7 chainsBitcoin, Ethereum, TRON, Solana, BNB Chain, Polygon & Arbitrum

The Unified Blockchain API for Crypto Payments & Webhooks

One REST API to send tokens, detect deposits, and trigger webhooks for on-chain events — built for production teams.

No card required • Go live in hours
create-address.js
// Chaingateway - Create a password-protected EVM address// Docs: /developers/tutorials/create-addresses.htmlconst axios = require('axios');async function createSecureAddress() {  const url = 'https://api.chaingateway.io/v2/ethereum/addresses';  const payload = {    // Optional: omit password to get privatekey in response (single-use only)    password: 'your_secure_password',  };  const headers = {    Accept: 'application/json',    'content-type': 'application/json',    Authorization: 'YOUR_API_TOKEN',  };  const response = await axios.post(url, payload, { headers });  console.log('Created address:', response.data);  // Example response:  // {  //   "status": 201,  //   "ok": true,  //   "message": "Address created",  //   "data": {  //     "address": "0xYourNewAddress",  //     "keystore": "{...}" // only for EVM when password given  //   }  // }}// For BSC/Polygon just replace /ethereum with /bsc or /polygon// For Tron replace /ethereum with /troncreateSecureAddress().catch(console.error);

Every plan starts with a 7-day free trial — no credit card, no KYC. Create your API key and run the example above against your own account.

Why Us?

A better way to build Blockchain Apps

Fetch Blockchain Data

Fetch Blockchain data with our unified API, fully decoded supporting multiple chains

Realtime Blockchain Event Notifications

Get notified of on-chain events via webhooks, including instant payment notifications and contract executions

Easy Transaction

Build, sign, and send transactions with simple API calls. We built smart defaults so you don’t have to

We Support Your Token

We integrate with all major token standards, including ERC-20, ERC-721, TRC-20, TRC-721 & BEP-20

Core Features

Everything you need, unified

All the blockchain operations you need with one consistent API. Stop juggling different endpoints for different chains.

Send Transactions

One function call to send transactions across all chains. Tron, Ethereum, Polygon, Bitcoin, Arbitrum—same interface.

  • Gas estimation
  • Auto-nonce handling
  • Signature verification
Token Transactions

Send ERC-20, TRC-20, BEP-20 tokens with the same API call. No contract address complexity.

  • Works with any token
  • Auto token detection
  • Decimal handling
Check Balances

Query native and token balances instantly. Automatic formatting and decimals—no manual parsing.

  • Instant queries
  • Works with all tokens
  • NFT Ownership support
Decoded Data

All blockchain responses come pre-decoded and human-readable. No hex parsing required.

  • Auto-decoding
  • Type safety
  • Full metadata
Unified Endpoints

Every chain uses identical routes and parameters. Write once, deploy everywhere.

  • Same routes
  • Same parameters
  • No chain logic
Enterprise Security

HMAC-signed requests, encrypted keys, and role-based access. Bank-grade security built-in.

  • HMAC signing
  • Bearer Auth
  • Passkey encrypted wallets

Working with all Tokens,
Including Yours!

With Chaingateway, you can receive and send any token on all implemented blockchains. You can build your own token and launch a payment system in minutes.

Lightning-fast: Payment detected → Webhook fired → Your app notified

Know the second a payment hits. React in real-time.

Chaingateway webhooks instantly notify your system of every deposit, withdrawal, and balance change—so you can automate fulfillment, trigger workflows, and delight customers without lifting a finger.

Payment received

Customer sent 1,000 USDC

Webhook fired

Real-time event pushed to your endpoint

Processing event

Action triggered

Order fulfilled, email sent, CRM updated

Non-custodial webhook delivery across seven chains. Start free for 7 days — no card, no KYC.

Supported Networks

One API. Every major chain.

Build once and deploy everywhere. Use identical code for all supported blockchains. No chain-specific logic needed.

Ethereum

The leading smart contract platform

  • ERC-20 Tokens
  • ERC-721 NFTs
mainnetsepolia
Tron

Fast and cost-efficient blockchain

  • TRC-20 Tokens
  • TRC-721 NFTs
mainnetnile
Polygon

Ethereum's scaling solution

  • ERC-20 Tokens
  • ERC-721 NFTs
mainnetamoy
BNB Chain

Binance's high-performance chain

  • BEP-20 Tokens
  • BEP-721 NFTs
mainnettestnet
Arbitrum

Ethereum L2 for high throughput

  • ERC-20 Tokens
  • ERC-721 NFTs
mainnetsepolia
Bitcoin

The original blockchain

  • Native Transfers
  • UTXO Management
mainnettestnet3

Every plan covers all seven chains — transaction, wallet and webhook limits scale by plan. See plan limits and pricing.

Ready to get started?

Start your free trial today.

Start with a 7-day free trial. No credit card required. No setup fees. Cancel anytime.

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