Qtum adapter to Ethereum JSON RPC

Table of Contents

• Requirements
• Installation
• Pet Shop
• Start server
• Truffle
  • Migration
  • Test SimpleStore
  • Test ERC20
• ERC20 with QtumJS
  • Deploy myToken
  • Methods
    • mint
    • balance
    • transfer
    • logs
    • events
• Interact with QtumJS
• Try to interact with contract
  • Assumption parameters
  • createcontract method
  • gettransaction method
  • gettransactionreceipt method
  • sendtocontract method
  • callcontract method
  • sendtoaddress method
• Support ETH methods
• Known issues

Created by gh-md-toc

Requirements

• Golang
• Docker
• linux commands: make, curl
• NodeJS
• Yarn
• Truffle

Installation

$ go get github.com/dcb9/janus/...
$ cd $GOPATH/src/github.com/dcb9/janus/playground
$ yarn install

Pet Shop

cd playground

make run init-container deploy-contracts serve-pet-shop
# It will open http://localhost:3000 automatically
# Two prefund accounts you can login with:
#   0x7926223070547d2d15b2ef5e7383e541c338ffe9
#   0x2352be3db3177f0a07efbe6da5857615b8c9901d

# clean
make stop clean-qtum-data

Start server

$ make run
$ export ETH_RPC=http://0x7926223070547d2d15b2ef5e7383e541c338ffe9:@localhost:23889

it will init qtum wallet:

• import test wallet
  • qUbxboqjBRp96j3La8D1RYkyqx5uQbJPoW (hex 0x7926223070547d2d15b2ef5e7383e541c338ffe9 )
  • qLn9vqbr2Gx3TsVR9QyTVB5mrMoh4x43Uf (hex 0x2352be3db3177f0a07efbe6da5857615b8c9901d )
• fund two addresses above with uxtos

Truffle

Migration

truffle migrate

Test SimpleStore

$ truffle console
truffle(development)> exec "./truffle-test-simpleStore.js"

exec: store.get()
value:  100

exec: store.set(184)
receipt:  { tx: 'ef3469b6473c700c5775ea22c8003b7b52d720a26af0108a2ef9e2684ee77c11',
  receipt:
   { transactionHash: '0xef3469b6473c700c5775ea22c8003b7b52d720a26af0108a2ef9e2684ee77c11',
     transactionIndex: 1,
     blockHash: '0x5b276c69975588c9bcf6da3dd85187be6ff816d77d6a1bcc67f5a7cb169b79a1',
     blockNumber: 633,
     cumulativeGasUsed: 28604,
     gasUsed: 28604,
     contractAddress: '0xe2266d26dbb997f26327bf64f202061ce709e600',
     logs: [ [Object] ],
     logsBloom: '',
     status: '0x1' },
  logs:
   [ { logIndex: 0,
       transactionIndex: 1,
       transactionHash: '0xef3469b6473c700c5775ea22c8003b7b52d720a26af0108a2ef9e2684ee77c11',
       blockHash: '0x5b276c69975588c9bcf6da3dd85187be6ff816d77d6a1bcc67f5a7cb169b79a1',
       blockNumber: 633,
       address: '0xe2266d26dbb997f26327bf64f202061ce709e600',
       event: 'UpdateValue',
       args: [Object] } ] }

exec: store.get()
value:  184

Test ERC20

truffle(development)> var token

truffle(development)> var acc1 = "0x7926223070547d2d15b2ef5e7383e541c338ffe9"
truffle(development)> var acc2 = "0x2352be3db3177f0a07efbe6da5857615b8c9901d"

truffle(development)> MyToken.deployed().then(function(i) { token = i })

truffle(development)> token.mint(acc1, 100)
{ tx: '7d310aa0bdc0532af9e5fceec296d0a45225dffb3214929f8889d0788de62f80',
  receipt:
   { transactionHash: '0x7d310aa0bdc0532af9e5fceec296d0a45225dffb3214929f8889d0788de62f80',
     transactionIndex: 1,
     blockHash: '0x4735770fe79995cbfbe905241f305373733e310ae1b74d4bb49731930d909c66',
     blockNumber: 638,
     cumulativeGasUsed: 68569,
     gasUsed: 68569,
     contractAddress: '0xa6f433f17ceedaea685fbb9a5d0776c50c84a2cd',
     logs: [ [Object], [Object] ],
     logsBloom: '',
     status: '0x1' },
  logs:
   [ { logIndex: 0,
       transactionIndex: 1,
       transactionHash: '0x7d310aa0bdc0532af9e5fceec296d0a45225dffb3214929f8889d0788de62f80',
       blockHash: '0x4735770fe79995cbfbe905241f305373733e310ae1b74d4bb49731930d909c66',
       blockNumber: 638,
       address: '0xa6f433f17ceedaea685fbb9a5d0776c50c84a2cd',
       event: 'Mint',
       args: [Object] },
     { logIndex: 1,
       transactionIndex: 1,
       transactionHash: '0x7d310aa0bdc0532af9e5fceec296d0a45225dffb3214929f8889d0788de62f80',
       blockHash: '0x4735770fe79995cbfbe905241f305373733e310ae1b74d4bb49731930d909c66',
       blockNumber: 638,
       address: '0xa6f433f17ceedaea685fbb9a5d0776c50c84a2cd',
       event: 'Transfer',
       args: [Object] } ] }

truffle(development)> token.balanceOf(acc1).then(function(res) { console.log(res.toNumber()) })
100

truffle(development)> token.transfer(acc2, 10, {from: acc1})
{ tx: '029cf6599a58df639e3a9a0db08aeaf57b06e7955756d6ed32548cbeca68cb48',
  receipt:
   { transactionHash: '0x029cf6599a58df639e3a9a0db08aeaf57b06e7955756d6ed32548cbeca68cb48',
     transactionIndex: 1,
     blockHash: '0x7d2025a7339d8c0ba39a2c9fddf5b4abdc2df28c096897e1958af51c0243bb56',
     blockNumber: 639,
     cumulativeGasUsed: 51613,
     gasUsed: 51613,
     contractAddress: '0xa6f433f17ceedaea685fbb9a5d0776c50c84a2cd',
     logs: [ [Object] ],
     logsBloom: '',
     status: '0x1' },
  logs:
   [ { logIndex: 0,
       transactionIndex: 1,
       transactionHash: '0x029cf6599a58df639e3a9a0db08aeaf57b06e7955756d6ed32548cbeca68cb48',
       blockHash: '0x7d2025a7339d8c0ba39a2c9fddf5b4abdc2df28c096897e1958af51c0243bb56',
       blockNumber: 639,
       address: '0xa6f433f17ceedaea685fbb9a5d0776c50c84a2cd',
       event: 'Transfer',
       args: [Object] } ] }

truffle(development)> token.balanceOf(acc1).then(function(res) { console.log(res.toNumber()) })
90

truffle(development)> token.balanceOf(acc2).then(function(res) { console.log(res.toNumber()) })
10

ERC20 with QtumJS

Deploy myToken

$ sh deploy-myToken.sh
  + solar deploy contracts/MyToken.sol --gasPrice=0.0000001 '[21000000]' --force
  exec: solc [contracts/MyToken.sol --combined-json bin,metadata --optimize --allow-paths /Users/bob/Documents/golangWorkspace/src/github.com/dcb9/janus/playground]
  cli gasPrice 0.0000001 1e-07
  gasPrice 1e-07 100
  gasPriceWei 100
  txHash: 0x7e4a1297bf5337b75f221351acb9e0540f128e45257588d86079c4ec962c4e51
  contractAddress: 0x60833fd66342d3d031031e4cc1de57a4cd400dd9
  🚀  All contracts confirmed
     deployed contracts/MyToken.sol => 0x60833fd66342d3d031031e4cc1de57a4cd400dd9

Methods

mint

$ node myToken.js mint 0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19 100

mint tx: undefined
{ hash: '0x5ee0463596cf35c00363f10b5781499aa6693e0477965053b5537716e84113c6',
  nonce: '',
  blockHash: '0x',
  blockNumber: '',
  transactionIndex: '',
  from: '',
  to: '',
  value: '0x0',
  gasPrice: '0x64',
  gas: '0x30d40',
  input: '0x40c10f19000000000000000000000000cb3cb8375fe457a11f041f9ff55373e1a5a78d190000000000000000000000000000000000000000000000000000000000000064',
  method: 'mint',
  confirm: [Function: confirm] }
✔ confirm mint
tx receipt: {
  "transactionHash": "0x5ee0463596cf35c00363f10b5781499aa6693e0477965053b5537716e84113c6",
  "transactionIndex": "0x2",
  "blockHash": "0xe7e8523ff95cd2f6663992e2c4e80d354fb20d1c67d6ffbbbb0c1448758f61a1",
  "blockNumber": "0x353f",
  "cumulativeGasUsed": "0x10bdc",
  "gasUsed": "0x10bdc",
  "contractAddress": "0x90f3e8062c8537ee4825fd384caef0260795f8df",
  "logsBloom": "",
  "status": "0x1",
  "from": "0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19",
  "to": "0x90f3e8062c8537ee4825fd384caef0260795f8df",
  "logs": [
    {
      "amount": "64",
      "to": "0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19",
      "type": "Mint"
    },
    {
      "value": "64",
      "from": "0x0000000000000000000000000000000000000000",
      "to": "0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19",
      "type": "Transfer"
    }
  ],
  "rawlogs": [
    {
      "logIndex": "0x0",
      "transactionIndex": "0x2",
      "transactionHash": "0x5ee0463596cf35c00363f10b5781499aa6693e0477965053b5537716e84113c6",
      "blockHash": "0xe7e8523ff95cd2f6663992e2c4e80d354fb20d1c67d6ffbbbb0c1448758f61a1",
      "blockNumber": "0x353f",
      "address": "0x90f3e8062c8537ee4825fd384caef0260795f8df",
      "data": "0x0000000000000000000000000000000000000000000000000000000000000064",
      "topics": [
        "0x0f6798a560793a54c3bcfe86a93cde1e73087d944c0ea20544137d4121396885",
        "0x000000000000000000000000cb3cb8375fe457a11f041f9ff55373e1a5a78d19"
      ]
    },
    {
      "logIndex": "0x1",
      "transactionIndex": "0x2",
      "transactionHash": "0x5ee0463596cf35c00363f10b5781499aa6693e0477965053b5537716e84113c6",
      "blockHash": "0xe7e8523ff95cd2f6663992e2c4e80d354fb20d1c67d6ffbbbb0c1448758f61a1",
      "blockNumber": "0x353f",
      "address": "0x90f3e8062c8537ee4825fd384caef0260795f8df",
      "data": "0x0000000000000000000000000000000000000000000000000000000000000064",
      "topics": [
        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
        "0x0000000000000000000000000000000000000000000000000000000000000000",
        "0x000000000000000000000000cb3cb8375fe457a11f041f9ff55373e1a5a78d19"
      ]
    }
  ]
}

balance

$  node myToken.js balance 0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19

balance: 100

transfer

$ node myToken.js transfer 0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19  0xd66789418ca152f5720b1c8dd04e9ff2f3891f6f 5

transfer tx: undefined
{ hash: '0x0cfe192b3244bc0eb1089a72962d2f164156ff40bea46e160c74fc86b0403d9a',
  nonce: '',
  blockHash: '0x',
  blockNumber: '',
  transactionIndex: '',
  from: '',
  to: '',
  value: '0x0',
  gasPrice: '0x64',
  gas: '0x30d40',
  input: '0xa9059cbb000000000000000000000000d66789418ca152f5720b1c8dd04e9ff2f3891f6f0000000000000000000000000000000000000000000000000000000000000005',
  method: 'transfer',
  confirm: [Function: confirm] }
✔ confirm transfer

logs

$ node myToken.js logs

[
  {
    "logIndex": "0x0",
    "transactionIndex": "0x2",
    "transactionHash": "0x5ee0463596cf35c00363f10b5781499aa6693e0477965053b5537716e84113c6",
    "blockHash": "0xe7e8523ff95cd2f6663992e2c4e80d354fb20d1c67d6ffbbbb0c1448758f61a1",
    "blockNumber": "0x353f",
    "address": "0x90f3e8062c8537ee4825fd384caef0260795f8df",
    "data": "0x0000000000000000000000000000000000000000000000000000000000000064",
    "topics": [
      "0x0f6798a560793a54c3bcfe86a93cde1e73087d944c0ea20544137d4121396885",
      "0x000000000000000000000000cb3cb8375fe457a11f041f9ff55373e1a5a78d19"
    ],
    "event": {
      "amount": "64",
      "to": "0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19",
      "type": "Mint"
    }
  },
  {
    "logIndex": "0x1",
    "transactionIndex": "0x2",
    "transactionHash": "0x5ee0463596cf35c00363f10b5781499aa6693e0477965053b5537716e84113c6",
    "blockHash": "0xe7e8523ff95cd2f6663992e2c4e80d354fb20d1c67d6ffbbbb0c1448758f61a1",
    "blockNumber": "0x353f",
    "address": "0x90f3e8062c8537ee4825fd384caef0260795f8df",
    "data": "0x0000000000000000000000000000000000000000000000000000000000000064",
    "topics": [
      "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
      "0x0000000000000000000000000000000000000000000000000000000000000000",
      "0x000000000000000000000000cb3cb8375fe457a11f041f9ff55373e1a5a78d19"
    ],
    "event": {
      "value": "64",
      "from": "0x0000000000000000000000000000000000000000",
      "to": "0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19",
      "type": "Transfer"
    }
  },
  {
    "logIndex": "0x0",
    "transactionIndex": "0x2",
    "transactionHash": "0x0cfe192b3244bc0eb1089a72962d2f164156ff40bea46e160c74fc86b0403d9a",
    "blockHash": "0x307c14f3a536b62e648566bec19f86270098a3d97d35f0d0cbaed4500150cb80",
    "blockNumber": "0x3544",
    "address": "0x90f3e8062c8537ee4825fd384caef0260795f8df",
    "data": "0x0000000000000000000000000000000000000000000000000000000000000005",
    "topics": [
      "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
      "0x000000000000000000000000cb3cb8375fe457a11f041f9ff55373e1a5a78d19",
      "0x000000000000000000000000d66789418ca152f5720b1c8dd04e9ff2f3891f6f"
    ],
    "event": {
      "value": "5",
      "from": "0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19",
      "to": "0xd66789418ca152f5720b1c8dd04e9ff2f3891f6f",
      "type": "Transfer"
    }
  }
]

events

$ node myToken.js events

Subscribed to contract events
Ctrl-C to terminate events subscription
{ logIndex: '0x0',
  transactionIndex: '0x2',
  transactionHash: '0xe1e8afd1591bb4ef110fe4ddddf7de2bc1c04bbace3eb079cb95c8f8c5214729',
  blockHash: '0xd4e8fcea409a82c303823faee8164a7e5e57531c8cf50d37082fd3c128fb1e62',
  blockNumber: '0x3549',
  address: '0x90f3e8062c8537ee4825fd384caef0260795f8df',
  data: '0x0000000000000000000000000000000000000000000000000000000000000005',
  topics:
   [ '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef',
     '0x000000000000000000000000cb3cb8375fe457a11f041f9ff55373e1a5a78d19',
     '0x000000000000000000000000d66789418ca152f5720b1c8dd04e9ff2f3891f6f' ],
  event:
   Result {
     value: <BN: 5>,
     from: '0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19',
     to: '0xd66789418ca152f5720b1c8dd04e9ff2f3891f6f',
     type: 'Transfer' } }

Interact with QtumJS

$ sh deploy-SimpleStore.sh
  + solar deploy ./contracts/SimpleStore.sol '["1"]' --gasPrice=0.0000001 --force
  exec: solc [./contracts/SimpleStore.sol --combined-json bin,metadata --optimize --allow-paths /Users/bob/Documents/golangWorkspace/src/github.com/dcb9/janus/playground]
  cli gasPrice 0.0000001 1e-07
  gasPrice 1e-07 100
  gasPriceWei 100
  txHash: 0x95472d05243864764211bd8c6d8110fa397bd045cff78d845c1250bdff789bc7
  contractAddress: 0x6997a4803d75964b8d093a939c227a16833d23ad
  🚀  All contracts confirmed
     deployed ./contracts/SimpleStore.sol => 0x6997a4803d75964b8d093a939c227a16833d23ad

$ node test-SimpleStore.js
exec: await simpleStoreContract.call("get", [], {gasPrice: 100})
call { rawResult: '0x0000000000000000000000000000000000000000000000000000000000000001',
  outputs: [ <BN: 1> ],
  logs: [] }

exec: await simpleStoreContract.send("set", [82009999], {gasPrice: 100})
tx { hash: '0x23a0d715ef4fc2ce8bcf79bf1427e3fea6af38905efab9668672e693591f3ee4',
  nonce: '',
  blockHash: '0x',
  blockNumber: '',
  transactionIndex: '',
  from: '',
  to: '',
  value: '0x0',
  gasPrice: '0x64',
  gas: '0x30d40',
  input: '0x60fe47b10000000000000000000000000000000000000000000000000000000004e35f8f',
  method: 'set',
  confirm: [Function: confirm] }

exec: await tx.confirm(0)
receipt { transactionHash: '0x23a0d715ef4fc2ce8bcf79bf1427e3fea6af38905efab9668672e693591f3ee4',
  transactionIndex: '0x2',
  blockHash: '0x6b8273375b3a8dff6701c4151d03aa2e3211fbb3f2bea558d16a762fe0cd2b1a',
  blockNumber: '0x2eaf',
  cumulativeGasUsed: '0x702e',
  gasUsed: '0x702e',
  contractAddress: '0x6997a4803d75964b8d093a939c227a16833d23ad',
  logsBloom: '',
  status: '0x1',
  from: '0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19',
  to: '0x6997a4803d75964b8d093a939c227a16833d23ad',
  logs:
   [ Result {
       from: '0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19',
       _oldValue: <BN: 1>,
       _newValue: <BN: 4e35f8f>,
       type: 'UpdateValue' } ],
  rawlogs:
   [ { logIndex: '0x0',
       transactionIndex: '0x2',
       transactionHash: '0x23a0d715ef4fc2ce8bcf79bf1427e3fea6af38905efab9668672e693591f3ee4',
       blockHash: '0x6b8273375b3a8dff6701c4151d03aa2e3211fbb3f2bea558d16a762fe0cd2b1a',
       blockNumber: '0x2eaf',
       address: '0x6997a4803d75964b8d093a939c227a16833d23ad',
       data: '0x000000000000000000000000cb3cb8375fe457a11f041f9ff55373e1a5a78d190000000000000000000000000000000000000000000000000000000000000001',
       topics: [Array] } ] }

exec: await simpleStoreContract.call("get", [], {gasPrice: 100})
call { rawResult: '0x0000000000000000000000000000000000000000000000000000000004e35f8f',
  outputs: [ <BN: 4e35f8f> ],
  logs: [] }

Try to interact with contract

see: Qtum smart contract

Assumption parameters

Assumed that you have a contract like this:

pragma solidity ^0.4.18;

contract SimpleStore {
  constructor(uint _value) public {
    value = _value;
  }

  function set(uint newValue) public {
    value = newValue;
  }

  function get() public constant returns (uint) {
    return value;
  }

  uint value;
}

so that the bytecode is

solc --optimize --bin contracts/SimpleStore.sol

======= contracts/SimpleStore.sol:SimpleStore =======
Binary:
608060405234801561001057600080fd5b506040516020806100f2833981016040525160005560bf806100336000396000f30060806040526004361060485763ffffffff7c010000000000000000000000000000000000000000000000000000000060003504166360fe47b18114604d5780636d4ce63c146064575b600080fd5b348015605857600080fd5b5060626004356088565b005b348015606f57600080fd5b506076608d565b60408051918252519081900360200190f35b600055565b600054905600a165627a7a7230582049a087087e1fc6da0b68ca259d45a2e369efcbb50e93f9b7fa3e198de6402b810029

constructor parameters is 0000000000000000000000000000000000000000000000000000000000000001

createcontract method

$ curl --header 'Content-Type: application/json' --data \
     '{"id":"10","jsonrpc":"2.0","method":"eth_sendTransaction","params":[{"from":"0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19","gas":"0x6691b7","gasPrice":"0x174876e800","data":"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"}]}' \
     'http://localhost:23889'

{
  "jsonrpc": "2.0",
  "result": "0x6da39dc909debf70a536bbc108e2218fd7bce23305ddc00284075df5dfccc21b",
  "id": "10"
}

gettransaction method

$ curl --header 'Content-Type: application/json' --data \
     '{"id":"10","jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0x6da39dc909debf70a536bbc108e2218fd7bce23305ddc00284075df5dfccc21b"]}' \
     'localhost:23889'

{
  "jsonrpc": "2.0",
  "result": {
    "hash": "0x6da39dc909debf70a536bbc108e2218fd7bce23305ddc00284075df5dfccc21b",
    "nonce": "",
    "blockHash": "0xa5f0db33370d6a3e83ace9ed2b3ff74c29ad70b78427eb67de1d959dfa485085",
    "blockNumber": "0x1c51",
    "transactionIndex": "0x2",
    "from": "0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19",
    "to": "0x1d96667c8de1a6d8a2a393d6518f376ed3239dd3",
    "value": "0x0",
    "gasPrice": "0x28",
    "gas": "0x6691b7",
    "input": "0x608060405234801561001057600080fd5b506040516020806100f2833981016040525160005560bf806100336000396000f30060806040526004361060485763ffffffff7c010000000000000000000000000000000000000000000000000000000060003504166360fe47b18114604d5780636d4ce63c146064575b600080fd5b348015605857600080fd5b5060626004356088565b005b348015606f57600080fd5b506076608d565b60408051918252519081900360200190f35b600055565b600054905600a165627a7a7230582049a087087e1fc6da0b68ca259d45a2e369efcbb50e93f9b7fa3e198de6402b8100290000000000000000000000000000000000000000000000000000000000000001"
  },
  "id": "10"
}

gettransactionreceipt method

$ curl --header 'Content-Type: application/json' --data \
     '{"id":"10","jsonrpc":"2.0","method":"eth_getTransactionReceipt","params":["0x6da39dc909debf70a536bbc108e2218fd7bce23305ddc00284075df5dfccc21b"]}' \
     'localhost:23889'

{
  "jsonrpc": "2.0",
  "result": {
    "transactionHash": "0x6da39dc909debf70a536bbc108e2218fd7bce23305ddc00284075df5dfccc21b",
    "transactionIndex": "0x2",
    "blockHash": "0xa5f0db33370d6a3e83ace9ed2b3ff74c29ad70b78427eb67de1d959dfa485085",
    "blockNumber": "0x1c51",
    "cumulativeGasUsed": "0x1e8a9",
    "gasUsed": "0x1e8a9",
    "contractAddress": "0x1d96667c8de1a6d8a2a393d6518f376ed3239dd3",
    "logs": [],
    "logsBloom": "",
    "status": "0x1"
  },
  "id": "10"
}

sendtocontract method

the ABI code of set method with param '["2"]' is 60fe47b10000000000000000000000000000000000000000000000000000000000000002

$ curl --header 'Content-Type: application/json' --data \
     '{"id":"10","jsonrpc":"2.0","method":"eth_sendTransaction","params":[{"from":"0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19","gas":"0x6691b7","gasPrice":"0x174876e800","to":"0x1d96667c8de1a6d8a2a393d6518f376ed3239dd3","data":"60fe47b10000000000000000000000000000000000000000000000000000000000000002"}]}' \
     'localhost:23889'

{
  "jsonrpc": "2.0",
  "result": "0xb6a315733207992115e8aa002b7b9543d34839f7265f3f5399453ebf54febe71",
  "id": "10"
}

callcontract method

get method's ABI code is 6d4ce63c

$ curl --header 'Content-Type: application/json' --data \
     '{"id":"10","jsonrpc":"2.0","method":"eth_call","params":[{"from":"0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19","gas":"0x6691b7","gasPrice":"0x174876e800","to":"0x1d96667c8de1a6d8a2a393d6518f376ed3239dd3","data":"6d4ce63c"},"latest"]}' \
     'localhost:23889'

{
  "jsonrpc": "2.0",
  "result": "0x0000000000000000000000000000000000000000000000000000000000000002",
  "id": "10"
}

sendtoaddress method

$ curl --header 'Content-Type: application/json' --data \
     '{"id":"10","jsonrpc":"2.0","method":"eth_sendTransaction","params":[{"from":"0xcb3cb8375fe457a11f041f9ff55373e1a5a78d19","gas":"0x6691b7","gasPrice":"0x174876e800","value":"0xffffff", "to": "0xd66789418ca152f5720b1c8dd04e9ff2f3891f6f"}]}' \
     'http://localhost:23889'

{
  "jsonrpc": "2.0",
  "result": "0x978ed14c122dca1669df875e2cc33302a6edd13b7a8a5a30e3a53ef53b53bbf4",
  "id": "10"
}


$ curl --header 'Content-Type: application/json' --data \
       '{"id":"10","jsonrpc":"2.0","method":"eth_getTransactionReceipt","params":["0x978ed14c122dca1669df875e2cc33302a6edd13b7a8a5a30e3a53ef53b53bbf4"]}' \
  'localhost:23889'

// notice: the tx receipt of sendtoaddress is an empty array
{
  "jsonrpc": "2.0",
  "result": [],
  "id": "10"
}

$ curl --header 'Content-Type: application/json' --data \
       '{"id":"10","jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0x978ed14c122dca1669df875e2cc33302a6edd13b7a8a5a30e3a53ef53b53bbf4"]}' \
  'localhost:23889'

// notice: blockNumber, transactionIndex, from, to are empty, because tx receipt of sendtoaddress is an empty array
{
  "jsonrpc": "2.0",
  "result": {
    "hash": "0x978ed14c122dca1669df875e2cc33302a6edd13b7a8a5a30e3a53ef53b53bbf4",
    "nonce": "",
    "blockHash": "0x9a5c002cac26df0bbd77099412dff3bd542741a1bb6e955cc161b76a83b8626f",
    "blockNumber": "",
    "transactionIndex": "",
    "from": "",
    "to": "",
    "value": "0x0",
    "gasPrice": "",
    "gas": "",
    "input": ""
  },
  "id": "10"
}

curl --header 'Content-Type: application/json' --data
'{"id":"10","jsonrpc":"2.0","method":"eth_getLogs","params":[]}'
'localhost:23889'

Support ETH methods

• eth_sendTransaction
• eth_call
• eth_getTransactionByHash
• eth_getTransactionReceipt
• eth_blockNumber
• net_version
  • returns string // current network name as defined in BIP70 (main, test, regtest)
• eth_getLogs
  • topics is not supported yet
  • tags, "pending" and "earliest", are unsupported
• eth_accounts
• eth_getCode
• eth_newFilter
• eth_newBlockFilter
• eth_getFilterChanges
• eth_uninstallFilter
• eth_getFilterLogs
• eth_getBlockByNumber
• eth_estimateGas
• eth_getBalance

Known issues

• eth_getTransactionReceipt
  • logsBloom is an empty string
  • result will be an empty array if the txid of the transaction is a transfer operation
• eth_getTransactionByHash
  • nonce is an empty string
  • blockNumber, transactionIndex, from, to, value will be empty, if the txid of the transaction is a transfer operation
• eth_accounts
  • only return addresses which are linked to default account