Submit cancellation

post

Body

all ofOptional

Represents the cancellation transaction request to/from REST.

This type is used to decode the cancellation request from REST.

Responses

200Success

application/json

400

Client error

application/json

404

Resource not found

application/json

408

Request timeout

application/json

422

Business logic error

application/json

500

Internal server error

application/json

post

HTTPcURLJavaScriptPython

POST /v1/transactions/cancellation HTTP/1.1
Host: api.testnet.1money.network
Content-Type: application/json
Accept: */*
Content-Length: 214

{
  "chain_id": 1,
  "nonce": 1,
  "signature": {
    "r": "72956732934625920503481762689501378577921804342307439094906376029324416116949",
    "s": "29902520081700531224291681396692026253288382272435451874524203378285409371412",
    "v": "1"
  }
}

{
  "hash": "0xf55f9525be94633b56f954d3252d52b8ef42f5fd5f9491b243708471c15cc40c"
}

The following code segment demonstrates a Golang implementation for transaction cancellation.

import (
	"fmt"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/crypto"
	"github.com/ethereum/go-ethereum/rlp"
	"math/big"
)

var privateKey = "01833a126ec45d0191519748146b9e35647aab7fed28de1c8e17824970f964a3"

type CancellationMessage struct {
	ChainID *big.Int
	Nonce   uint64
}

type Signature struct {
	R string
	S string
	V uint64
}

func SignMessage(msg *CancellationMessage) (*Signature, error) {
	encoded, err := rlp.EncodeToBytes(msg)
	if err != nil {
		return nil, err
	}
	hash := crypto.Keccak256(encoded)
	fmt.Printf("Signature Hash: %s\n", common.BytesToHash(hash))
	key, err := crypto.HexToECDSA(privateKey)
	if err != nil {
		return nil, err
	}
	sign, err := crypto.Sign(hash, key)
	if err != nil {
		return nil, err
	}
	fmt.Printf("Signature: 0x%x\n", sign)
	fmt.Printf("Raw bytes: %v\n", sign)
	r := sign[:32]
	s := sign[32:64]
	v := sign[64]
	return &Signature{
		R: common.BytesToHash(r).Hex(),
		S: common.BytesToHash(s).Hex(),
		V: uint64(v),
	}, nil
}

func main() {
	cancel := &CancellationMessage{
		ChainID: big.NewInt(1212101),
		Nonce:   0,
	}
	signature, err := SignMessage(cancel)
	if err != nil {
		panic(fmt.Sprintf("sign cancel msg error: %v", err))
	}
	fmt.Printf("Cancellation msg Signature: %v\n", signature)
}