@getsafle/bitcoin-wallet-controller

bitcoin-wallet-controller

This repository contains BTCHdKeyring class to create Bitcoin wallet from Safle Vault. The address type currently created is p2phk

Usecase

We will be using BTCHdKeyring class to initialize the wallet and then utilize the provided functions to perform the required tasks.
The class initialization is done in the following way.

const btcWallet = new BTCHdKeyring(`mnemonic`)

mnemonic is the BIP-39 key phrase to generate the wallet.

Once we initialize the class, we can utilize the provided functions.

The wallet have the following functions:

generateWallet()

This function is used to generate the Bitcoin wallet and set the 0th address as the default address.
parameters: -

wallet_object: BIP32 object

returns: {wallet: wallet_object, address: string} // wallet address

exportPrivateKey()

This function is used to export the private key for the generated address.
parameters: -
returns: {privateKey: string} // address private key

signTransaction(transaction: TransactionObj , connectionUrl?: string )

This function is used to sign a transaction off-chain and then send it to the network.
Transactions type is as below:

1. BTC transfer:
   Trasaction to transfer BTC from one wallet/address to another.
   The transaction object is of the following type:

TransactionObj: {
    data: {
        to, // destination address
        amount, // amount
    }
}

parameters:

name: transaction,
type: TransactionObj, // refer to the above trancationObj types.

name: connectionUrl, // BTC network URL
type: string,
default: MAINNET (undefined)
optional

returns: {signedTransaction: string} hex_string of signed raw transaction

signMessage(message: string, connectionUrl?: string)

This function is used to sign a message.
parameters:

name: message
type: string

name: connectionUrl, // BTC network {TESTNET | MAINNET}
type: string,
default: MAINNET (undefined)
optional

returns: {signedMessage: string} // signed message hex string

getAccounts()

This function is used to get the wallet address.

parameters: -
returns: {address: string} // wallet address

sendTransaction(rawTransaction: Buffer | UInt8Array , connectionUrl?: string)

This function is used send the signed transaction onto the chain.
parameters:

name: rawTransaction, // signed raw transaction (got from signedTransaction())
type: Buffer | UInt8Array

name: connectionUrl, // BTC network {TESTNET | MAINNET}
type: string,
default: MAINNET (undefined)
optional

returns: {transactionDetails : Object} // transaction details with transaction hash

getFee(connectionUrl?: string)

This function is used to get the transaction fees.

parameters: -
returns: {transactionFees: integer} // transaction fees

Note

We are using https://sochain.com API to fetch and publish data on bitcoin network.