@coolwallet/trx NPM

CoolWallet Tron (TRX) SDK

Typescript library with support for the integration of TRX for third party application, include the functionalities of generation of addresses, signed transactions, and staking.

Install

npm install @coolwallet/trx

Usage

import TRX from '@coolwallet/trx';
import { crypto } from '@coolwallet/core';
import { createTransport } from '@coolwallet/transport-web-ble';

const trx = new TRX();

const transport = await createTransport();

const { privateKey: appPrivateKey } = crypto.key.generateKeyPair();

const appId = 'appId that had been registered by wallet';

const address = await trx.getAddress(transport, appPrivateKey, appId, 0);

const normalTransaction = {
    refBlockBytes: "c75b",
    refBlockHash: "7cfc890c6e4d7a15",
    expiration: 1583304414000,
    timestamp: 1583268416080,
    contract: {
        ownerAddress: "41bf97a54f4b829c4e9253b26024b1829e1a3b1120",
        toAddress: "41859009fd225692b11237a6ffd8fdba2eb7140cca",
        amount: 100000000
    }
};

const signTxData = {
  transport,
  appPrivateKey,
  appId,
  addressIndex: 0,
  transaction: normalTransaction
}

const normalTx = await trx.signTransaction(signTxData);

const trc20Transaction = {
    refBlockBytes: "5a40",
    refBlockHash: "12cd29483be4900a",
    expiration: 1638339660000,
    timestamp: 1638339602030,
    contract: {
        ownerAddress: "411634b4103bd6feb3a9f9e9eb937f484c3c8b0046",
        contractAddress: "41a614f803b6fd780986a42c78ec9c7f77e6ded13c",
        receiverAddress: "4139e6a453301f6d5d228966dd8d742f1f861bd40f",
        amount: 2000000
    }
    feeLimit: 150000000,
    option: {
        symbol: "USDT",
        decimals: 6
    }
}

const trc20SignTxData = {
  transport,
  appPrivateKey,
  appId,
  addressIndex: 0,
  transaction: trc20Transaction
}

const trc20Tx = await trx.signTRC20Transfer(trc20SignTxData);

Methods

getAddress

Description

The address generated is compatible to BIP44 with account and change set to 0, which means calling getAddress with addressIndex = i will get the address of folllowing BIP44 path:

m/44'/195'/0'/0/{i}

In the design of current hardware, we only support path m/44'/195'/0'/0/{i} for speed optimization. This might change in the future and we will then open a more general interface to deal with custom path.

async getAddress(
    transport: type.Transport,
    appPrivateKey: string,
    appId: string,
    addressIndex: number
): Promise<string>

Arguments

Arg	Description	Type	Required
transport	Object to communicate with CoolWallet device	Transport	True
appPrivateKey	Private key for the connected application	string	True
appId	ID for the connected application	string	True
addressIndex	The from address index in BIP44 derivation	number	True

Sign Transaction

Description

CoolWallet currently support various signing methods and contracts based on the type of the transaction. The SignTxData and Transaction arguments are the essentail data fields for TRX transactions. Depends on the type of transaction, the extended arguments may vary.

SignTxData Arguments

Arg	Description	Type	Required
transport	Object to communicate with CoolWallet device	Transport	True
appPrivateKey	Private key for the connected application	string	True
appId	ID for the connected application	string	True
addressIndex	The from address index in BIP44 derivation	number	True
confirmCB	Callback of confirmation data to the connected application	Function	False
authorizedCB	Callback of authorized transaction data to the connected application	Function	False

Transaction Arguments

Arg	Description	Type	Required
refBlockBytes	Reference to the bytes of the hash of the latest block	string	True
refBlockHash	Reference to the bytes of the height of the latest block	string	True
expiration	The time period between transaction creation and broadcast	number	True
timestamp	Timestamps for the transaction	number	True

The extended arguments may vary depend on the type of the transaction. The transaction can be for transfering (signTransaction, signTRC20Transfer) or staking (signFreeze, signUnfreeze, signVoteWitness, signWithdrawBalance) purposes.

signTransaction

Description

Sign TRX Transaction.

async signTransaction(signTxData: type.NormalTradeData): Promise<string>

NormalContract Arguments

Arg	Description	Type	Required
ownerAddress	The from address	string	True
toAddress	The to address	string	True
amount	The amount to transfer	number \| string	True

signTRC20Transfer

Description

Sign TRC20 Transfering Transaction

async signTRC20Transfer(signTxData: type.TRC20TransferData): Promise<string>

TRC20TransferContract Arguments

Arg	Description	Type	Required
ownerAddress	The from address	string	True
contractAddress	Address of the TRC-20 contract	string	True
receiverAddress	The to address	string	True
amount	The amount to transfer	number \| string	True