Chainslib

This TypeScript library is designed to provide a unified interface for working with multiple blockchain networks, allowing developers to interact with various blockchain chains seamlessly. It supports a wide range of features and blockchain networks, making it a versatile tool for blockchain development.

Features

This library offers the following key features:

Hardware Wallet Support: It provides integration with Ledger and Trezor hardware wallets for enhanced security in blockchain transactions.

Wallet Types: You can work with both seed phrase and private key wallets for managing your blockchain assets.

Standardized RPC Interface: The library offers a consistent RPC interface for fetching blockchain information and broadcasting transactions across different supported chains.

Supported Chains

This library currently supports the following blockchain networks: // example for fallback data source // example with custom provider

Chain	Provider	Datasources	Signers	Custom chain
Bitcoin	Bitcoin	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	No
Ethereum	EVM	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
BNB Smart Chain	EVM	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Polygon	EVM	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Avalanche	EVM	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Fantom	EVM	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Arbitrum	EVM	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Aurora	EVM	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Canto EVM	EVM	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Optimism	EVM	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Klaytn	EVM	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Cronos	EVM	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
BitcoinCash	BitcoinCash	Indexer	SeedPhrase, PrivateKey, Ledger, Trezor	No
Cosmos Hub	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Osmosis	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Axelar	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Juno	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Crescent	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Kava	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Stargaze	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Akash	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Cronos	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Kujira	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Stride	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Mars	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Terra	Cosmos	Indexer, Chain	SeedPhrase, PrivateKey, Ledger, Trezor	Yes
Dogecoin	Dogecoin	Indexer	SeedPhrase, PrivateKey, Ledger, Trezor	No
Litecoin	Litecoin	Indexer	SeedPhrase, PrivateKey, Ledger, Trezor	No
Solana	Solana	Indexer, Chain	SeedPhrase, PrivateKey, Ledger	No
ThorChain	ThorChain	Indexer, Chain	SeedPhrase, Ledger	No
MayaChain	ThorChain	Indexer, Chain	SeedPhrase, Ledger	No
Tron	Tron	Indexer, Chain	SeedPhrase, PrivateKey, Ledger	No

Installation

To use this library in your TypeScript project, you can install it via npm or yarn:

npm install @xdefi-tech/chains
# or
yarn add @xdefi-tech/chains

Environment Setup

The NETWORKED_QUERIES environment variable is used to control the behavior of network requests in tests. By default, NETWORKED_QUERIES is set to 0, which means that all network requests are mocked, allowing tests to run without actual network dependencies. This ensures that tests are faster, more reliable, and not affected by external factors such as network latency or availability of external services. Setting NETWORKED_QUERIES to 1 enables real network requests, allowing tests to interact with actual external services. This can be useful for integration tests where end-to-end verification of network interactions is required. To configure this setting, simply add NETWORKED_QUERIES=0 or NETWORKED_QUERIES=1 to your .env file as needed.

Manifest

Each provider may have different manifests, but they share common fields. For more details, please refer to the README of the respective provider.

• name: The name of the blockchain network. Uses only for display name to user
• description: A brief description or additional information about the blockchain network.
• rpcURL: The URL endpoint for the Remote Procedure Call (RPC) interface of the blockchain network.
• chainSymbol: The symbol representing the blockchain network.
• blockExplorerURL: The URL of a block explorer service specific to the blockchain. Block explorers allow users to view details about blocks, transactions, addresses, and other blockchain-related data.
• chainId: The unique identifier of the blockchain network.
• chain: The name of the blockchain network. If you are using IndexerDataSource, it must be obtained from the registry.
• decimals: The number of decimal places used by the native currency of the blockchain network.
• feeGasStep: An object containing gas step values for different fee levels (high, medium, low) used in transactions.

Usage

Here's a basic example of how to use this library in your TypeScript application:

1. Import Required Modules

import { BitcoinProvider } from './chain.provider';
import LedgerSigner from './ledger.signer';
import { MsgBody, Msg } from '../msg';

2. Initialize Bitcoin Provider

Initialize the Bitcoin provider with the necessary configurations:

const provider = new BitcoinProvider(new IndexerDataSource(BITCOIN_MANIFEST));

3. Create Transaction Input

Define the transaction input data, including the sender (from), recipient (to), and the amount to send.

const txInput: MsgBody = {
  from: 'FROM ADDRESS',
  to: 'TO ADDRESS',
  amount: 0.000001,
};

4. Create a Transaction Message

Create a transaction message using the provider:

const message: Msg = provider.createMsg(txInput);

5. Sign the Transaction with Ledger

Use the LedgerSigner to sign the transaction. Provide the message and the derivation path:

const transport = await Transport.create();
const signer = new LedgerSigner(transport);
const derivationPath = "m/84'/0'/0'/0/0";

await signer.sign(message, derivationPath);
// finally close
transport.close();

6. Broadcast the Transaction

Now that the transaction is signed, you can broadcast it to the Bitcoin network using the BitcoinProvider. This step assumes that the transaction is already signed within the message.

await provider.broadcast([message]);

Fallback datasource

• If an error occurs while fetching data from the primary data source, the FallbackDataSource will automatically switch to one of the alternative data sources configured in the constructor.
• The number of retry attempts and the order in which the alternative data sources are used can be customized based on the requirements and preferences of the application.

import { FallbackDataSource } from '@xdefi-tech/chains-core';
import { EvmProvider, EVM_MANIFESTS } from '@xdefi-tech/chains-evm';

const provider = new EvmProvider(
  new FallbackDataSource(
    EVM_MANIFEST.ethereum,
    {
      attempts: 5,
    },
    new EvmProvider.dataSourceList.IndexerDataSource(EVM_MANIFEST.ethereum),
    new EvmProvider.dataSourceList.ChainDataSource(EVM_MANIFEST.ethereum)
  )
);

// The same as any other provider
const response = await provider.getBalance(
  '0x1234567890123456789012345678901234567890'
);
const data = await response.getData();

Retrieving a Transaction

1. Get Transaction Hash

If you have a transaction hash, you can retrieve the transaction details. Use the getTransaction method of the BitcoinProvider:

const txHash = 'TX HAS';
const txData = await provider.getTransaction(txHash);

The txData object will contain transaction details, including the transaction hash.

Contribution

Please make sure to read the Contributing Guide before making a pull request. If you have a Chainslib-related project or feature request, feel free to open an issue.

Thank you to all the people who already contributed to Chainslib!

License

This project is licensed under the Apache-2.0 License.

Copyright © 2024 XDEFI