docs: add content for Chains Lib Documentation

chains-lib/chains-lib.md

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-# Chains Lib
+# Chains Lib Documentation
 
-Coming soon...
+[Chainslib](https://github.com/XDeFi-tech/chains) is a 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
+
+Chainslib 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
+
+<details>
+<summary>Chainslib currently supports the following blockchain networks:</summary>
+
+- Bitcoin
+- Bitcoin Cash
+- Litecoin
+- Dogecoin
+- Ethereum
+- BNB Smart Chain
+- Avalanche
+- Polygon
+- Optimism
+- Arbitrum
+- Fantom
+- Other EVM-compatible chains
+- Cosmos
+- Osmosis
+- Juno
+- Other IBC-Compatible Chains
+- THORChain
+- BNB Beacon Chain
+- Solana
+
+</details>
+
+## Installation
+
+To use Chainslib in your TypeScript project, you can install it via npm or yarn:
+
+```bash
+npm install @xdefi-tech/chains
+# or
+yarn add @xdefi-tech/chains
+```
+
+## Usage
+
+Here's a basic example of how to use this library in your TypeScript application:
+
+### 1. Import Required Modules
+
+```typescript
+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:
+
+```typescript
+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.
+
+```typescript
+const txInput: MsgBody = {
+  from: "FROM ADDRESS",
+  to: "TO ADDRESS",
+  amount: 0.000001,
+};
+```
+
+### 4. Create a Transaction Message
+
+Create a transaction message using the provider:
+
+```typescript
+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:
+
+```typescript
+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`.
+
+```typescript
+await provider.broadcast([message]);
+```
+
+## 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:
+
+```typescript
+const txHash = "TX HAS";
+const txData = await provider.getTransaction(txHash);
+```
+
+The `txData` object will contain transaction details, including the transaction hash.
+
+## Disclaimer
+
+This library is provided as-is, and we make no warranties or guarantees regarding its functionality or security. Always exercise caution and proper security practices when working with blockchain assets.
+
+Happy blockchain development! 🚀🔗