# Blockchain Infrastructure API — One Unified Stack

## The blockchain infrastructure layer for Web3, as one API

Everything an application needs to read from and write to blockchains — indexed data, wallet tracking, real-time webhooks, node access, transaction broadcasting and AML compliance — across 20+ chains, through a single unified REST API. No node to run, no infrastructure to maintain.

- 20+ blockchains, one interface
- 170+ REST API endpoints
- 99.9% uptime

## What blockchain infrastructure includes

Instead of stitching together nodes, indexers, a wallet layer and a compliance vendor, get the whole stack from one provider — with the same request and response shape across every chain.

### Blockchain data

Blocks, transactions, address balances and history, token transfers and contract data — indexed and query-ready across UTXO, EVM, XRP, Solana and Kaspa.

### Wallet & xPub tracking

Watch-only HD-wallet tracking — attach an xPub, yPub or zPub and derive, sync and monitor addresses across EVM, UTXO and XRP, non-custodially.

### Real-time events

Webhook subscriptions for incoming and outgoing transactions, confirmations, token transfers and new blocks — so your app reacts the moment something happens on-chain.

### Node access

Managed shared and dedicated RPC nodes across 20+ chains — full JSON-RPC access with enterprise uptime, without running the nodes yourself.

### AML compliance

Native sanctions, fraud and KYT screening for both addresses and transactions across 20+ chains — compliance built into the same API, not a separate vendor.

### Transactions & fees

Prepare and broadcast transactions, get real-time fee recommendations and simulate EVM transactions before sending — the write side of the stack.

## Why one unified infrastructure provider

**One integration, every chain.** The same request and response shape works across Bitcoin, Ethereum and other EVM chains, Solana, XRP, TRON, Kaspa, Tezos and UTXO chains. Add a new chain to your product without a new integration — non-EVM chains are first-class, not bolted on.

**Managed, not self-hosted.** No nodes to deploy, sync or keep online; no indexers to build; no compliance vendor to wire in separately. You call a REST API and the infrastructure is handled — with a free tier to start and no credit card required.

## Common questions

**What is blockchain infrastructure?** The set of services an application needs to read from and write to blockchains without running its own nodes — indexed on-chain data, wallet and address tracking, real-time event webhooks, RPC node access, transaction broadcasting and compliance screening. CryptoAPIs provides all of these as one unified REST API across 20+ blockchains.

**Do I need to run my own blockchain node?** No. CryptoAPIs is managed blockchain infrastructure — you call a REST API and get indexed data, wallet tracking, webhooks and transaction broadcasting without deploying, syncing or maintaining nodes. Dedicated and shared node access is also available if you need direct RPC.

## Related

- [Crypto API alternatives comparison](https://cryptoapis.io/compare/crypto-api-alternatives)
- [Explore the products](https://cryptoapis.io/products)
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