blockchain.md

Blockchain

getBestBlockHash

Returns the hash of the best (tip) block in the longest blockchain.

Result

hex Promise<string>: the block hash hex encoded

Examples

(async () => {
  try {
    let getBestBlockHash = await bitbox.Blockchain.getBestBlockHash();
    console.log(getBestBlockHash);
  } catch(error) {
   console.error(error)
  }
})()
// 241decef88889efac8e6ce428a8ac696fdde5972eceed97e1fb58d6106af31d5

getBlock

If verbose is false, returns a string that is serialized, hex-encoded data for block 'hash'. If verbose is true, returns an Object with information about block hash.

Arguments

1. blockhash string: The block hash
2. verbose boolean optional: true for a json object, false for the hex encoded data

Result

block Promise<BlockDetails>

Examples

(async () => {
  try {
    let getBlock = await bitbox.Blockchain.getBlock("00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09");
    console.log(getBlock);
  } catch(error) {
   console.error(error)
  }
})()

// { hash: '00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09',
// confirmations: 528236,
// size: 216,
// height: 1000,
// version: 1,
// versionHex: '00000001',
// merkleroot: 'fe28050b93faea61fa88c4c630f0e1f0a1c24d0082dd0e10d369e13212128f33',
// tx:
//  [ 'fe28050b93faea61fa88c4c630f0e1f0a1c24d0082dd0e10d369e13212128f33' ],
// time: 1232346882,
// mediantime: 1232344831,
// nonce: 2595206198,
// bits: '1d00ffff',
// difficulty: 1,
// chainwork: '000000000000000000000000000000000000000000000000000003e903e903e9',
// previousblockhash: '0000000008e647742775a230787d66fdf92c46a48c896bfbc85cdc8acc67e87d',
// nextblockhash: '00000000a2887344f8db859e372e7e4bc26b23b9de340f725afbf2edb265b4c6' }

getBlockchainInfo

Returns an object containing various state info regarding blockchain processing.

Result

block Promise<BlockchainInfo>

Examples

(async () => {
  try {
    let getBlockchainInfo = await bitbox.Blockchain.getBlockchainInfo();
    console.log(getBlockchainInfo);
  } catch(error) {
   console.error(error)
  }
})()

// { chain: 'main',
// blocks: 529235,
// headers: 529235,
// bestblockhash: '00000000000000000108641af52e01a447b1f9d801571f93a0f20a8cbf80c236',
// difficulty: 702784497476.8376,
// mediantime: 1525727823,
// verificationprogress: 0.9999892037620548,
// chainwork: '00000000000000000000000000000000000000000099f5e1cf7d4e462a493a51',
// pruned: false,
// softforks:
//  [ { id: 'bip34', version: 2, reject: [Object] },
//    { id: 'bip66', version: 3, reject: [Object] },
//    { id: 'bip65', version: 4, reject: [Object] } ],
// bip9_softforks:
//  { csv:
//     { status: 'active',
//       startTime: 1462060800,
//       timeout: 1493596800,
//       since: 419328 } } }

getBlockCount

Returns the number of blocks in the longest blockchain.

Result

n Promise<number>

Examples

(async () => {
  try {
    let getBlockCount = await bitbox.Blockchain.getBlockCount();
    console.log(getBlockCount);
  } catch(error) {
   console.error(error)
  }
})()
// 529235

getBlockHash

Returns hash of block in best-block-chain at height provided.

Arguments

1. height number optional

Result

hash Promise<string> The block hash

Examples

(async () => {
  try {
    let getBlockHash = await bitbox.Blockchain.getBlockHash([0]);
    console.log(getBlockHash);
  } catch(error) {
   console.error(error)
  }
})()
// [ '000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f' ]

getBlockHeader

If verbose is false, returns a string that is serialized, hex-encoded data for blockheader 'hash'. If verbose is true, returns an Object with information about blockheader hash.

Arguments

1. hashes string | string[]
2. verbose boolean optional: true for a json object, false for the hex encoded data.

Result

blockHeader Promise<BlockHeader> The block header

Examples

(async () => {
  try {
    let getBlockHeader = await bitbox.Blockchain.getBlockHeader(["00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09"]);
    console.log(getBlockHeader);
  } catch(error) {
   console.error(error)
  }
})()

// [{ hash: '00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09',
// confirmations: 528236,
// height: 1000,
// version: 1,
// versionHex: '00000001',
// merkleroot: 'fe28050b93faea61fa88c4c630f0e1f0a1c24d0082dd0e10d369e13212128f33',
// time: 1232346882,
// mediantime: 1232344831,
// nonce: 2595206198,
// bits: '1d00ffff',
// difficulty: 1,
// chainwork: '000000000000000000000000000000000000000000000000000003e903e903e9',
// previousblockhash: '0000000008e647742775a230787d66fdf92c46a48c896bfbc85cdc8acc67e87d',
// nextblockhash: '00000000a2887344f8db859e372e7e4bc26b23b9de340f725afbf2edb265b4c6' }]

getChainTips

Return information about all known tips in the block tree, including the main chain as well as orphaned branches.

Result

chainTips Promise<ChainTip[]>

Examples

(async () => {
  try {
    let getChainTips = await bitbox.Blockchain.getChainTips();
    console.log(getChainTips);
  } catch(error) {
   console.error(error)
  }
})()

// [ { height: 529235,
//   hash: '00000000000000000108641af52e01a447b1f9d801571f93a0f20a8cbf80c236',
//   branchlen: 0,
//   status: 'active' },
// { height: 527442,
//   hash: '0000000000000000014cbf7b7aa12e52dd97db4b1ba5f39dccae37773af9272e',
//   branchlen: 1,
//   status: 'invalid' },
// { height: 526861,
//   hash: '00000000000000000225b070818bbafd95842ecbd25edf39bff54a7aa5c8fd10',
//   branchlen: 1,
//   status: 'valid-headers' } ]

getDifficulty

Returns the proof-of-work difficulty as a multiple of the minimum difficulty.

Result

n Promise<number>: the proof-of-work difficulty as a multiple of the minimum difficulty.

Examples

(async () => {
  try {
    let getDifficulty = await bitbox.Blockchain.getDifficulty();
    console.log(getDifficulty);
  } catch(error) {
   console.error(error)
  }
})()

// 702784497476.8376

getMempoolEntry

Returns mempool data for given transaction

Arguments

• txids (required):
  • string: TXID currently in mempool
  • string[]: Array of TXIDs

Result

• entry:
  • Promise<any>: containing details about the single mempool entry.
  • Promise<any[]>: Array of Objects with details about mempool entries.

Examples

(async () => {
  try {
    let getMempoolEntry = await bitbox.Blockchain.getMempoolEntry("fe28050b93faea61fa88c4c630f0e1f0a1c24d0082dd0e10d369e13212128f33");
    console.log(getMempoolEntry);
  } catch(error) {
   console.error(error)
  }
})()

// {
//   "size": 372,
//   "fee": 0.00000374,
//   "modifiedfee": 0.00000374,
//   "time": 1547738850,
//   "height": 565716,
//   "startingpriority": 26524545.3974359,
//   "currentpriority": 26524545.3974359,
//   "descendantcount": 1,
//   "descendantsize": 372,
//   "descendantfees": 374,
//   "ancestorcount": 1,
//   "ancestorsize": 372,
//   "ancestorfees": 374,
//   "depends": []
// }

(async () => {
  try {
    let getMempoolEntry = await bitbox.Blockchain.getMempoolEntry([
      "fe28050b93faea61fa88c4c630f0e1f0a1c24d0082dd0e10d369e13212128f33",
      "defea04c38ee00cf73ad402984714ed22dc0dd99b2ae5cb50d791d94343ba79b"
      ]);
    console.log(getMempoolEntry);
  } catch(error) {
   console.error(error)
  }
})()

// [
//   {
//     "size": 372,
//     "fee": 0.00000374,
//     "modifiedfee": 0.00000374,
//     "time": 1547738850,
//     "height": 565716,
//     "startingpriority": 26524545.3974359,
//     "currentpriority": 26524545.3974359,
//     "descendantcount": 1,
//     "descendantsize": 372,
//     "descendantfees": 374,
//     "ancestorcount": 1,
//     "ancestorsize": 372,
//     "ancestorfees": 374,
//     "depends": []
//   },
//   {
//     "size": 372,
//     "fee": 0.00000374,
//     "modifiedfee": 0.00000374,
//     "time": 1547738850,
//     "height": 565716,
//     "startingpriority": 26524545.3974359,
//     "currentpriority": 26524545.3974359,
//     "descendantcount": 1,
//     "descendantsize": 372,
//     "descendantfees": 374,
//     "ancestorcount": 1,
//     "ancestorsize": 372,
//     "ancestorfees": 374,
//     "depends": []
//   }
// ]

getMempoolInfo

Returns details on the active state of the TX memory pool.

Result

entry Promise<MempoolInfo>

Examples

(async () => {
  try {
    let getMempoolInfo = await bitbox.Blockchain.getMempoolInfo();
    console.log(getMempoolInfo);
  } catch(error) {
   console.error(error)
  }
})()

// { size: 257,
// bytes: 98257,
// usage: 365840,
// maxmempool: 300000000,
// mempoolminfee: 0 }

getRawMempool

Returns all transaction ids in memory pool as a json array of string transaction ids.

Arguments

1. verbose boolean optional: True for a json object, false for array of transaction ids

Result

rawMemPool Promise<string[] | object[]>

Examples

(async () => {
  try {
    let getRawMempool = await bitbox.Blockchain.getRawMempool(true);
    console.log(getRawMempool);
  } catch(error) {
   console.error(error)
  }
})()

// [  {'2ae541af20db6f2b50410f418af56e349d08877d685f6cf54df54658e892db7a':
//  { size: 237,
//    fee: 0.00000238,
//    modifiedfee: 0.00000238,
//    time: 1525732015,
//    height: 529235,
//    startingpriority: 0,
//    currentpriority: 0,
//    descendantcount: 10,
//    descendantsize: 2376,
//    descendantfees: 2380,
//    ancestorcount: 3,
//    ancestorsize: 712,
//    ancestorfees: 714,
//    depends:
//     [ 'e25682caafc7000645d59f4c11d8d594b2943979b9d8fafb9f946e2b35c21b7e' ] },]

getTxOut

Returns details about an unspent transaction output.

Arguments

1. txid string: The transaction id
2. n number: vout number
3. include_mempool boolean optional: Whether to include the mempool

Result

txOut Promise<TxOut | null>

Examples

(async () => {
  try {
    let getTxOut = await bitbox.Blockchain.getTxOut("e25682caafc7000645d59f4c11d8d594b2943979b9d8fafb9f946e2b35c21b7e", 1);
    console.log(getTxOut);
  } catch(error) {
   console.error(error)
  }
})()

// null

getTxOutProof

Returns a hex-encoded proof that "txid" was included in a block.

Arguments

• txids:
  • string: A single string containing a txid.
  • string[]

Result

• proof:
  • Promise<string>: A string that is a serialized, hex-encoded data for the proof.
  • Promise<string[]>: Array of strings that are a serialized, hex-encoded data for the proof.

Examples

(async () => {
  try {
    let getTxOutProof = await bitbox.Blockchain.getTxOutProof("e25682caafc7000645d59f4c11d8d594b2943979b9d8fafb9f946e2b35c21b7e");
    console.log(getTxOutProof);
  } catch(error) {
   console.error(error)
  }
})()

// "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"

(async () => {
  try {
    let getTxOutProof = await bitbox.Blockchain.getTxOutProof([
      "e25682caafc7000645d59f4c11d8d594b2943979b9d8fafb9f946e2b35c21b7e",
      "d16662463fd98eb96c8f6898d58a4461ac3d0120f4d0aea601d72b37759f261c"
    ]);
    console.log(getTxOutProof);
  } catch(error) {
   console.error(error)
  }
})()

// [
//   "010000007de867cc8adc5cc8fb6b898ca4462cf9fd667d7830a275277447e60800000000338f121232e169d3100edd82004dc2a1f0e1f030c6c488fa61eafa930b0528fe021f7449ffff001d36b4af9a0100000001338f121232e169d3100edd82004dc2a1f0e1f030c6c488fa61eafa930b0528fe0101",
//   "010000007de867cc8adc5cc8fb6b898ca4462cf9fd667d7830a275277447e60800000000338f121232e169d3100edd82004dc2a1f0e1f030c6c488fa61eafa930b0528fe021f7449ffff001d36b4af9a0100000001338f121232e169d3100edd82004dc2a1f0e1f030c6c488fa61eafa930b0528fe0101"
// ]

verifyTxOutProof

Verifies that a proof points to a transaction in a block, returning the transaction it commits to and throwing an RPC error if the block is not in our best chain

Arguments

• proof (required):
  • string: The hex-encoded proof generated by gettxoutproof
  • string[]: The hex-encoded proof generated by gettxoutproof

Result

• txids Promise<string[]>: The txid(s) which the proof commits to, or empty array if the proof is invalid

Examples

(async () => {
  try {
    const proof = "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"
    let verifyTxOutProof = await bitbox.Blockchain.verifyTxOutProof(proof);
    console.log(verifyTxOutProof);
  } catch(error) {
   console.error(error)
  }
})()

// [
//   "03f69502ca32e7927fd4f38c1d3f950bff650c1eea3d09a70e9df5a9d7f989f7"
// ]

(async () => {
  try {
    const proof = "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"
    let verifyTxOutProof = await bitbox.Blockchain.verifyTxOutProof([proof, proof]);
    console.log(verifyTxOutProof);
  } catch(error) {
   console.error(error)
  }
})()

// [
//   "03f69502ca32e7927fd4f38c1d3f950bff650c1eea3d09a70e9df5a9d7f989f7",
//   "03f69502ca32e7927fd4f38c1d3f950bff650c1eea3d09a70e9df5a9d7f989f7"
// ]

Interfaces

MempoolInfo

{
  size: number
  bytes: number
  usage: number
  maxmempool: number
  mempoolminfee: number
}

BlockchainInfo

{
  chain: string
  blocks: number
  headers: number
  bestblockhash: string
  difficulty: number
  mediantime: number
  verificationprogress: number
  chainwork: string
  pruned: boolean
  softforks: object[]
  bip9_softforks: object
}

BlockHeader

{
  hash: string
  confirmations: number
  height: number
  version: number
  versionHex: string
  merkleroot: string
  time: number
  mediantime: number
  nonce: number
  bits: string
  difficulty: number
  chainwork: string
  previousblockhash: string
  nextblockhash: string
}

ChainTip

{
  height: number
  hash: string
  branchlen: number
  status: string
}

TxOut

{
  bestblock: string
  confirmations: number
  value: number
  scriptPubKey: {
    asm: string
    hex: string
    reqSigs: number
    type: string
    addresses: string[]
  }
  version: number
  coinbase: boolean
}