Crosschain

This mode of the SDK will initialize Ethereum, Bitcoin and an L2 to work with tBTC. Compatible with mainnet and testnet.

Currently only functional with Arbitrum, soon more blockchains will be available.

Mainnet

The SDK addresses it by exposing the TBTC.initializeMainnet function. That function:

• Takes an Ethers signer or provider as a parameter and uses it to interact with tBTC contracts deployed on Ethereum mainnet

• Needs to receive as a second parameter the value true to activate the crosschain mode.

• Automatically configures an Electrum Bitcoin client to communicate with the Bitcoin mainnet (communication is done through a set of pre-configured Electrum servers)

The following code snippet presents the usage of this function:

import * as ethers from "ethers"
import { TBTC } from "@keep-network/tbtc-v2.ts"

// Create an Ethers provider. Pass the URL of an Ethereum and Arbitrum mainnet node.
// For example, Alchemy or Infura.
const ethProvider = new ethers.providers.JsonRpcProvider("...")
const arbProvider = new ethers.providers.JsonRpcProvider("...")

// Create an Ethers signer. Pass the private key and the above provider.
const arbSigner = new ethers.Wallet("...", provider)

// If you want to initialize the SDK, it is enough to pass the provider.
const sdk = await TBTC.initializeMainnet(ethProvider, true)

// Initialize cross-chain functionality for TBTC on Arbitrum
await sdk.initializeCrossChain("Arbitrum", arbSigner);

// The SDK will be ready to launch read and write in Arbitrum. 

The above code snippet presents just one way of creating an Ethers signer/provider. Please refer Ethers v5 documentation to learn more.

Testnet

The SDK addresses it by exposing the TBTC.initializeSepolia function. That function:

• Takes an Ethers signer or provider as a parameter and uses it to interact with tBTC contracts deployed on Ethereum Sepolia

• Needs to receive as a second parameter the value true to activate the crosschain mode.

• Automatically configures an Electrum Bitcoin client to communicate with the Bitcoin testnet (communication is done through a set of pre-configured Electrum servers)

The usage of this function is exactly the same as for the previous TBTC.initializeMainnet function.

import * as ethers from "ethers"
import { TBTC } from "@keep-network/tbtc-v2.ts"

// Create an Ethers provider. Pass the URL of an Ethereum and Arbitrum testnet node.
// For example, Alchemy or Infura.
const ethProvider = new ethers.providers.JsonRpcProvider("...")
const arbProvider = new ethers.providers.JsonRpcProvider("...")

// Create an Ethers signer. Pass the private key and the above provider.
const arbSigner = new ethers.Wallet("...", provider)

// If you want to initialize the SDK, it is enough to pass the provider.
const sdk = await TBTC.initializeSepolia(ethProvider, true)

// Initialize cross-chain functionality for TBTC on Arbitrum
await sdk.initializeCrossChain("Arbitrum", arbSigner);

// The SDK will be ready to launch read and write in Arbitrum.