Blockchainmade simple
Build apps that work everywhere
A TypeScript library to create apps for Ethereum, Bitcoin, and other blockchains. Skip the complexity—launch faster and reach users everywhere, whether you're building for the web or desktop.One library. All blockchains. Any device.
Blockchain essentials
Secure, scalable blockchain framework for modern development
Wallet creation
Create or import wallets using recovery phrases (like seed phrases), raw seeds, private keys, or encrypted files (Ethereum/DEX-style). Works with popular standards (BIP39, BIP32).
Multichain Support
Connect to Bitcoin, Ethereum, Binance, Polygon, and more. Manage addresses and assets across different blockchains in one place.
One-Click Transactions
Send crypto easily: prepare transactions, estimate fees, and broadcast to the network. Auto-converts units (e.g., "1 BTC" or "1000 satoshi").s
Balance Check
Track balances in user-friendly formats (e.g., BTC, ETH) or raw units (satoshi, wei). View all your crypto holdings in a single summary.
Smart Fee Estimation
Automatically calculates transaction fees (like gas fees) for fast or cheap options, so you don’t overpay or wait too long.
Built-In RPC Access
Use pre-configured blockchain connections (RPCs) to interact with networks like Ethereum or Binance Smart Chain via tools like Web3.js or Ethers.
Blockchain Data API
Fetch transaction history, block details, or mempool data directly through simple REST API calls—no complex setup needed.
Automatic Security
Encrypt wallets with a password for safety. Unlock temporarily with your password to sign transactions, then relock automatically.
Supported blockchains
Currently there are 12 blockchains supported:
Bitcoin
Ethereum
Bnb
Dogecoin
Avalanche
Litecoin
Bitcoin Cash
Polygon
Arbitrum
Fantom
Base
