GoLang_Blockchain

Blockchain made in Go with Proof of Work (PoW) using sha256

git clone https://github.com/lukzhang/GoLang_Blockchain.git

Open 3 terminals and go into root folder. We are going have 3 nodes. One will create a genesis block, one will mine and check for transactions, and the other will send a token to another wallet

cd golang-blockchain

In first terminal

set NODE_ID=3000

go run main.go createwallet

In second terminal

set NODE_ID=4000

go run main.go createwallet

In third terminal

set NODE_ID=5000

go run main.go createwallet

In first terminal

go run main.go createblockchain -address TERMINAL1 WALLET

Go into /tmp and copy 'blocks_3000' folder for 4000 and 5000

cd tmp

cp -r blocks_3000 blocks_4000

cp -r blocks_3000 blocks_5000

cp -r blocks_3000 blocks_gen

Go back to root folder and give second account 10 tokens by mining

cd ..

go run main.go send -from TERMINAL1 WALLET -to TERMINAL2 WALLET -amount 10 -mine

start node

go run main.go startnode

In second terminal, start node as well. You will see the blocks being added to it syncs. Hence, terminal 1 contains a lead node in this case and is not completely decentralized

go run main.go startnode

In third terminal, start miner

go run main.go startnode -miner TERMINAL3 WALLET

In second terminal, ctrl+c to stop the node and send a transaction from the 10 tokens it received earlier

go run main.go send -from TERMINAL2 WALLET -to TERMINAL3 WALLET -amount 3

You will see 3 tokens being sent as the miner mines a block. Terminal 1 which is running the node will show the block hash that was mined

In second terminal, you can sync to the blockchain by running the node again

go run main.go startnode

You can view the blockchain by printing if you wish

go run main.go printchain