Connect to B² Network, the Bitcoin Layer 2 combining zero-knowledge rollups with native Bitcoin security. Experience EVM compatibility backed by the world's most secure blockchain.
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Technical characteristics and available endpoints
Mainnet & Testnet Support
B² Network is a Bitcoin Layer 2 combining zero-knowledge rollup technology with Bitcoin's unparalleled security. As an EVM-compatible rollup anchored to Bitcoin, B² enables smart contracts, DeFi, and complex applications while inheriting Bitcoin's security guarantees. Through innovative commitment schemes that store rollup state on Bitcoin, B² represents the next evolution of Bitcoin as a settlement layer for programmable finance.
https://rpc.crypto-chief.com/b2/{YOUR_API_KEY}
wss://rpc.crypto-chief.com/b2/ws/{YOUR_API_KEY}
Replace {YOUR_API_KEY} with your actual API key from the dashboard.
Access Bitcoin's smart contract layer
A B² Network RPC node provides applications with access to a Bitcoin Layer 2 that combines zero-knowledge rollups with Bitcoin's security model. Unlike sidechains that have separate security assumptions, B² anchors its state to Bitcoin mainnet, inheriting Bitcoin's unmatched decentralization and security while enabling EVM smart contracts impossible on Bitcoin L1.
Bitcoin is the most secure blockchain but has limited programmability. Layer 2 solutions like B² Network unlock Bitcoin's potential by enabling complex applications while settling to Bitcoin's secure base layer. This approach preserves Bitcoin's core strengths while expanding its capabilities to include DeFi, NFTs, and sophisticated smart contracts.
B² Network advantages:
B² uses Taproot to commit rollup state roots to Bitcoin mainnet. Zero-knowledge proofs verify that state transitions are valid, and these proofs plus state commitments are inscribed on Bitcoin. This creates a cryptographic chain of custody from B²'s execution layer to Bitcoin's settlement layer.
B² architecture:
With over $1.3T in Bitcoin value largely sitting idle, BTCFi (Bitcoin Finance) represents a massive opportunity. B² Network enables Bitcoin holders to use their BTC in DeFi protocols, earn yield, and participate in sophisticated financial applications — all while maintaining Bitcoin's security guarantees.
As Bitcoin Layer 2 technology matures, solutions like B² unlock Bitcoin's potential as programmable money.
Quick start for developers
B² Network supports all standard Ethereum JSON-RPC methods:
const { ethers } = require('ethers');
const provider = new ethers.JsonRpcProvider('https://rpc.crypto-chief.com/b2/YOUR_API_KEY');
// Verify we're on B² Network
const network = await provider.getNetwork();
console.log('Chain ID:', network.chainId); // 223
// Get BTC balance on B² Network
const balance = await provider.getBalance('0x...');
console.log('BTC Balance on B²:', ethers.formatEther(balance));
// Deploy BTCFi protocol
const BTCFI_ABI = [
'function depositBTC() external payable',
'function getUserPosition(address) view returns (uint256)'
];
const btcfi = new ethers.Contract('0x...', BTCFI_ABI, wallet);
// Deposit BTC into DeFi protocol
const tx = await btcfi.depositBTC({ value: ethers.parseEther('0.1') });
await tx.wait();
console.log('BTC deposited into DeFi on Bitcoin L2!');from web3 import Web3
w3 = Web3(Web3.HTTPProvider('https://rpc.crypto-chief.com/b2/YOUR_API_KEY'))
print('Connected to B² Network:', w3.is_connected())
print('Chain ID:', w3.eth.chain_id) # 223
print('Latest block:', w3.eth.block_number)
# Gas price in BTC
gas_price = w3.eth.gas_price
print(f'Gas price (BTC): {gas_price}')
# Get BTC balance
balance = w3.eth.get_balance('0x...')
print(f'BTC on B²: {balance / 1e18}')const { ethers } = require('ethers');
const provider = new ethers.WebSocketProvider('wss://rpc.crypto-chief.com/b2/ws/YOUR_API_KEY');
// Monitor new blocks on Bitcoin L2
provider.on('block', async (blockNumber) => {
const block = await provider.getBlock(blockNumber);
console.log(`B² block ${blockNumber}: ${block.transactions.length} txs`);
});
// Monitor BTC transfers on Layer 2
const filter = {
topics: [ethers.id('Transfer(address,address,uint256)')]
};
provider.on(filter, (log) => {
console.log('BTC transfer on Layer 2:', log);
});Bitcoin Layer 2 infrastructure
Infrastructure supporting Bitcoin-anchored rollup delivering <70ms latency with L1 security inheritance.
Enterprise infrastructure with zero-knowledge proof verification and 99.9% uptime guarantees.
Monitor Bitcoin bridge activity, DeFi protocols, state commitments, and ecosystem growth.
Strategically deployed nodes ensuring reliable access to Bitcoin's smart contract layer.
Infrastructure designed to scale with growing BTCFi adoption and Bitcoin DeFi applications.
24/7 support from engineers specialized in Bitcoin Layer 2s, zkRollups, and BTCFi protocols.
Build Bitcoin DeFi
B² Network's Bitcoin-backed security and EVM compatibility enable DeFi protocols, NFT platforms, and applications unlocking Bitcoin's $1.3T+ value.
Build lending, borrowing, and yield protocols where Bitcoin holders can earn returns while maintaining BTC security.
Launch decentralized exchanges enabling Bitcoin trading with full smart contract programmability.
Create Bitcoin bridging and wrapping solutions leveraging B²'s native Bitcoin integration.
Build NFT platforms on Bitcoin's security layer with EVM compatibility for advanced functionality.
Develop yield aggregators and strategies specifically for Bitcoin holders seeking returns.
Create institutional-grade custody solutions leveraging Bitcoin's security with smart contract flexibility.
Start building on Web3 — no credit card.
Flexible pay-as-you-go for any workload.
From $500 monthly plus 20% extra value.
Tailored solution for expert builders
All Subscription features plus: