diff --git a/.rustfmt.toml b/.rustfmt.toml
index 40eb028..e810e47 100644
--- a/.rustfmt.toml
+++ b/.rustfmt.toml
@@ -1,5 +1,5 @@
 format_strings = true
 wrap_comments = true
-format_doc_comments = true
+format_code_in_doc_comments = true
 merge_imports = false
 max_width = 120
diff --git a/Cargo.lock b/Cargo.lock
index 024404f..863d691 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -23,10 +23,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "arrayvec"
-version = "0.4.11"
+version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nodrop 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -34,13 +34,13 @@ name = "atty"
 version = "0.2.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "autocfg"
-version = "0.1.6"
+version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -49,7 +49,7 @@ version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "safemem 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "safemem 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -81,13 +81,13 @@ dependencies = [
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "secp256k1 0.12.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "strason 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "bitcoin"
-version = "0.18.0"
+version = "0.18.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitcoin-bech32 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -96,8 +96,8 @@ dependencies = [
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "secp256k1 0.12.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_test 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_test 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -105,7 +105,7 @@ name = "bitcoin-amount"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -130,12 +130,12 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "bitflags"
-version = "1.1.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -153,22 +153,22 @@ version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "chrono 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "chrono 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hostname 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "md5 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "try_from 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "bstr"
-version = "0.2.7"
+version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -195,8 +195,8 @@ version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "either 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -206,15 +206,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cfg-if"
-version = "0.1.9"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "chrono"
-version = "0.4.7"
+version = "0.4.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -225,7 +225,7 @@ name = "cloudabi"
 version = "0.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -233,19 +233,19 @@ name = "config"
 version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "nom 4.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rust-ini 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde-hjson 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "yaml-rust 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "constant_time_eq"
-version = "0.1.3"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -257,16 +257,16 @@ dependencies = [
  "bitcoin_hashes 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "config 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.12.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.12.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-http-server 11.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "mongodb 0.3.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "ocean-rpc 0.3.0 (git+https://github.com/commerceblock/rust-ocean-rpc)",
  "rust-ocean 0.6.0 (git+https://github.com/commerceblock/rust-ocean)",
  "secp256k1 0.12.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -283,10 +283,10 @@ name = "crossbeam-epoch"
 version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "arrayvec 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "arrayvec 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memoffset 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -304,8 +304,8 @@ name = "crossbeam-utils"
 version = "0.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -313,7 +313,7 @@ name = "crypto-mac"
 version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "constant_time_eq 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "generic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -332,7 +332,7 @@ dependencies = [
 
 [[package]]
 name = "either"
-version = "1.5.2"
+version = "1.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -341,9 +341,9 @@ version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "humantime 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "humantime 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "termcolor 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -367,7 +367,7 @@ name = "fuchsia-zircon"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -378,7 +378,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures"
-version = "0.1.28"
+version = "0.1.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -386,7 +386,7 @@ name = "futures-cpupool"
 version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -395,7 +395,7 @@ name = "generic-array"
 version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "typenum 1.11.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -404,10 +404,10 @@ version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "bstr 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bstr 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -418,9 +418,9 @@ dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "http 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "http 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "string 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -446,13 +446,13 @@ name = "hostname"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "winutil 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "http"
-version = "0.1.18"
+version = "0.1.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -466,8 +466,8 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "http 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "http 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-buf 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -478,7 +478,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "humantime"
-version = "1.2.0"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -504,17 +504,17 @@ dependencies = [
 
 [[package]]
 name = "hyper"
-version = "0.12.33"
+version = "0.12.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-cpupool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "h2 0.1.26 (registry+https://github.com/rust-lang/crates.io-index)",
- "http 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "http 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "http-body 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -524,9 +524,9 @@ dependencies = [
  "tokio-buf 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-executor 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-reactor 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-reactor 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-tcp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-threadpool 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-threadpool 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-timer 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "want 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -543,16 +543,18 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.0.2"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "iovec"
-version = "0.1.2"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -566,9 +568,9 @@ version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "hyper 0.10.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -576,11 +578,11 @@ name = "jsonrpc-core"
 version = "11.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -588,12 +590,12 @@ name = "jsonrpc-http-server"
 version = "11.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "hyper 0.12.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.12.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 11.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-server-utils 11.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicase 2.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicase 2.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -604,12 +606,12 @@ dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "globset 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 11.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicase 2.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicase 2.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -633,12 +635,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "lazy_static"
-version = "1.3.0"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.62"
+version = "0.2.65"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -657,11 +659,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "lock_api"
-version = "0.1.5"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "owning_ref 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -677,7 +678,7 @@ name = "log"
 version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -728,9 +729,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -743,8 +744,8 @@ name = "mio-uds"
 version = "0.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.19 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -764,11 +765,11 @@ name = "mongodb"
 version = "0.3.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bson 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bufstream 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "chrono 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "chrono 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "data-encoding 2.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hmac 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -788,14 +789,14 @@ name = "net2"
 version = "0.2.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "nodrop"
-version = "0.1.13"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -809,12 +810,13 @@ dependencies = [
 
 [[package]]
 name = "num-bigint"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
+ "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -822,7 +824,7 @@ name = "num-integer"
 version = "0.1.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -839,7 +841,7 @@ name = "num-traits"
 version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -847,71 +849,66 @@ name = "num_cpus"
 version = "1.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "ocean-rpc"
 version = "0.3.0"
-source = "git+https://github.com/commerceblock/rust-ocean-rpc#6bcbbca65bdf44d6567072f38310e8ac8f69e144"
+source = "git+https://github.com/commerceblock/rust-ocean-rpc#a8ffb9e94751a608eeb8c5d8a4e082266658184f"
 dependencies = [
- "bitcoin 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitcoin 0.18.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitcoin-amount 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitcoin_hashes 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-bigint 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-bigint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ocean-rpc-json 0.3.0 (git+https://github.com/commerceblock/rust-ocean-rpc)",
  "rust-ocean 0.6.0 (git+https://github.com/commerceblock/rust-ocean)",
  "secp256k1 0.12.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "ocean-rpc-json"
 version = "0.3.0"
-source = "git+https://github.com/commerceblock/rust-ocean-rpc#6bcbbca65bdf44d6567072f38310e8ac8f69e144"
+source = "git+https://github.com/commerceblock/rust-ocean-rpc#a8ffb9e94751a608eeb8c5d8a4e082266658184f"
 dependencies = [
- "bitcoin 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitcoin 0.18.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitcoin-amount 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitcoin_hashes 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-bigint 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-bigint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "secp256k1 0.12.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "owning_ref"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "parking_lot"
-version = "0.7.1"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lock_api 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "parking_lot_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lock_api 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot_core 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "parking_lot_core"
-version = "0.4.0"
+version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -921,7 +918,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "base64 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "constant_time_eq 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "crypto-mac 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "generic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hmac 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -936,7 +933,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.1"
+version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -952,7 +949,7 @@ name = "quote"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -960,7 +957,7 @@ name = "rand"
 version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -970,10 +967,10 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -983,9 +980,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -993,8 +990,8 @@ name = "rand"
 version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_hc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1003,7 +1000,7 @@ dependencies = [
  "rand_os 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_pcg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_xorshift 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1011,7 +1008,7 @@ name = "rand_chacha"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1049,9 +1046,9 @@ name = "rand_jitter"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1061,10 +1058,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1072,7 +1069,7 @@ name = "rand_pcg"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1111,12 +1108,12 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.2.1"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1130,7 +1127,7 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.11"
+version = "0.6.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1144,7 +1141,7 @@ version = "0.6.0"
 source = "git+https://github.com/commerceblock/rust-ocean#b3728b67611c52f1bd408e588cf396562ffb4c7a"
 dependencies = [
  "bech32 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "bitcoin 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitcoin 0.18.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitcoin_hashes 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "secp256k1 0.12.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1159,12 +1156,12 @@ dependencies = [
 
 [[package]]
 name = "ryu"
-version = "1.0.0"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "safemem"
-version = "0.3.2"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1175,11 +1172,6 @@ dependencies = [
  "regex 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "scopeguard"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "scopeguard"
 version = "1.0.0"
@@ -1192,7 +1184,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.26 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1228,10 +1220,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde"
-version = "1.0.99"
+version = "1.0.101"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde_derive 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1242,29 +1234,29 @@ dependencies = [
  "lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "linked-hash-map 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.23 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.99"
+version = "1.0.101"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.40"
+version = "1.0.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "ryu 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ryu 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1277,10 +1269,10 @@ dependencies = [
 
 [[package]]
 name = "serde_test"
-version = "1.0.99"
+version = "1.0.101"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1315,17 +1307,12 @@ name = "smallvec"
 version = "0.6.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "stable_deref_trait"
-version = "1.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "strason"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1338,10 +1325,10 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.3"
+version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1361,10 +1348,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "chrono 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "chrono 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1372,7 +1359,7 @@ name = "thread_local"
 version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1380,9 +1367,9 @@ name = "time"
 version = "0.1.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1391,7 +1378,7 @@ version = "0.1.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1399,12 +1386,12 @@ dependencies = [
  "tokio-executor 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-fs 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-reactor 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-sync 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-reactor 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-sync 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-tcp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-threadpool 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-threadpool 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-timer 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-udp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-udp 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-uds 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1414,8 +1401,8 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "either 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1424,7 +1411,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1433,7 +1420,7 @@ name = "tokio-current-thread"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-executor 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1443,7 +1430,7 @@ version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1451,9 +1438,9 @@ name = "tokio-fs"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-threadpool 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-threadpool 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1462,35 +1449,35 @@ version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "tokio-reactor"
-version = "0.1.9"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-executor 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-sync 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-sync 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "tokio-sync"
-version = "0.1.6"
+version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1499,25 +1486,25 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-reactor 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-reactor 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "tokio-threadpool"
-version = "0.1.15"
+version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-deque 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-queue 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-executor 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1528,23 +1515,23 @@ version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-executor 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "tokio-udp"
-version = "0.1.3"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-reactor 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-reactor 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1553,15 +1540,15 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-uds 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-reactor 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-reactor 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1569,7 +1556,7 @@ name = "toml"
 version = "0.4.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1594,7 +1581,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "typenum"
-version = "1.10.0"
+version = "1.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1612,7 +1599,7 @@ dependencies = [
 
 [[package]]
 name = "unicase"
-version = "2.4.0"
+version = "2.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1664,7 +1651,7 @@ name = "want"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
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 dependencies = [
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
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 "checksum num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)" = "b85e541ef8255f6cf42bbfe4ef361305c6c135d10919ecc26126c4e5ae94bc09"
 "checksum num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)" = "92e5113e9fd4cc14ded8e499429f396a20f98c772a47cc8622a736e1ec843c31"
 "checksum num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "6ba9a427cfca2be13aa6f6403b0b7e7368fe982bfa16fccc450ce74c46cd9b32"
 "checksum num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bcef43580c035376c0705c42792c294b66974abbfd2789b511784023f71f3273"
 "checksum ocean-rpc 0.3.0 (git+https://github.com/commerceblock/rust-ocean-rpc)" = "<none>"
 "checksum ocean-rpc-json 0.3.0 (git+https://github.com/commerceblock/rust-ocean-rpc)" = "<none>"
-"checksum owning_ref 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "49a4b8ea2179e6a2e27411d3bca09ca6dd630821cf6894c6c7c8467a8ee7ef13"
-"checksum parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ab41b4aed082705d1056416ae4468b6ea99d52599ecf3169b00088d43113e337"
-"checksum parking_lot_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "94c8c7923936b28d546dfd14d4472eaf34c99b14e1c973a32b3e6d4eb04298c9"
+"checksum parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f842b1982eb6c2fe34036a4fbfb06dd185a3f5c8edfaacdf7d1ea10b07de6252"
+"checksum parking_lot_core 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b876b1b9e7ac6e1a74a6da34d25c42e17e8862aa409cbbbdcfc8d86c6f3bc62b"
 "checksum pbkdf2 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0c09cddfbfc98de7f76931acf44460972edb4023eb14d0c6d4018800e552d8e0"
 "checksum percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
-"checksum proc-macro2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4c5c2380ae88876faae57698be9e9775e3544decad214599c3a6266cca6ac802"
+"checksum proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "9c9e470a8dc4aeae2dee2f335e8f533e2d4b347e1434e5671afc49b054592f27"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
 "checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
 "checksum rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)" = "64ac302d8f83c0c1974bf758f6b041c6c8ada916fbb44a609158ca8b064cc76c"
@@ -1861,16 +1847,15 @@ dependencies = [
 "checksum rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "678054eb77286b51581ba43620cc911abf02758c91f93f479767aed0f90458b2"
 "checksum redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)" = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
 "checksum regex 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9329abc99e39129fcceabd24cf5d85b4671ef7c29c50e972bc5afe32438ec384"
-"checksum regex 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "88c3d9193984285d544df4a30c23a4e62ead42edf70a4452ceb76dac1ce05c26"
+"checksum regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dc220bd33bdce8f093101afe22a037b8eb0e5af33592e6a9caafff0d4cb81cbd"
 "checksum regex-syntax 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "7d707a4fa2637f2dca2ef9fd02225ec7661fe01a53623c1e6515b6916511f7a7"
-"checksum regex-syntax 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)" = "b143cceb2ca5e56d5671988ef8b15615733e7ee16cd348e064333b251b89343f"
+"checksum regex-syntax 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "11a7e20d1cce64ef2fed88b66d347f88bd9babb82845b2b858f3edbf59a4f716"
 "checksum rust-ini 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3e52c148ef37f8c375d49d5a73aa70713125b7f19095948a923f80afdeb22ec2"
 "checksum rust-ocean 0.6.0 (git+https://github.com/commerceblock/rust-ocean)" = "<none>"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
-"checksum ryu 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c92464b447c0ee8c4fb3824ecc8383b81717b9f1e74ba2e72540aef7b9f82997"
-"checksum safemem 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d2b08423011dae9a5ca23f07cf57dac3857f5c885d352b76f6d95f4aea9434d0"
+"checksum ryu 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "bfa8506c1de11c9c4e4c38863ccbe02a305c8188e85a05a784c9e11e1c3910c8"
+"checksum safemem 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ef703b7cb59335eae2eb93ceb664c0eb7ea6bf567079d843e09420219668e072"
 "checksum scan_fmt 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8b87497427f9fbe539ee6b9626f5a5e899331fdf1c1d62f14c637a462969db30"
-"checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
 "checksum scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b42e15e59b18a828bbf5c58ea01debb36b9b096346de35d941dcb89009f24a0d"
 "checksum secp256k1 0.12.2 (registry+https://github.com/rust-lang/crates.io-index)" = "bfaccd3a23619349e0878d9a241f34b1982343cdf67367058cd7d078d326b63e"
 "checksum semver 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bee2bc909ab2d8d60dab26e8cad85b25d795b14603a0dcb627b78b9d30b6454b"
@@ -1878,20 +1863,19 @@ dependencies = [
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum separator 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7acc4d818f952ed02e7911df5da8098c8b00a3c5ba2832e035a750b56e8fc32b"
 "checksum serde 0.8.23 (registry+https://github.com/rust-lang/crates.io-index)" = "9dad3f759919b92c3068c696c15c3d17238234498bbdcc80f2c469606f948ac8"
-"checksum serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)" = "fec2851eb56d010dc9a21b89ca53ee75e6528bab60c11e89d38390904982da9f"
+"checksum serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)" = "9796c9b7ba2ffe7a9ce53c2287dfc48080f4b2b362fcc245a259b3a7201119dd"
 "checksum serde-hjson 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0b833c5ad67d52ced5f5938b2980f32a9c1c5ef047f0b4fb3127e7a423c76153"
-"checksum serde_derive 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)" = "cb4dc18c61206b08dc98216c98faa0232f4337e1e1b8574551d5bad29ea1b425"
-"checksum serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)" = "051c49229f282f7c6f3813f8286cc1e3323e8051823fce42c7ea80fe13521704"
+"checksum serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)" = "4b133a43a1ecd55d4086bd5b4dc6c1751c68b1bfbeba7a5040442022c7e7c02e"
+"checksum serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)" = "2f72eb2a68a7dc3f9a691bfda9305a1c017a6215e5a4545c258500d2099a37c2"
 "checksum serde_test 0.8.23 (registry+https://github.com/rust-lang/crates.io-index)" = "110b3dbdf8607ec493c22d5d947753282f3bae73c0f56d322af1e8c78e4c23d5"
-"checksum serde_test 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)" = "f2d8999326d1f713002c52199b3f30c052dc8998d9359d5ae950328e527da1cd"
+"checksum serde_test 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)" = "4aaf891d32257c9f65259b841af6e0b35d2ee22e41f1becbead01f0217f3e000"
 "checksum sha-1 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "51b9d1f3b5de8a167ab06834a7c883bd197f2191e1dda1a22d9ccfeedbf9aded"
 "checksum sha2 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9eb6be24e4c23a84d7184280d2722f7f2731fcdd4a9d886efbfe4413e4847ea0"
 "checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 "checksum smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ab606a9c5e214920bb66c458cd7be8ef094f813f20fe77a54cc7dbfff220d4b7"
-"checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum strason 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "dcd1098ae32c583b8d538072380c340a01e46fbca379d6248ff77721373e2cef"
 "checksum string 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d24114bfcceb867ca7f71a0d3fe45d45619ec47a6fbfa98cb14e14250bfa5d6d"
-"checksum syn 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "158521e6f544e7e3dcfc370ac180794aa38cb34a1b1e07609376d4adcf429b93"
+"checksum syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf"
 "checksum termcolor 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "96d6098003bde162e4277c70665bd87c326f5a0c3f3fbfb285787fa482d54e6e"
 "checksum textnonce 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "dafb35214e317d6c0a72b16d1aa667bbc0fea57e302798e7bc520e0f39988006"
 "checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
@@ -1903,22 +1887,22 @@ dependencies = [
 "checksum tokio-executor 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "0f27ee0e6db01c5f0b2973824547ce7e637b2ed79b891a9677b0de9bd532b6ac"
 "checksum tokio-fs 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "3fe6dc22b08d6993916647d108a1a7d15b9cd29c4f4496c62b92c45b5041b7af"
 "checksum tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "5090db468dad16e1a7a54c8c67280c5e4b544f3d3e018f0b913b400261f85926"
-"checksum tokio-reactor 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "6af16bfac7e112bea8b0442542161bfc41cbfa4466b580bdda7d18cb88b911ce"
-"checksum tokio-sync 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2162248ff317e2bc713b261f242b69dbb838b85248ed20bb21df56d60ea4cae7"
+"checksum tokio-reactor 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "c56391be9805bc80163151c0b9e5164ee64f4b0200962c346fea12773158f22d"
+"checksum tokio-sync 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "d06554cce1ae4a50f42fba8023918afa931413aded705b560e29600ccf7c6d76"
 "checksum tokio-tcp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "1d14b10654be682ac43efee27401d792507e30fd8d26389e1da3b185de2e4119"
-"checksum tokio-threadpool 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)" = "90ca01319dea1e376a001e8dc192d42ebde6dd532532a5bad988ac37db365b19"
+"checksum tokio-threadpool 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "2bd2c6a3885302581f4401c82af70d792bb9df1700e7437b0aeb4ada94d5388c"
 "checksum tokio-timer 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "f2106812d500ed25a4f38235b9cae8f78a09edf43203e16e59c3b769a342a60e"
-"checksum tokio-udp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "66268575b80f4a4a710ef83d087fdfeeabdce9b74c797535fbac18a2cb906e92"
+"checksum tokio-udp 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f02298505547f73e60f568359ef0d016d5acd6e830ab9bc7c4a5b3403440121b"
 "checksum tokio-uds 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "037ffc3ba0e12a0ab4aca92e5234e0dedeb48fddf6ccd260f1f150a36a9f2445"
 "checksum toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "758664fc71a3a69038656bee8b6be6477d2a6c315a6b81f7081f591bffa4111f"
 "checksum traitobject 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "efd1f82c56340fdf16f2a953d7bda4f8fdffba13d93b00844c25572110b26079"
 "checksum try-lock 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e604eb7b43c06650e854be16a2a03155743d3752dd1c943f6829e26b7a36e382"
 "checksum try_from 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "923a7ee3e97dbfe8685261beb4511cc9620a1252405d02693d43169729570111"
 "checksum typeable 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1410f6f91f21d1612654e7cc69193b0334f909dcf2c790c4826254fbb86f8887"
-"checksum typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "612d636f949607bdf9b123b4a6f6d966dedf3ff669f7f045890d3a4a73948169"
+"checksum typenum 1.11.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6d2783fe2d6b8c1101136184eb41be8b1ad379e4657050b8aaff0c79ee7575f9"
 "checksum ucd-util 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "fa9b3b49edd3468c0e6565d85783f51af95212b6fa3986a5500954f00b460874"
 "checksum unicase 1.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7f4765f83163b74f957c797ad9253caf97f103fb064d3999aea9568d09fc8a33"
-"checksum unicase 2.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a84e5511b2a947f3ae965dcb29b13b7b1691b6e7332cf5dbc1744138d5acb7f6"
+"checksum unicase 2.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2e2e6bd1e59e56598518beb94fd6db628ded570326f0a98c679a304bd9f00150"
 "checksum unicode-bidi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "49f2bd0c6468a8230e1db229cff8029217cf623c767ea5d60bfbd42729ea54d5"
 "checksum unicode-normalization 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "141339a08b982d942be2ca06ff8b076563cbe223d1befd5450716790d44e2426"
 "checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
@@ -1927,7 +1911,7 @@ dependencies = [
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 "checksum want 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b6395efa4784b027708f7451087e647ec73cc74f5d9bc2e418404248d679a230"
 "checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
-"checksum winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "f10e386af2b13e47c89e7236a7a14a086791a2b88ebad6df9bf42040195cf770"
+"checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
 "checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 "checksum winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7168bab6e1daee33b4557efd0e95d5ca70a03706d39fa5f3fe7a236f584b03c9"
diff --git a/config/default.toml b/config/default.toml
index 0ab1349..719d1b1 100644
--- a/config/default.toml
+++ b/config/default.toml
@@ -27,7 +27,6 @@ pass = "password1"
 host = "127.0.0.1:5555"
 user = "user1"
 pass = "password1"
-asset_hash = "93fed59e9407ddc47993fc176a245383eb2a5c06c265ce0e02ff2b59da44f439"
 genesis_hash = "ff8950160a77988cdc485913568d06c2d69a8c952ef0f179b4b097e3de63d7cc"
 asset = "CHALLENGE"
 asset_key = "cScSHCQp9AEwzZoucRpX9bMRkLCJ4LoQWBNFTZuD6tPX9qwNMWfQ"
diff --git a/docker-compose.yml b/docker-compose.yml
index 0f8c919..8a0886c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -44,7 +44,6 @@ services:
       CO_CLIENTCHAIN_HOST: client_chain:5555
       CO_CLIENTCHAIN_USER: user1
       CO_CLIENTCHAIN_PASS: password1
-      CO_CLIENTCHAIN_ASSET_HASH: fae9f771019d45e31b8f78da99a15b094b17b2ba76b0940c3ac53d5e9afd8e8e
       CO_CLIENTCHAIN_GENESIS_HASH: d1fbd07bd9a7a80a85445b8e28246f0b644c01ac7412e81ce3ffc0815386ad77
       CO_CLIENTCHAIN_ASSET_KEY: cScSHCQp9AEwzZoucRpX9bMRkLCJ4LoQWBNFTZuD6tPX9qwNMWfQ
 
@@ -59,4 +58,4 @@ networks:
    driver: bridge
    ipam:
      config:
-     - subnet: 192.168.12.0/24
\ No newline at end of file
+     - subnet: 192.168.12.0/24
diff --git a/examples/demo.rs b/examples/demo.rs
index 7d233ac..e941f2b 100644
--- a/examples/demo.rs
+++ b/examples/demo.rs
@@ -22,6 +22,7 @@ use hyper::{
 use ocean_rpc::RpcApi;
 use secp256k1::{Message, Secp256k1, SecretKey};
 
+use coordinator::clientchain::get_first_unspent;
 use coordinator::coordinator as coordinator_main;
 use coordinator::ocean::OceanClient;
 
@@ -50,32 +51,35 @@ fn main() {
     // auto client chain block generation
     let client_rpc_clone = client_rpc.clone();
     thread::spawn(move || loop {
-        thread::sleep(time::Duration::from_secs(10));
+        thread::sleep(time::Duration::from_secs(5));
         if let Err(e) = client_rpc_clone.clone().client.generate(1) {
             error!("{}", e);
         }
     });
 
     let genesis_hash = sha256d::Hash::from_hex(&config.clientchain.genesis_hash).unwrap();
-    let request_txid = &client_rpc.get_requests(Some(&genesis_hash)).unwrap()[0].txid;
+    let request = &client_rpc.get_requests(Some(&genesis_hash));
+    if request.as_ref().unwrap().is_empty() {
+        panic!("No active request in client blockchain!")
+    }
+    let request_txid = request.as_ref().unwrap()[0].txid;
     let guardnode_pubkey = "026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3";
     let mut guardnode_txid = genesis_hash; // dummy init
-    for bid in client_rpc.get_request_bids(request_txid).unwrap().unwrap().bids {
+    for bid in client_rpc.get_request_bids(&request_txid).unwrap().unwrap().bids {
         if bid.fee_pub_key.to_string() == guardnode_pubkey {
             guardnode_txid = bid.txid;
+            println!("guardnode bid txid: {}", guardnode_txid);
             break;
         }
     }
 
     // add two guardnodes with valid keys and one without
     // keys based on mockservice request bids
-    let asset_hash = config.clientchain.asset_hash.clone();
     let listener_host = config.listener_host.clone();
     let client_rpc_clone = client_rpc.clone();
     thread::spawn(move || {
         guardnode(
             &client_rpc_clone,
-            sha256d::Hash::from_hex(&asset_hash).unwrap(),
             listener_host.clone(),
             guardnode_txid,
             SecretKey::from_slice(&[0xaa; 32]).unwrap(),
@@ -92,7 +96,6 @@ fn main() {
 /// Bid info (key/txid) are based on MockService data for demo purpose
 fn guardnode(
     client_rpc: &OceanClient,
-    asset_hash: sha256d::Hash,
     listener_host: String,
     guard_txid: sha256d::Hash,
     guard_key: SecretKey,
@@ -100,6 +103,13 @@ fn guardnode(
 ) {
     let secp = Secp256k1::new();
     let mut prev_block_count = 0;
+    // Get asset hash from unspent list
+    let asset_hash;
+    match get_first_unspent(&client_rpc, &String::from("CHALLENGE")) {
+        Err(_) => panic!("No challenge asset issued in client blockchain!"),
+        Ok(res) => asset_hash = res.asset,
+    }
+
     loop {
         if let Ok(block_count) = client_rpc.get_block_count() {
             if block_count > prev_block_count {
diff --git a/scripts/authproxy.py b/scripts/authproxy.py
old mode 100644
new mode 100755
diff --git a/scripts/create_request.sh b/scripts/create_request.sh
new file mode 100755
index 0000000..72000b5
--- /dev/null
+++ b/scripts/create_request.sh
@@ -0,0 +1,155 @@
+#!/bin/bash
+shopt -s expand_aliases
+alias ocl="$HOME/jsonrpc-cli/jsonrpc-cli --user=$RPC_USER --pass=$RPC_PASS --format=jsonpretty --resultonly=on --highlight=off  http://$RPC_CONNECT:$RPC_PORT/"
+# parameters:
+# $1 Genesis hash
+# $2 start price
+# $3 end price
+# $4 auction duration
+# $5 request duration
+# $6 number of tickets
+# $7 fee percentage
+# $8 Permission asset private key
+# OPTIONAL
+# $9 prevtxid
+# $10 prevvout
+
+# Check parameters are set
+if [ -z $1 ] || [ -z $2 ] || [ -z $3 ] || [ -z $4 ] || [ -z $5 ] || [ -z $6 ] || [ -z $7 ]
+then
+    printf "%s\n" "createRequest genesisHash startPrice endPrice auctionDuration requestDuration numTickets feePercentage privKey ( txid ) ( vout )" \ \
+    "Script builds, signs and sends a request transaction to service chain." \
+    "Set shell enviroment variables RPC_CONNECT, RPC_PORT, RPC_USER, RPC_PASS with network connection information." \
+    "By deflault a TX_LOCKED_MULTISIG transaction or standard permission asset unspent output is spent to fund the request. If a specific permission asset transaction should be used then set parameters 9 and 10 accordingly." \
+    \ \
+    "Arguments:" \
+    "1. \"Genesis hash\"        (Hex string, Required) Hash of client chain genesis block" \
+    "2. \"StartPrice\"          (Amount, Required) Starting auction price of tickets" \
+    "3. \"endPrice\"            (Amount, Required) Ending auction price of tickets" \
+    "4. \"auctionDuration\"     (Integer, Required) Number of blocks auction to last for" \
+    "5. \"requestDuration\"     (Integer, Required) Number of blocks service period to last for" \
+    "6. \"numTickets\"          (Integer, Required) Number of tickets to be sold" \
+    "7. \"feePercentage\"       (Integer, Required) Percentage of fee to go towards rewarding guardnodes" \
+    "8. \"privKey\"             (String (hex), Optional) Hex encoded private key of address with permission asset" \
+    "9. \"txid\"                (String (hex), Optional) Specified previous request transaction ID to fund new request" \
+    "10. \"vout\"                (Integer, Optional) Specified previous request vout to fund new request"
+    \ \
+    "Result: " \
+    "\"txid\"                    (hex string) Transaction ID of request transaction"
+    exit
+fi
+
+# check start price > end price
+if [ $2 -lt $3 ]; then
+    printf "Input parameter error: Start price must be larger than end price."
+    exit
+fi
+# Client chain genesis block hash
+genesis=$1
+# check for currently active request for given genesis hash
+if [[ `ocl getrequests | jq "if .[].genesisBlock == \"$genesis\" then 1 else 0 end"` == *"1"* ]]; then
+    printf "Input parameter error: Genesis hash already in active request list. Relevant request info below.\n\n"
+    echo "Current block height: " `ocl getblockcount`
+    ocl getrequests $1 | jq '.[]'
+    exit
+fi
+
+# Request start height = current height + auction duration
+currentblockheight=`ocl getblockchaininfo | jq ".blocks"`
+let start=$currentblockheight+$5
+# Request end height = request start height + request duration
+let end=start+$4
+
+# Starting price
+price=$2
+# Decay constant formula
+decay=$(echo "$4^3/((1+$4)*(($2/$3)-1))" | bc)
+# Number of tickets
+tickets=$6
+# Fee percentage paid
+fee=$7
+
+unspent=`ocl listunspent '[1, 9999999, [], true, "PERMISSION"]' | jq -c '.[]'`
+# Import private key. Check if list unspent is empty first to avoid unnessesary re-scanning every time script runs
+if [ ! -z $8 ] && [[ -z $unspent ]]; then
+        echo "Importing private key..."
+        ocl importprivkey $8 > /dev/null
+        unspent=`ocl listunspent '[1, 9999999, [], true, "PERMISSION"]' | jq -c '.[]'`
+fi
+
+checkLockTime () {
+    if [[ $currentblockheight -gt `echo $1 | jq -r '.locktime'` ]]; then
+        return 0
+    fi
+    return 1
+}
+# Check for specified previous request transaction info and set txid, vout variables accordingly
+if [ -n "$9" ] || [ -n "${10}" ]; then
+    if [ -z $9 ] || [ -z ${10} ]; then
+        printf "Input parameter error: txid and vout must be provided for previous request transaction.\n"
+        exit
+    fi
+    txid=$9
+    vout=$10
+    tx=`ocl decoderawtransaction $(ocl getrawtransaction $txid)`
+    if checkLockTime "$tx"; then
+        value=`echo $tx | jq -r '.vout[0].value'`
+    else
+        printf "Input parameter error: Previous request transaction nlocktime not met.\n"
+        exit
+    fi
+else
+    # Get previously locked TX_LOCKED_MULTISIG unspent output
+    for i in $unspent;
+    do
+        if [ `echo $i | jq ".solvable"` = "false" ]; then
+            txid=`echo $i | jq -r ".txid"`
+            tx=`ocl decoderawtransaction $(ocl getrawtransaction $txid | jq -r '.')`
+            if checkLockTime "$tx"; then
+                value=`echo $tx | jq -r '.vout[0].value'` # TX_LOCKED_MULTISIG permission
+                vout=0                                    # asset always vout=0
+                break
+            fi
+        fi
+    done
+    # If value not set yet then get standard permission asset unspent output
+    if [ -z $value ]; then
+        for i in $unspent;
+        do
+            txid=`echo $i | jq -r ".txid"`
+            tx=`ocl decoderawtransaction $(ocl getrawtransaction $txid | jq -r '.')`
+            if checkLockTime "$tx";
+            then
+                value=`echo $i | jq -r ".amount"`
+                vout=`echo $i | jq ".vout"`
+                break
+            fi
+        done
+    fi
+    if [[ ${#unspent[0]} = 4 || -z $txid ]]; then # unspent or txid is null
+        printf "Error: No unspent TX_LOCKED_MULTISIG or permission asset transaction outputs available in wallet.\n"
+        exit
+    fi
+fi
+# Address permission tokens will be locked in
+pub=`ocl validateaddress $(ocl getnewaddress | jq -r '.') | jq -r ".pubkey"`
+
+# Generate and sign request transaction
+inputs="{\"txid\":\"$txid\",\"vout\":$vout}"
+outputs="{\"decayConst\":$decay,\"endBlockHeight\":$end,\"fee\":$fee,\"genesisBlockHash\":\"$genesis\",\
+\"startBlockHeight\":$start,\"tickets\":$tickets,\"startPrice\":$price,\"value\":$value,\"pubkey\":\"$pub\"}"
+
+rawtx=`ocl createrawrequesttx '['$(echo $inputs)','$(echo $outputs)']' | jq -r '.'`
+signedrawtx=`ocl signrawtransaction $rawtx`
+
+# Catch signing error
+if [ `echo $signedrawtx | jq ".complete"` = "false" ]; then
+    echo "Signing error: Script cannot be signed. Is the input transaction information correct and is it unlockable now?"
+fi
+
+txid=`ocl sendrawtransaction $(echo $signedrawtx | jq -r ".hex") | jq -r '.'`
+echo "Request txid: $txid"
+
+# Import spending address to allow script to automatically update request
+address=`ocl decoderawtransaction $(echo $signedrawtx | jq -r '.hex') | jq -r '.vout[0].scriptPubKey.hex'`
+ocl importaddress $address > /dev/null
diff --git a/scripts/demo.sh b/scripts/demo.sh
index 6e91f5d..525b3e7 100755
--- a/scripts/demo.sh
+++ b/scripts/demo.sh
@@ -25,21 +25,12 @@ printf '%s\n' '#!/bin/sh' 'rpcuser=user1' \
     'challengecoinsdestination=76a914be70510653867b1c648b43cfb3b0edf8420f08d788ac' > ~/co-client-dir/ocean.conf
 
 ocd
-sleep 5
+sleep 8
 
 echo "Importing challenger key"
 ocl importprivkey cScSHCQp9AEwzZoucRpX9bMRkLCJ4LoQWBNFTZuD6tPX9qwNMWfQ
 sleep 2
 
-# Issue asset for bid creation
-echo "Issue asset for guardnodes"
-asset=`ocl issueasset 500 0`
-asset_hash=`echo $asset | jq -r ".asset"`
-
-echo "Issue another asset for guardnodes"
-asset=`ocl issueasset 100 0`
-asset_hash2=`echo $asset | jq -r ".asset"`
-
 # Create request
 echo "Create request"
 pub=`ocl validateaddress $(ocl getnewaddress) | jq -r ".pubkey"`
@@ -52,22 +43,35 @@ outputs="{\"decayConst\":1000,\"endBlockHeight\":10,\"fee\":3,\"genesisBlockHash
 \"startBlockHeight\":5,\"tickets\":2,\"startPrice\":50,\"value\":$value,\"pubkey\":\"$pub\"}"
 
 signedtx=`ocl signrawtransaction $(ocl createrawrequesttx $inputs $outputs)`
-txid=`ocl sendrawtransaction $(echo $signedtx | jq -r ".hex")`
+request_txid=`ocl sendrawtransaction $(echo $signedtx | jq -r ".hex")`
 
 ocl generate 1
 ocl getrequests
 
 # Create bid
 echo "Create request bid"
+
+# Create tx for bid to spend from
+bid_txid=$(ocl sendtoaddress `ocl getnewaddress` 100 "" "" false "CBT")
+ocl generate 1
+
 addr=`ocl getnewaddress`
 pub=`ocl validateaddress $addr | jq -r ".pubkey"`
-unspent=`ocl listunspent 1 9999999 [] true $asset_hash | jq .[0]`
-value=`echo $unspent | jq -r ".amount"`
-
-inputs="[{\"txid\":$(echo $unspent | jq ".txid"),\"vout\":$(echo $unspent | jq -r ".vout"),\"asset\":\"$asset_hash\"}]"
-outputs="{\"endBlockHeight\":10,\"requestTxid\":\"$txid\",\"pubkey\":\"$pub\",\
+bid_tx=$(ocl decoderawtransaction `ocl getrawtransaction $bid_txid`)
+value=$(echo $bid_tx | jq '.vout[0].value')
+if [ $value = 100 ]   # Find correct vout
+then
+  vout=$(echo $bid_tx | jq '.vout[0].n')
+else
+  vout=$(echo $bid_tx | jq '.vout[1].n')
+fi
+domain_asset=$(echo $bid_tx | jq '.vout['$vout'].asset')
+
+
+inputs="[{\"txid\":\"$bid_txid\",\"vout\":$vout,\"asset\":$domain_asset}]"
+outputs="{\"endBlockHeight\":10,\"requestTxid\":\"$request_txid\",\"pubkey\":\"$pub\",\
 \"feePubkey\":\"026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3\",\
-\"value\":50,\"change\":449.999,\"changeAddress\":\"$addr\",\"fee\":0.001}"
+\"value\":55,\"change\":\"44.999\",\"changeAddress\":\"$addr\",\"fee\":0.001}"
 
 signedtx=`ocl signrawtransaction $(ocl createrawbidtx $inputs $outputs)`
 txid=`ocl sendrawtransaction $(echo $signedtx | jq -r ".hex")`
@@ -78,19 +82,32 @@ ocl importprivkey cPjJhtAgmbkovqCd1BgnY2nxGftX2tqen6UzaMxvFeH8xT3PWUod
 sleep 2
 
 echo "Create another request bid"
+# Create tx for bid to spend from
+bid_txid2=$(ocl sendtoaddress `ocl getnewaddress` 100 "" "" false "CBT")
+ocl generate 1
+
 addr=`ocl getnewaddress`
 pub=`ocl validateaddress $addr | jq -r ".pubkey"`
-unspent=`ocl listunspent 1 9999999 [] true $asset_hash2 | jq .[0]`
-value=`echo $unspent | jq -r ".amount"`
-
-inputs="[{\"txid\":$(echo $unspent | jq ".txid"),\"vout\":$(echo $unspent | jq -r ".vout"),\"asset\":\"$asset_hash2\"}]"
-outputs="{\"endBlockHeight\":10,\"requestTxid\":\"$txid\",\"pubkey\":\"$pub\",\
-\"feePubkey\":\"029aaa76fcf7b8012041c6b4375ad476408344d842000087aa93c5a33f65d50d92\",\
-\"value\":50,\"change\":49.999,\"changeAddress\":\"$addr\",\"fee\":0.001}"
+bid_tx=$(ocl decoderawtransaction `ocl getrawtransaction $bid_txid2`)
+value=$(echo $bid_tx | jq '.vout[0].value')
+if [ $value = 100 ]
+then
+  vout=$(echo $bid_tx | jq '.vout[0].n')
+else
+  vout=$(echo $bid_tx | jq '.vout[1].n')
+fi
+domain_asset=$(echo $bid_tx | jq '.vout['$vout'].asset')
+
+inputs="[{\"txid\":\"$bid_txid2\",\"vout\":$vout,\"asset\":$domain_asset}]"
+outputs="{\"endBlockHeight\":10,\"requestTxid\":\"$request_txid\",\"pubkey\":\"$pub\",\
+\"feePubkey\":\"026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3\",\
+\"value\":55,\"change\":\"44.999\",\"changeAddress\":\"$addr\",\"fee\":0.001}"
 
 signedtx=`ocl signrawtransaction $(ocl createrawbidtx $inputs $outputs)`
 txid=`ocl sendrawtransaction $(echo $signedtx | jq -r ".hex")`
 
+echo "mempool"
+ocl getrawmempool
 ocl generate 1
 ocl getrequestbids $(ocl getrequests | jq -r ".[].txid")
 echo "Guardnode txid: $txid"
diff --git a/scripts/query.js b/scripts/query.js
old mode 100644
new mode 100755
diff --git a/src/api.rs b/src/api.rs
index ec4a918..1b7581e 100644
--- a/src/api.rs
+++ b/src/api.rs
@@ -31,7 +31,7 @@ struct GetRequestResponse {
 }
 
 /// Get request RPC call returning corresponding request if it exists
-fn get_request(params: Params, storage: Arc<Storage>) -> futures::Finished<Value, Error> {
+fn get_request(params: Params, storage: Arc<dyn Storage>) -> futures::Finished<Value, Error> {
     let try_parse = params.parse::<GetRequestResponsesParams>();
     match try_parse {
         Ok(parse) => {
@@ -58,7 +58,7 @@ struct GetRequestsResponse {
 }
 
 /// Get requests RPC call returning all stored requests
-fn get_requests(storage: Arc<Storage>) -> futures::Finished<Value, Error> {
+fn get_requests(storage: Arc<dyn Storage>) -> futures::Finished<Value, Error> {
     let requests = storage.get_requests().unwrap();
     let mut response = GetRequestsResponse { requests: vec![] };
     for request in requests {
@@ -80,7 +80,7 @@ struct GetRequestResponsesResponse {
 
 /// Get requests responses RPC call returning all responses for a specific
 /// request transaction id hash
-fn get_request_responses(params: Params, storage: Arc<Storage>) -> futures::Finished<Value, Error> {
+fn get_request_responses(params: Params, storage: Arc<dyn Storage>) -> futures::Finished<Value, Error> {
     let try_parse = params.parse::<GetRequestResponsesParams>();
     match try_parse {
         Ok(parse) => {
@@ -159,42 +159,9 @@ pub fn run_api_server<D: Storage + Send + Sync + 'static>(
 mod tests {
     use super::*;
 
-    use std::str::FromStr;
-
-    use bitcoin_hashes::{hex::FromHex, Hash};
     use futures::Future;
-    use secp256k1::PublicKey;
-
-    use crate::challenger::ChallengeState;
-    use crate::request::Bid;
-    use crate::storage::MockStorage;
-
-    /// Generate dummy hash for tests
-    fn gen_dummy_hash(i: u8) -> sha256d::Hash {
-        sha256d::Hash::from_slice(&[i as u8; 32]).unwrap()
-    }
 
-    /// Geberate dummy challenge state
-    fn gen_challenge_state(request_hash: &sha256d::Hash) -> ChallengeState {
-        let request = ServiceRequest {
-            txid: *request_hash,
-            start_blockheight: 2,
-            end_blockheight: 5,
-            genesis_blockhash: gen_dummy_hash(0),
-            fee_percentage: 5,
-            num_tickets: 10,
-        };
-        let mut bids = BidSet::new();
-        let _ = bids.insert(Bid {
-            txid: sha256d::Hash::from_hex("1234567890000000000000000000000000000000000000000000000000000000").unwrap(),
-            pubkey: PublicKey::from_str("026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3").unwrap(),
-        });
-        ChallengeState {
-            request,
-            bids,
-            latest_challenge: Some(gen_dummy_hash(0)),
-        }
-    }
+    use crate::util::testing::{gen_challenge_state, gen_dummy_hash, MockStorage};
 
     #[test]
     fn get_request_test() {
@@ -217,8 +184,10 @@ mod tests {
         let params: Params = serde_json::from_str(&s).unwrap();
         let resp = get_request(params, storage.clone());
         assert_eq!(
-            format!(r#"{{"request":{{"txid":"{}","start_blockheight":2,"end_blockheight":5,"genesis_blockhash":"0000000000000000000000000000000000000000000000000000000000000000","fee_percentage":5,"num_tickets":10}},"bids":[{{"txid":"1234567890000000000000000000000000000000000000000000000000000000","pubkey":"026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3"}}]}}"#,
-                dummy_hash.to_string()),
+            format!(
+                r#"{{"request":{{"txid":"{}","start_blockheight":2,"end_blockheight":5,"genesis_blockhash":"0000000000000000000000000000000000000000000000000000000000000000","fee_percentage":5,"num_tickets":10}},"bids":[{{"txid":"1234567890000000000000000000000000000000000000000000000000000000","pubkey":"026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3"}}]}}"#,
+                dummy_hash.to_string()
+            ),
             resp.wait().unwrap()
         );
     }
@@ -237,8 +206,10 @@ mod tests {
         storage.save_challenge_state(&state).unwrap();
         let resp = get_requests(storage.clone());
         assert_eq!(
-            format!(r#"{{"requests":[{{"request":{{"txid":"{}","start_blockheight":2,"end_blockheight":5,"genesis_blockhash":"0000000000000000000000000000000000000000000000000000000000000000","fee_percentage":5,"num_tickets":10}},"bids":[{{"txid":"1234567890000000000000000000000000000000000000000000000000000000","pubkey":"026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3"}}]}}]}}"#,
-                dummy_hash.to_string()),
+            format!(
+                r#"{{"requests":[{{"request":{{"txid":"{}","start_blockheight":2,"end_blockheight":5,"genesis_blockhash":"0000000000000000000000000000000000000000000000000000000000000000","fee_percentage":5,"num_tickets":10}},"bids":[{{"txid":"1234567890000000000000000000000000000000000000000000000000000000","pubkey":"026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3"}}]}}]}}"#,
+                dummy_hash.to_string()
+            ),
             resp.wait().unwrap()
         );
 
@@ -247,9 +218,11 @@ mod tests {
         storage.save_challenge_state(&state2).unwrap();
         let resp = get_requests(storage.clone());
         assert_eq!(
-            format!(r#"{{"requests":[{{"request":{{"txid":"{}","start_blockheight":2,"end_blockheight":5,"genesis_blockhash":"0000000000000000000000000000000000000000000000000000000000000000","fee_percentage":5,"num_tickets":10}},"bids":[{{"txid":"1234567890000000000000000000000000000000000000000000000000000000","pubkey":"026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3"}}]}},{{"request":{{"txid":"{}","start_blockheight":2,"end_blockheight":5,"genesis_blockhash":"0000000000000000000000000000000000000000000000000000000000000000","fee_percentage":5,"num_tickets":10}},"bids":[{{"txid":"1234567890000000000000000000000000000000000000000000000000000000","pubkey":"026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3"}}]}}]}}"#,
+            format!(
+                r#"{{"requests":[{{"request":{{"txid":"{}","start_blockheight":2,"end_blockheight":5,"genesis_blockhash":"0000000000000000000000000000000000000000000000000000000000000000","fee_percentage":5,"num_tickets":10}},"bids":[{{"txid":"1234567890000000000000000000000000000000000000000000000000000000","pubkey":"026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3"}}]}},{{"request":{{"txid":"{}","start_blockheight":2,"end_blockheight":5,"genesis_blockhash":"0000000000000000000000000000000000000000000000000000000000000000","fee_percentage":5,"num_tickets":10}},"bids":[{{"txid":"1234567890000000000000000000000000000000000000000000000000000000","pubkey":"026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3"}}]}}]}}"#,
                 dummy_hash.to_string(),
-                dummy_hash2.to_string()),
+                dummy_hash2.to_string()
+            ),
             resp.wait().unwrap()
         );
     }
diff --git a/src/challenger.rs b/src/challenger.rs
index 22784c7..5deab01 100644
--- a/src/challenger.rs
+++ b/src/challenger.rs
@@ -93,6 +93,7 @@ pub fn run_challenge_request<T: Service, K: ClientChain, D: Storage>(
     verify_duration: time::Duration,
     challenge_duration: time::Duration,
     challenge_frequency: u64,
+    refresh_delay: time::Duration,
 ) -> Result<()> {
     let request = challenge_state.lock().unwrap().request.clone(); // clone as const and drop mutex
     info! {"Running challenge request: {:?}", request};
@@ -103,8 +104,8 @@ pub fn run_challenge_request<T: Service, K: ClientChain, D: Storage>(
         if (request.end_blockheight as u64) < challenge_height {
             break;
         } else if (challenge_height - prev_challenge_height) < challenge_frequency {
-            info! {"Sleeping for 10 sec..."}
-            thread::sleep(time::Duration::from_secs(10));
+            info! {"Sleeping for {} sec...",time::Duration::as_secs(&refresh_delay)}
+            thread::sleep(refresh_delay);
             continue;
         }
 
@@ -207,17 +208,8 @@ mod tests {
 
     use std::sync::mpsc::{channel, Receiver, Sender};
 
-    use bitcoin_hashes::Hash;
-
-    use crate::clientchain::MockClientChain;
     use crate::error::Error;
-    use crate::service::MockService;
-    use crate::storage::MockStorage;
-
-    /// Generate dummy hash for tests
-    fn gen_dummy_hash(i: u8) -> sha256d::Hash {
-        sha256d::Hash::from_slice(&[i as u8; 32]).unwrap()
-    }
+    use crate::util::testing::{gen_dummy_hash, MockClientChain, MockService, MockStorage};
 
     #[test]
     fn verify_challenge_test() {
@@ -396,6 +388,7 @@ mod tests {
             time::Duration::from_millis(10),
             time::Duration::from_millis(10),
             3,
+            time::Duration::from_millis(10),
         );
         match res {
             Ok(_) => {
@@ -428,6 +421,7 @@ mod tests {
             time::Duration::from_millis(10),
             time::Duration::from_millis(10),
             1,
+            time::Duration::from_millis(10),
         );
         match res {
             Ok(_) => {
@@ -464,6 +458,7 @@ mod tests {
             time::Duration::from_millis(10),
             time::Duration::from_millis(10),
             1,
+            time::Duration::from_millis(10),
         )
         .is_err());
         clientchain.return_err = false;
@@ -482,6 +477,7 @@ mod tests {
             time::Duration::from_millis(10),
             time::Duration::from_millis(10),
             1,
+            time::Duration::from_millis(10),
         )
         .is_err());
         service.return_err = false;
@@ -501,6 +497,7 @@ mod tests {
             time::Duration::from_millis(10),
             time::Duration::from_millis(10),
             1,
+            time::Duration::from_millis(10),
         )
         .is_err());
 
@@ -522,6 +519,7 @@ mod tests {
             time::Duration::from_millis(10),
             time::Duration::from_millis(10),
             1,
+            time::Duration::from_millis(10),
         );
         match res {
             Ok(_) => {
@@ -547,6 +545,7 @@ mod tests {
             time::Duration::from_millis(10),
             time::Duration::from_millis(10),
             1,
+            time::Duration::from_millis(10),
         );
         match res {
             Ok(_) => {
diff --git a/src/clientchain.rs b/src/clientchain.rs
index 9e14635..912ae5a 100644
--- a/src/clientchain.rs
+++ b/src/clientchain.rs
@@ -2,29 +2,28 @@
 //!
 //! Client chain interface and implementations
 
-use std::cell::RefCell;
 use std::collections::HashMap;
 
-use bitcoin_hashes::{hex::FromHex, sha256d, Hash};
+use bitcoin_hashes::{hex::FromHex, sha256d};
 use ocean_rpc::{json, RpcApi};
 
 use crate::config::ClientChainConfig;
 use crate::error::{CError, Error, Result};
 use crate::ocean::OceanClient;
 
-/// Method that returns the first unspent for a specified asset label
+/// Method that returns the first unspent output for given asset
 /// or an error if the client wallet does not have any unspent/funds
-fn get_first_unspent(client: &OceanClient, asset: &str, asset_hash: &sha256d::Hash) -> Result<json::ListUnspentResult> {
-    // Check challenge asset hash is in the wallet
-    let unspent = client.list_unspent(None, None, None, None, None)?;
-    for tx in unspent.iter() {
-        if tx.assetlabel == Some(asset.into()) && tx.asset == *asset_hash {
-            return Ok(tx.clone());
-        }
+pub fn get_first_unspent(client: &OceanClient, asset: &str) -> Result<json::ListUnspentResult> {
+    // Check asset is held by the wallet and return unspent tx
+    let unspent = client.list_unspent(None, None, None, None, Some(asset))?;
+    if unspent.is_empty() {
+        // TODO: custom error for clientchain
+        return Err(Error::from(CError::MissingUnspent(
+            String::from(asset),
+            String::from("Client"),
+        )));
     }
-
-    // TODO: custom error for clientchain
-    Err(Error::from(CError::MissingUnspent))
+    Ok(unspent[0].clone())
 }
 
 /// ClientChain trait defining desired functionality for interfacing
@@ -42,8 +41,6 @@ pub struct RpcClientChain<'a> {
     client: OceanClient,
     /// Challenge asset id
     asset: &'a str,
-    /// Challenge asset hash
-    asset_hash: sha256d::Hash,
 }
 
 impl<'a> RpcClientChain<'a> {
@@ -54,15 +51,14 @@ impl<'a> RpcClientChain<'a> {
             Some(clientchain_config.user.clone()),
             Some(clientchain_config.pass.clone()),
         )?;
-
-        let asset_hash = sha256d::Hash::from_hex(&clientchain_config.asset_hash)?;
-
         // check we have funds for challenge asset
-        match get_first_unspent(&client, &clientchain_config.asset, &asset_hash) {
+        match get_first_unspent(&client, &clientchain_config.asset) {
             // If this fails attempt to import the private key and then fetch the unspent again
             Err(_) => {
                 client.import_priv_key(&clientchain_config.asset_key, None, None)?;
-                let _ = get_first_unspent(&client, &clientchain_config.asset, &asset_hash)?;
+                if let Err(e) = get_first_unspent(&client, &clientchain_config.asset) {
+                    return Err(e);
+                }
             }
             _ => (),
         }
@@ -70,7 +66,6 @@ impl<'a> RpcClientChain<'a> {
         Ok(RpcClientChain {
             client,
             asset: &clientchain_config.asset,
-            asset_hash,
         })
     }
 }
@@ -79,7 +74,7 @@ impl<'a> ClientChain for RpcClientChain<'a> {
     /// Send challenge transaction to client chain
     fn send_challenge(&self) -> Result<sha256d::Hash> {
         // get any unspent for the challenge asset
-        let unspent = get_first_unspent(&self.client, self.asset, &self.asset_hash)?;
+        let unspent = get_first_unspent(&self.client, self.asset)?;
 
         // construct the challenge transaction excluding fees
         // which are not required for policy transactions
@@ -130,48 +125,3 @@ impl<'a> ClientChain for RpcClientChain<'a> {
         Ok(false)
     }
 }
-
-/// Mock implementation of ClientChain using some mock logic for testing
-pub struct MockClientChain {
-    /// Flag that when set returns error on all inherited methods that return
-    /// Result
-    pub return_err: bool,
-    /// Flag that when set returns false on all inherited methods that return
-    /// bool
-    pub return_false: bool,
-    /// Mock client chain blockheight
-    pub height: RefCell<u64>,
-}
-
-impl MockClientChain {
-    /// Create a MockClientChain with all flags turned off by default
-    pub fn new() -> Self {
-        MockClientChain {
-            return_err: false,
-            return_false: false,
-            height: RefCell::new(0),
-        }
-    }
-}
-
-impl ClientChain for MockClientChain {
-    /// Send challenge transaction to client chain
-    fn send_challenge(&self) -> Result<sha256d::Hash> {
-        if self.return_err {
-            return Err(Error::from(CError::Generic("send_challenge failed".to_owned())));
-        }
-        // Use height to generate mock challenge hash
-        Ok(sha256d::Hash::from_slice(&[(*self.height.borrow() % 16) as u8; 32])?)
-    }
-
-    /// Verify challenge transaction has been included in the chain
-    fn verify_challenge(&self, _txid: &sha256d::Hash) -> Result<bool> {
-        if self.return_err {
-            return Err(Error::from(CError::Generic("verify_challenge failed".to_owned())));
-        }
-        if self.return_false {
-            return Ok(false);
-        }
-        Ok(true)
-    }
-}
diff --git a/src/config.rs b/src/config.rs
index 541c5ea..f4312a8 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -3,10 +3,12 @@
 //! Config module handling config options from file/env
 
 use config_rs::{Config as ConfigRs, Environment, File};
+use error::InputErrorType::{GenHash, PrivKey};
 use serde::{Deserialize, Serialize};
 use std::env;
+use util::checks::{check_hash_string, check_privkey_string};
 
-use crate::error::Result;
+use crate::error::{CError, Error, Result};
 
 #[derive(Debug, Serialize, Deserialize)]
 /// Api specific config
@@ -59,8 +61,6 @@ pub struct ClientChainConfig {
     pub user: String,
     /// Client rpc pass
     pub pass: String,
-    /// Client asset hash
-    pub asset_hash: String,
     /// Client genesis hash
     pub genesis_hash: String,
     /// Client asset label
@@ -75,7 +75,6 @@ impl Default for ClientChainConfig {
             host: String::new(),
             user: String::new(),
             pass: String::new(),
-            asset_hash: String::new(),
             genesis_hash: String::new(),
             asset: String::from("CHALLENGE"),
             asset_key: String::new(),
@@ -208,9 +207,6 @@ impl Config {
         if let Ok(v) = env::var("CO_CLIENTCHAIN_ASSET_KEY") {
             let _ = conf_rs.set("clientchain.asset_key", v)?;
         }
-        if let Ok(v) = env::var("CO_CLIENTCHAIN_ASSET_HASH") {
-            let _ = conf_rs.set("clientchain.asset_hash", v)?;
-        }
         if let Ok(v) = env::var("CO_CLIENTCHAIN_GENESIS_HASH") {
             let _ = conf_rs.set("clientchain.genesis_hash", v)?;
         }
@@ -228,6 +224,19 @@ impl Config {
             let _ = conf_rs.set("storage.name", v)?;
         }
 
+        // Perform type checks
+        if let Ok(key) = conf_rs.get_str("clientchain.asset_key") {
+            if !check_privkey_string(&key) {
+                println!("{}", CError::InputError(PrivKey, key.clone()));
+                return Err(Error::from(CError::InputError(PrivKey, key)));
+            }
+        }
+        if let Ok(hash) = conf_rs.get_str("clientchain.genesis_hash") {
+            if !check_hash_string(&hash) {
+                println!("{}", CError::InputError(GenHash, hash.clone()));
+                return Err(Error::from(CError::InputError(GenHash, hash)));
+            }
+        }
         Ok(conf_rs.try_into()?)
     }
 }
diff --git a/src/coordinator.rs b/src/coordinator.rs
index eb99439..f494506 100644
--- a/src/coordinator.rs
+++ b/src/coordinator.rs
@@ -77,6 +77,7 @@ pub fn run_request<T: Service, K: ClientChain, D: Storage>(
                 time::Duration::from_secs(config.verify_duration),
                 time::Duration::from_secs(config.challenge_duration),
                 config.challenge_frequency,
+                time::Duration::from_secs(10),
             )?;
 
             // stop listener service
diff --git a/src/error.rs b/src/error.rs
index 77c7702..ba7b19a 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -22,8 +22,11 @@ pub enum CError {
     MissingBids,
     /// Listener receiver disconnected error
     ReceiverDisconnected,
-    /// Missing unspent for challenge asset
-    MissingUnspent,
+    /// Missing unspent for challenge asset. Takes parameters asset label and
+    /// chain
+    MissingUnspent(String, String),
+    /// Config input error. Takes parameter input error type
+    InputError(InputErrorType, String),
     /// Generic error from string error message
     Generic(String),
 }
@@ -34,10 +37,36 @@ impl From<String> for CError {
     }
 }
 
+/// Input parameter error types
+#[derive(Debug)]
+pub enum InputErrorType {
+    /// Invalid private key string
+    PrivKey,
+    /// Invalid genesis hash string
+    GenHash,
+}
+
+impl InputErrorType {
+    fn as_str(&self) -> &'static str {
+        match *self {
+            InputErrorType::PrivKey => "Invalid private key input - must be base58check string of length 52.",
+            InputErrorType::GenHash => {
+                "Invalid client chain genesis hash input - must be hexadecimal string of length 64."
+            }
+        }
+    }
+}
+
 impl fmt::Display for CError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self {
-            CError::Generic(ref e) => write!(f, "generic error: {}", e),
+            CError::Generic(ref e) => write!(f, "generic Error: {}", e),
+            CError::InputError(ref error, ref value) => {
+                write!(f, "Input Error: {} \nProblem value: {}", error.as_str(), value)
+            }
+            CError::MissingUnspent(ref asset, ref chain) => {
+                write!(f, "No unspent found for {} asset on {} chain", asset, chain)
+            }
             _ => f.write_str(error::Error::description(self)),
         }
     }
@@ -46,10 +75,11 @@ impl fmt::Display for CError {
 impl error::Error for CError {
     fn description(&self) -> &str {
         match *self {
-            CError::Generic(_) => "generic error",
-            CError::MissingBids => "no bids found",
-            CError::ReceiverDisconnected => "challenge response receiver disconnected",
-            CError::MissingUnspent => "no unspent found for challenge asset",
+            CError::Generic(_) => "Generic error",
+            CError::MissingBids => "No bids found",
+            CError::ReceiverDisconnected => "Challenge response receiver disconnected",
+            CError::MissingUnspent(_, _) => "No unspent found for asset",
+            CError::InputError(_, _) => "Input parameter error",
         }
     }
     fn source(&self) -> Option<&(dyn error::Error + 'static)> {
diff --git a/src/lib.rs b/src/lib.rs
index 8165a66..d6812fa 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -44,3 +44,8 @@ pub mod ocean;
 pub mod request;
 pub mod service;
 pub mod storage;
+/// utilities
+pub mod util {
+    pub mod checks;
+    pub mod testing;
+}
diff --git a/src/listener.rs b/src/listener.rs
index abd4e58..0cc59c1 100644
--- a/src/listener.rs
+++ b/src/listener.rs
@@ -178,38 +178,9 @@ mod tests {
     use std::sync::mpsc::{channel, Receiver, TryRecvError};
 
     use bitcoin_hashes::hex::ToHex;
-    use bitcoin_hashes::Hash;
     use secp256k1::SecretKey;
 
-    use crate::request::{BidSet, Request as ServiceRequest};
-
-    /// Generate dummy hash for tests
-    fn gen_dummy_hash(i: u8) -> sha256d::Hash {
-        sha256d::Hash::from_slice(&[i as u8; 32]).unwrap()
-    }
-
-    /// Geberate dummy challenge state
-    fn gen_challenge_state(request_hash: &sha256d::Hash, challenge_hash: &sha256d::Hash) -> ChallengeState {
-        let request = ServiceRequest {
-            txid: sha256d::Hash::from_slice(&[0xff as u8; 32]).unwrap(),
-            start_blockheight: 2,
-            end_blockheight: 5,
-            genesis_blockhash: *request_hash,
-            fee_percentage: 5,
-            num_tickets: 10,
-        };
-        let mut bids = BidSet::new();
-        let _ = bids.insert(Bid {
-            txid: sha256d::Hash::from_hex("1234567890000000000000000000000000000000000000000000000000000000").unwrap(),
-            // pubkey corresponding to SecretKey::from_slice(&[0xaa; 32])
-            pubkey: PublicKey::from_str("026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3").unwrap(),
-        });
-        ChallengeState {
-            request,
-            bids,
-            latest_challenge: Some(*challenge_hash),
-        }
-    }
+    use crate::util::testing::{gen_challenge_state_with_challenge, gen_dummy_hash};
 
     #[test]
     fn challengeproof_from_json_test() {
@@ -272,7 +243,7 @@ mod tests {
     #[test]
     fn challengeproof_verify_test() {
         let chl_hash = gen_dummy_hash(11);
-        let _challenge_state = gen_challenge_state(&gen_dummy_hash(3), &chl_hash);
+        let _challenge_state = gen_challenge_state_with_challenge(&gen_dummy_hash(3), &chl_hash);
         let bid_txid = _challenge_state.bids.iter().next().unwrap().txid;
         let bid_pubkey = _challenge_state.bids.iter().next().unwrap().pubkey;
 
@@ -315,7 +286,7 @@ mod tests {
         let (resp_tx, resp_rx): (Sender<ChallengeResponse>, Receiver<ChallengeResponse>) = channel();
 
         let chl_hash = gen_dummy_hash(11);
-        let _challenge_state = gen_challenge_state(&gen_dummy_hash(3), &chl_hash);
+        let _challenge_state = gen_challenge_state_with_challenge(&gen_dummy_hash(3), &chl_hash);
         let bid_txid = _challenge_state.bids.iter().next().unwrap().txid;
         let bid_pubkey = _challenge_state.bids.iter().next().unwrap().pubkey;
         let challenge_state = Arc::new(Mutex::new(_challenge_state));
@@ -453,7 +424,7 @@ mod tests {
         let (resp_tx, resp_rx): (Sender<ChallengeResponse>, Receiver<ChallengeResponse>) = channel();
 
         let chl_hash = gen_dummy_hash(8);
-        let _challenge_state = gen_challenge_state(&gen_dummy_hash(1), &chl_hash);
+        let _challenge_state = gen_challenge_state_with_challenge(&gen_dummy_hash(1), &chl_hash);
         let bid_txid = _challenge_state.bids.iter().next().unwrap().txid;
         let bid_pubkey = _challenge_state.bids.iter().next().unwrap().pubkey;
         let challenge_state = Arc::new(Mutex::new(_challenge_state));
@@ -581,13 +552,16 @@ mod tests {
         assert!(resp_rx.try_recv() == Err(TryRecvError::Empty)); // check receiver empty
 
         // Invalid bid on request body (pubkey does not exist)
-        let data = format!(r#"
+        let data = format!(
+            r#"
         {{
             "txid": "{}",
             "pubkey": "03356190524d52d7e94e1bd43e8f23778e585a4fe1f275e65a06fa5ceedb67d111",
             "hash": "0404040404040404040404040404040404040404040404040404040404040404",
             "sig": "304402201742daea5ec3b7306b9164be862fc1659cc830032180b8b17beffe02645860d602201039eba402d22e630308e6af05da8dd4f05b51b7d672ca5fc9e3b0a57776365c"
-        }}"#, bid_txid);
+        }}"#,
+            bid_txid
+        );
         let request = Request::new(Body::from(data));
         let _ = handle_challengeproof(request, challenge_state.clone(), resp_tx.clone())
             .map(|res| {
@@ -603,13 +577,16 @@ mod tests {
         assert!(resp_rx.try_recv() == Err(TryRecvError::Empty)); // check receiver empty
 
         // Request send for an invalid / out of date challenge hash
-        let data = format!(r#"
+        let data = format!(
+            r#"
         {{
             "txid": "{}",
             "pubkey": "{}",
             "hash": "0404040404040404040404040404040404040404040404040404040404040404",
             "sig": "304402201742daea5ec3b7306b9164be862fc1659cc830032180b8b17beffe02645860d602201039eba402d22e630308e6af05da8dd4f05b51b7d672ca5fc9e3b0a57776365c"
-        }}"#, bid_txid, bid_pubkey);
+        }}"#,
+            bid_txid, bid_pubkey
+        );
         let request = Request::new(Body::from(data));
         let _ = handle_challengeproof(request, challenge_state.clone(), resp_tx.clone())
             .map(|res| {
@@ -625,13 +602,16 @@ mod tests {
         assert!(resp_rx.try_recv() == Err(TryRecvError::Empty)); // check receiver empty
 
         // Request sent an invalid sig for the correct bid and challenge hash
-        let data = format!(r#"
+        let data = format!(
+            r#"
         {{
             "txid": "{}",
             "pubkey": "{}",
             "hash": "{}",
             "sig": "304402201742daea5ec3b7306b9164be862fc1659cc830032180b8b17beffe02645860d602201039eba402d22e630308e6af05da8dd4f05b51b7d672ca5fc9e3b0a57776365c"
-        }}"#, bid_txid, bid_pubkey, chl_hash);
+        }}"#,
+            bid_txid, bid_pubkey, chl_hash
+        );
         let request = Request::new(Body::from(data));
         let _ = handle_challengeproof(request, challenge_state.clone(), resp_tx.clone())
             .map(|res| {
diff --git a/src/service.rs b/src/service.rs
index e2a4e91..bb31319 100644
--- a/src/service.rs
+++ b/src/service.rs
@@ -2,15 +2,11 @@
 //!
 //! Service chain interface and implementations
 
-use std::cell::RefCell;
-use std::str::FromStr;
-
-use bitcoin_hashes::{hex::FromHex, sha256d, Hash};
+use bitcoin_hashes::sha256d;
 use ocean_rpc::RpcApi;
-use secp256k1::key::PublicKey;
 
 use crate::config::ServiceConfig;
-use crate::error::{CError, Error, Result};
+use crate::error::Result;
 use crate::ocean::OceanClient;
 use crate::request::{Bid, BidSet, Request};
 
@@ -87,101 +83,3 @@ impl Service for RpcService {
         Ok(self.client.get_block_count()?)
     }
 }
-
-/// Mock implementation of Service using some mock logic for testing
-pub struct MockService {
-    /// Flag that when set returns error on all inherited methods that return
-    /// Result
-    pub return_err: bool,
-    /// Flag that when set returns None on all inherited methods that return
-    /// Option
-    pub return_none: bool,
-    /// Current active request
-    pub request: Request,
-    /// Mock service chain blockheight - incremented by default on
-    /// get_blockheight
-    pub height: RefCell<u64>,
-}
-
-impl MockService {
-    /// Create a MockService with all flags turned off by default
-    pub fn new() -> Self {
-        let request = Request {
-            txid: sha256d::Hash::from_slice(&[0xff as u8; 32]).unwrap(),
-            start_blockheight: 2,
-            end_blockheight: 5,
-            genesis_blockhash: sha256d::Hash::from_hex(
-                "0000000000000000000000000000000000000000000000000000000000000000",
-            )
-            .unwrap(),
-            fee_percentage: 5,
-            num_tickets: 10,
-        };
-
-        MockService {
-            return_err: false,
-            return_none: false,
-            request,
-            height: RefCell::new(0),
-        }
-    }
-}
-
-impl Service for MockService {
-    /// Get all active requests, if any, from service chain
-    fn get_requests(&self) -> Result<Option<Vec<Request>>> {
-        Ok(None)
-    }
-
-    /// Try get active request, by genesis hash, from service chain
-    fn get_request(&self, hash: &sha256d::Hash) -> Result<Option<Request>> {
-        if self.return_none {
-            return Ok(None);
-        }
-        if self.return_err {
-            return Err(Error::from(CError::Generic("get_request failed".to_owned())));
-        }
-
-        let mut dummy_req = self.request.clone();
-        dummy_req.genesis_blockhash = *hash;
-        Ok(Some(dummy_req))
-    }
-
-    /// Try get active request bids, by transaction hash, from service chain
-    fn get_request_bids(&self, _hash: &sha256d::Hash) -> Result<Option<BidSet>> {
-        if self.return_none {
-            return Ok(None);
-        }
-        if self.return_err {
-            return Err(Error::from(CError::Generic("get_request_bids failed".to_owned())));
-        }
-        let mut bid_set = BidSet::new();
-        let _ = bid_set.insert(Bid {
-            txid: sha256d::Hash::from_hex("1234567890000000000000000000000000000000000000000000000000000000").unwrap(),
-            // pubkey corresponding to SecretKey::from_slice(&[0xaa; 32])
-            pubkey: PublicKey::from_str("026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3").unwrap(),
-        });
-        let _ = bid_set.insert(Bid {
-            txid: sha256d::Hash::from_hex("0000000001234567890000000000000000000000000000000000000000000000").unwrap(),
-            // pubkey corresponding to SecretKey::from_slice(&[0xbb; 32])
-            pubkey: PublicKey::from_str("0268680737c76dabb801cb2204f57dbe4e4579e4f710cd67dc1b4227592c81e9b5").unwrap(),
-        });
-        let _ = bid_set.insert(Bid {
-            txid: sha256d::Hash::from_hex("0000000000000000001234567890000000000000000000000000000000000000").unwrap(),
-            // pubkey corresponding to SecretKey::from_slice(&[0xcc; 32])
-            pubkey: PublicKey::from_str("02b95c249d84f417e3e395a127425428b540671cc15881eb828c17b722a53fc599").unwrap(),
-        });
-        Ok(Some(bid_set))
-    }
-
-    /// Get service chain blockheight
-    fn get_blockheight(&self) -> Result<u64> {
-        if self.return_err {
-            return Err(Error::from(CError::Generic("get_blockheight failed".to_owned())));
-        }
-
-        let mut height = self.height.borrow_mut();
-        *height += 1; // increment height for integration testing
-        Ok(*height - 1) // return previous height
-    }
-}
diff --git a/src/storage.rs b/src/storage.rs
index 7a66fcb..88fe94e 100644
--- a/src/storage.rs
+++ b/src/storage.rs
@@ -2,7 +2,6 @@
 //!
 //! Storage interface and implementations
 
-use std::cell::RefCell;
 use std::mem::drop;
 use std::str::FromStr;
 use std::sync::{Mutex, MutexGuard};
@@ -15,7 +14,7 @@ use secp256k1::key::PublicKey;
 
 use crate::challenger::{ChallengeResponseIds, ChallengeState};
 use crate::config::StorageConfig;
-use crate::error::{CError, Error, Result};
+use crate::error::Result;
 use crate::request::{Bid, BidSet, Request};
 
 /// Storage trait defining required functionality for objects that store request
@@ -237,7 +236,7 @@ impl Storage for MongoStorage {
 }
 
 /// Util method that generates a Request document from a request
-fn request_to_doc(request: &Request) -> OrderedDocument {
+pub fn request_to_doc(request: &Request) -> OrderedDocument {
     doc! {
         "txid": request.txid.to_string(),
         "start_blockheight": request.start_blockheight,
@@ -249,7 +248,7 @@ fn request_to_doc(request: &Request) -> OrderedDocument {
 }
 
 /// Util method that generates a request from a Request document
-fn doc_to_request(doc: &OrderedDocument) -> Request {
+pub fn doc_to_request(doc: &OrderedDocument) -> Request {
     Request {
         txid: sha256d::Hash::from_hex(doc.get("txid").unwrap().as_str().unwrap()).unwrap(),
         start_blockheight: doc.get("start_blockheight").unwrap().as_i32().unwrap() as u32,
@@ -261,7 +260,7 @@ fn doc_to_request(doc: &OrderedDocument) -> Request {
 }
 
 /// Util method that generates a Bid document from a request bid
-fn bid_to_doc(request_id: &Bson, bid: &Bid) -> OrderedDocument {
+pub fn bid_to_doc(request_id: &Bson, bid: &Bid) -> OrderedDocument {
     doc! {
         "request_id": request_id.clone(),
         "txid": bid.txid.to_string(),
@@ -270,7 +269,7 @@ fn bid_to_doc(request_id: &Bson, bid: &Bid) -> OrderedDocument {
 }
 
 /// Util method that generates a request bid from a Bid document
-fn doc_to_bid(doc: &OrderedDocument) -> Bid {
+pub fn doc_to_bid(doc: &OrderedDocument) -> Bid {
     Bid {
         txid: sha256d::Hash::from_hex(doc.get("txid").unwrap().as_str().unwrap()).unwrap(),
         pubkey: PublicKey::from_str(doc.get("pubkey").unwrap().as_str().unwrap()).unwrap(),
@@ -278,7 +277,7 @@ fn doc_to_bid(doc: &OrderedDocument) -> Bid {
 }
 
 /// Util method that generates a Response document from challenge responses
-fn challenge_responses_to_doc(request_id: &Bson, responses: &ChallengeResponseIds) -> OrderedDocument {
+pub fn challenge_responses_to_doc(request_id: &Bson, responses: &ChallengeResponseIds) -> OrderedDocument {
     let bids = responses
         .iter()
         .map(|x| Bson::String(x.to_string()))
@@ -290,7 +289,7 @@ fn challenge_responses_to_doc(request_id: &Bson, responses: &ChallengeResponseId
 }
 
 /// Util method that generates challenge responses from a Response document
-fn doc_to_challenge_responses(doc: &OrderedDocument) -> ChallengeResponseIds {
+pub fn doc_to_challenge_responses(doc: &OrderedDocument) -> ChallengeResponseIds {
     doc.get_array("bid_txids")
         .unwrap()
         .iter()
@@ -298,111 +297,13 @@ fn doc_to_challenge_responses(doc: &OrderedDocument) -> ChallengeResponseIds {
         .collect()
 }
 
-/// Mock implementation of Storage storing data in memory for testing
-#[derive(Debug)]
-pub struct MockStorage {
-    /// Flag that when set returns error on all inherited methods that return
-    /// Result
-    pub return_err: bool,
-    /// Store requests in memory
-    pub requests: RefCell<Vec<OrderedDocument>>,
-    /// Store bids in memory
-    pub bids: RefCell<Vec<OrderedDocument>>,
-    /// Store challenge responses in memory
-    pub challenge_responses: RefCell<Vec<OrderedDocument>>,
-}
-
-impl MockStorage {
-    /// Create a MockStorage with all flags turned off by default
-    pub fn new() -> Self {
-        MockStorage {
-            return_err: false,
-            requests: RefCell::new(vec![]),
-            bids: RefCell::new(vec![]),
-            challenge_responses: RefCell::new(vec![]),
-        }
-    }
-}
-
-impl Storage for MockStorage {
-    /// Store the state of a challenge request
-    fn save_challenge_state(&self, challenge: &ChallengeState) -> Result<()> {
-        if self.return_err {
-            return Err(Error::from(CError::Generic("save_challenge_state failed".to_owned())));
-        }
-        self.requests.borrow_mut().push(request_to_doc(&challenge.request));
-        for bid in challenge.bids.iter() {
-            self.bids
-                .borrow_mut()
-                .push(bid_to_doc(&Bson::String(challenge.request.txid.to_string()), bid))
-        }
-        Ok(())
-    }
-
-    /// Store responses for a specific challenge request
-    fn save_response(&self, request_hash: sha256d::Hash, ids: &ChallengeResponseIds) -> Result<()> {
-        if self.return_err {
-            return Err(Error::from(CError::Generic("save_response failed".to_owned())));
-        }
-        self.challenge_responses
-            .borrow_mut()
-            .push(challenge_responses_to_doc(&Bson::String(request_hash.to_string()), ids));
-        Ok(())
-    }
-
-    /// Get all challenge responses for a specific request
-    fn get_responses(&self, request_hash: sha256d::Hash) -> Result<Vec<ChallengeResponseIds>> {
-        let mut challenge_responses = vec![];
-        for doc in self.challenge_responses.borrow().to_vec().iter() {
-            if doc.get("request_id").unwrap().as_str().unwrap() == request_hash.to_string() {
-                challenge_responses.push(doc_to_challenge_responses(doc));
-            }
-        }
-        Ok(challenge_responses)
-    }
-
-    /// Get all bids for a specific request
-    fn get_bids(&self, request_hash: sha256d::Hash) -> Result<BidSet> {
-        let mut bids = BidSet::new();
-        for doc in self.bids.borrow().to_vec().iter() {
-            if doc.get("request_id").unwrap().as_str().unwrap() == request_hash.to_string() {
-                let _ = bids.insert(doc_to_bid(doc));
-            }
-        }
-        Ok(bids)
-    }
-
-    /// Get all the requests
-    fn get_requests(&self) -> Result<Vec<Request>> {
-        let mut requests = vec![];
-        for doc in self.requests.borrow().to_vec().iter() {
-            requests.push(doc_to_request(doc))
-        }
-        Ok(requests)
-    }
-
-    /// Get request for a specific request txid
-    fn get_request(&self, request_hash: sha256d::Hash) -> Result<Option<Request>> {
-        for doc in self.requests.borrow().to_vec().iter() {
-            if doc.get("txid").unwrap().as_str().unwrap() == request_hash.to_string() {
-                return Ok(Some(doc_to_request(doc)));
-            }
-        }
-        Ok(None)
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;
 
-    use bitcoin_hashes::Hash;
     use mongodb::oid::ObjectId;
 
-    /// Generate dummy hash for tests
-    fn gen_dummy_hash(i: u8) -> sha256d::Hash {
-        sha256d::Hash::from_slice(&[i as u8; 32]).unwrap()
-    }
+    use crate::util::testing::gen_dummy_hash;
 
     #[test]
     fn request_doc_test() {
diff --git a/src/util/checks.rs b/src/util/checks.rs
new file mode 100644
index 0000000..8dfd270
--- /dev/null
+++ b/src/util/checks.rs
@@ -0,0 +1,25 @@
+//! checks
+//!
+//! validity checks for string inputs. Use before adding to Config
+
+/// Return true if char is in base58check character set, false otherwise
+fn is_base58_char(char: &char) -> bool {
+    match *char as u8 {
+        b'0'..=b'9' | b'A'..=b'H' | b'J'..=b'N' | b'P'..=b'Z' | b'a'..=b'k' | b'm'..=b'z' => true,
+        _ => false,
+    }
+}
+/// Check for correct priv key input string format
+pub fn check_privkey_string(str: &String) -> bool {
+    if str.len() == 52 && str.chars().all(|x| is_base58_char(&x)) {
+        return true;
+    }
+    return false;
+}
+/// Check for correct hash input string format
+pub fn check_hash_string(str: &String) -> bool {
+    if str.len() == 64 && str.chars().all(|x| x.is_ascii_hexdigit()) {
+        return true;
+    }
+    return false;
+}
diff --git a/src/util/testing.rs b/src/util/testing.rs
new file mode 100644
index 0000000..9597a80
--- /dev/null
+++ b/src/util/testing.rs
@@ -0,0 +1,308 @@
+//! # Testing Utils
+//!
+//! Colleciton of helper functions used in tests module
+
+use bitcoin_hashes::{hex::FromHex, sha256d, Hash};
+use mongodb::ordered::OrderedDocument;
+use mongodb::Bson;
+use secp256k1::PublicKey;
+use std::cell::RefCell;
+use std::str::FromStr;
+
+use crate::challenger::{ChallengeResponseIds, ChallengeState};
+use crate::clientchain::ClientChain;
+use crate::request::{Bid, BidSet, Request as ServiceRequest};
+use crate::service::Service;
+use crate::storage::*;
+
+use crate::error::*;
+
+/// Generate dummy hash
+pub fn gen_dummy_hash(i: u8) -> sha256d::Hash {
+    sha256d::Hash::from_slice(&[i as u8; 32]).unwrap()
+}
+
+/// Generate dummy challenge state
+pub fn gen_challenge_state(request_hash: &sha256d::Hash) -> ChallengeState {
+    let request = ServiceRequest {
+        txid: *request_hash,
+        start_blockheight: 2,
+        end_blockheight: 5,
+        genesis_blockhash: gen_dummy_hash(0),
+        fee_percentage: 5,
+        num_tickets: 10,
+    };
+    let mut bids = BidSet::new();
+    let _ = bids.insert(Bid {
+        txid: sha256d::Hash::from_hex("1234567890000000000000000000000000000000000000000000000000000000").unwrap(),
+        pubkey: PublicKey::from_str("026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3").unwrap(),
+    });
+    ChallengeState {
+        request,
+        bids,
+        latest_challenge: Some(gen_dummy_hash(0)),
+    }
+}
+
+/// Generate dummy challenge state with specific challenge
+pub fn gen_challenge_state_with_challenge(
+    request_hash: &sha256d::Hash,
+    challenge_hash: &sha256d::Hash,
+) -> ChallengeState {
+    let request = ServiceRequest {
+        txid: sha256d::Hash::from_slice(&[0xff as u8; 32]).unwrap(),
+        start_blockheight: 2,
+        end_blockheight: 5,
+        genesis_blockhash: *request_hash,
+        fee_percentage: 5,
+        num_tickets: 10,
+    };
+    let mut bids = BidSet::new();
+    let _ = bids.insert(Bid {
+        txid: sha256d::Hash::from_hex("1234567890000000000000000000000000000000000000000000000000000000").unwrap(),
+        // pubkey corresponding to SecretKey::from_slice(&[0xaa; 32])
+        pubkey: PublicKey::from_str("026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3").unwrap(),
+    });
+    ChallengeState {
+        request,
+        bids,
+        latest_challenge: Some(*challenge_hash),
+    }
+}
+
+/// Mock implementation of ClientChain using some mock logic for testing
+pub struct MockClientChain {
+    /// Flag that when set returns error on all inherited methods that return
+    /// Result
+    pub return_err: bool,
+    /// Flag that when set returns false on all inherited methods that return
+    /// bool
+    pub return_false: bool,
+    /// Mock client chain blockheight
+    pub height: RefCell<u64>,
+}
+
+impl MockClientChain {
+    /// Create a MockClientChain with all flags turned off by default
+    pub fn new() -> Self {
+        MockClientChain {
+            return_err: false,
+            return_false: false,
+            height: RefCell::new(0),
+        }
+    }
+}
+
+impl ClientChain for MockClientChain {
+    /// Send challenge transaction to client chain
+    fn send_challenge(&self) -> Result<sha256d::Hash> {
+        if self.return_err {
+            return Err(Error::from(CError::Generic("send_challenge failed".to_owned())));
+        }
+        // Use height to generate mock challenge hash
+        Ok(sha256d::Hash::from_slice(&[(*self.height.borrow() % 16) as u8; 32])?)
+    }
+
+    /// Verify challenge transaction has been included in the chain
+    fn verify_challenge(&self, _txid: &sha256d::Hash) -> Result<bool> {
+        if self.return_err {
+            return Err(Error::from(CError::Generic("verify_challenge failed".to_owned())));
+        }
+        if self.return_false {
+            return Ok(false);
+        }
+        Ok(true)
+    }
+}
+
+/// Mock implementation of Service using some mock logic for testing
+pub struct MockService {
+    /// Flag that when set returns error on all inherited methods that return
+    /// Result
+    pub return_err: bool,
+    /// Flag that when set returns None on all inherited methods that return
+    /// Option
+    pub return_none: bool,
+    /// Current active request
+    pub request: ServiceRequest,
+    /// Mock service chain blockheight - incremented by default on
+    /// get_blockheight
+    pub height: RefCell<u64>,
+}
+
+impl MockService {
+    /// Create a MockService with all flags turned off by default
+    pub fn new() -> Self {
+        let request = ServiceRequest {
+            txid: sha256d::Hash::from_slice(&[0xff as u8; 32]).unwrap(),
+            start_blockheight: 2,
+            end_blockheight: 5,
+            genesis_blockhash: sha256d::Hash::from_hex(
+                "0000000000000000000000000000000000000000000000000000000000000000",
+            )
+            .unwrap(),
+            fee_percentage: 5,
+            num_tickets: 10,
+        };
+
+        MockService {
+            return_err: false,
+            return_none: false,
+            request,
+            height: RefCell::new(0),
+        }
+    }
+}
+
+impl Service for MockService {
+    /// Get all active requests, if any, from service chain
+    fn get_requests(&self) -> Result<Option<Vec<ServiceRequest>>> {
+        Ok(None)
+    }
+
+    /// Try get active request, by genesis hash, from service chain
+    fn get_request(&self, hash: &sha256d::Hash) -> Result<Option<ServiceRequest>> {
+        if self.return_none {
+            return Ok(None);
+        }
+        if self.return_err {
+            return Err(Error::from(CError::Generic("get_request failed".to_owned())));
+        }
+
+        let mut dummy_req = self.request.clone();
+        dummy_req.genesis_blockhash = *hash;
+        Ok(Some(dummy_req))
+    }
+
+    /// Try get active request bids, by transaction hash, from service chain
+    fn get_request_bids(&self, _hash: &sha256d::Hash) -> Result<Option<BidSet>> {
+        if self.return_none {
+            return Ok(None);
+        }
+        if self.return_err {
+            return Err(Error::from(CError::Generic("get_request_bids failed".to_owned())));
+        }
+        let mut bid_set = BidSet::new();
+        let _ = bid_set.insert(Bid {
+            txid: sha256d::Hash::from_hex("1234567890000000000000000000000000000000000000000000000000000000").unwrap(),
+            // pubkey corresponding to SecretKey::from_slice(&[0xaa; 32])
+            pubkey: PublicKey::from_str("026a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3").unwrap(),
+        });
+        let _ = bid_set.insert(Bid {
+            txid: sha256d::Hash::from_hex("0000000001234567890000000000000000000000000000000000000000000000").unwrap(),
+            // pubkey corresponding to SecretKey::from_slice(&[0xbb; 32])
+            pubkey: PublicKey::from_str("0268680737c76dabb801cb2204f57dbe4e4579e4f710cd67dc1b4227592c81e9b5").unwrap(),
+        });
+        let _ = bid_set.insert(Bid {
+            txid: sha256d::Hash::from_hex("0000000000000000001234567890000000000000000000000000000000000000").unwrap(),
+            // pubkey corresponding to SecretKey::from_slice(&[0xcc; 32])
+            pubkey: PublicKey::from_str("02b95c249d84f417e3e395a127425428b540671cc15881eb828c17b722a53fc599").unwrap(),
+        });
+        Ok(Some(bid_set))
+    }
+
+    /// Get service chain blockheight
+    fn get_blockheight(&self) -> Result<u64> {
+        if self.return_err {
+            return Err(Error::from(CError::Generic("get_blockheight failed".to_owned())));
+        }
+
+        let mut height = self.height.borrow_mut();
+        *height += 1; // increment height for integration testing
+        Ok(*height - 1) // return previous height
+    }
+}
+
+/// Mock implementation of Storage storing data in memory for testing
+#[derive(Debug)]
+pub struct MockStorage {
+    /// Flag that when set returns error on all inherited methods that return
+    /// Result
+    pub return_err: bool,
+    /// Store requests in memory
+    pub requests: RefCell<Vec<OrderedDocument>>,
+    /// Store bids in memory
+    pub bids: RefCell<Vec<OrderedDocument>>,
+    /// Store challenge responses in memory
+    pub challenge_responses: RefCell<Vec<OrderedDocument>>,
+}
+
+impl MockStorage {
+    /// Create a MockStorage with all flags turned off by default
+    pub fn new() -> Self {
+        MockStorage {
+            return_err: false,
+            requests: RefCell::new(vec![]),
+            bids: RefCell::new(vec![]),
+            challenge_responses: RefCell::new(vec![]),
+        }
+    }
+}
+
+impl Storage for MockStorage {
+    /// Store the state of a challenge request
+    fn save_challenge_state(&self, challenge: &ChallengeState) -> Result<()> {
+        if self.return_err {
+            return Err(Error::from(CError::Generic("save_challenge_state failed".to_owned())));
+        }
+        self.requests.borrow_mut().push(request_to_doc(&challenge.request));
+        for bid in challenge.bids.iter() {
+            self.bids
+                .borrow_mut()
+                .push(bid_to_doc(&Bson::String(challenge.request.txid.to_string()), bid))
+        }
+        Ok(())
+    }
+
+    /// Store responses for a specific challenge request
+    fn save_response(&self, request_hash: sha256d::Hash, ids: &ChallengeResponseIds) -> Result<()> {
+        if self.return_err {
+            return Err(Error::from(CError::Generic("save_response failed".to_owned())));
+        }
+        self.challenge_responses
+            .borrow_mut()
+            .push(challenge_responses_to_doc(&Bson::String(request_hash.to_string()), ids));
+        Ok(())
+    }
+
+    /// Get all challenge responses for a specific request
+    fn get_responses(&self, request_hash: sha256d::Hash) -> Result<Vec<ChallengeResponseIds>> {
+        let mut challenge_responses = vec![];
+        for doc in self.challenge_responses.borrow().to_vec().iter() {
+            if doc.get("request_id").unwrap().as_str().unwrap() == request_hash.to_string() {
+                challenge_responses.push(doc_to_challenge_responses(doc));
+            }
+        }
+        Ok(challenge_responses)
+    }
+
+    /// Get all bids for a specific request
+    fn get_bids(&self, request_hash: sha256d::Hash) -> Result<BidSet> {
+        let mut bids = BidSet::new();
+        for doc in self.bids.borrow().to_vec().iter() {
+            if doc.get("request_id").unwrap().as_str().unwrap() == request_hash.to_string() {
+                let _ = bids.insert(doc_to_bid(doc));
+            }
+        }
+        Ok(bids)
+    }
+
+    /// Get all the requests
+    fn get_requests(&self) -> Result<Vec<ServiceRequest>> {
+        let mut requests = vec![];
+        for doc in self.requests.borrow().to_vec().iter() {
+            requests.push(doc_to_request(doc))
+        }
+        Ok(requests)
+    }
+
+    /// Get request for a specific request txid
+    fn get_request(&self, request_hash: sha256d::Hash) -> Result<Option<ServiceRequest>> {
+        for doc in self.requests.borrow().to_vec().iter() {
+            if doc.get("txid").unwrap().as_str().unwrap() == request_hash.to_string() {
+                return Ok(Some(doc_to_request(doc)));
+            }
+        }
+        Ok(None)
+    }
+}