Unified, multichain blockchain data API # Query any chain through one API Unified API lets you access NFT, token and transaction data across many blockchains with a single, normalized schema. Fewer RPC calls, less boilerplate, and faster time to production for every Web3 product. [Start with Unified API](https://auth.crypto-chief.com/registration) #### Unified API A superior way to query blockchains. Access normalized NFT, token, block and transaction data across multiple networks through a single, developer-friendly API. Built to replace custom indexers and reduce raw RPC complexity in production apps. #### NFT API Search NFTs and holders, fetch metadata and transfers, and work with ENS, POAP and Unstoppable Domains across many mainnets and testnets — all via one unified NFT API. #### Token API Get token balances, prices, holders and transfers using indexed on-chain data. Perfect for wallets, exchanges, portfolio trackers and DeFi dashboards that need fast, accurate token information. #### Query API Retrieve blocks, block ranges, transactions, internal calls, events and logs with near-instant response times. Query multiple chains in one request and power analytics, monitoring and custom indexers. #### SDK & Tooling Use ready-to-go SDKs and examples to integrate Unified API into your backend, data pipelines and dashboards. Ship faster without reinventing blockchain data access. ## Supported Networks Unified API works across 19+ mainnets and 6+ testnets, so you can query on-chain data from a single endpoint. From Ethereum and BNB Chain to Solana, Tron, TON, Bitcoin and more — one schema, many blockchains. ![Solana](/img/protocols/solana.svg) Solana SOL High-speed blockchain for scalable DeFi and ultra-low-fee Web3 apps. ![Ethereum](/img/protocols/eth.svg) Ethereum ETH The leading smart-contract blockchain powering DeFi and NFTs. ![Tron](/img/protocols/tron.svg) Tron Tron Fast blockchain for global payments, DeFi, and stablecoin transfers. ![BTC](/img/protocols/btc.svg) Bitcoin BTC The original decentralized blockchain for secure peer-to-peer payments. ![TON](/img/protocols/ton.svg) TON TON Telegram-native blockchain built for mass adoption and lightning speed. ![BSC](/img/protocols/bsc.svg) BNB Smart Chain BNB Low-fee EVM blockchain for smart contracts and a thriving DeFi ecosystem. [View all protocols](/rpc/) [Get your API key ](https://auth.crypto-chief.com/registration) ## Built for every on-chain data use case Wallets, NFTs, trading, analytics and compliance — Unified API gives you a single, normalized way to read blockchain data across chains. ##### Wallets Show multi-chain balances, history and token portfolios with one API instead of custom indexers per network. ##### NFTs & collections Power NFT marketplaces, galleries and analytics tools with metadata, holders and transfer history from many chains. ##### Payments & settlement Verify on-chain payments, reconcile incoming transfers and track settlement flows using indexed transaction data. ##### Trading & DeFi Build trading tools, portfolio trackers and DeFi dashboards with fast access to token transfers, pools and protocol activity. ##### Analytics & BI Feed ClickHouse, BigQuery and data warehouses with normalized, analytics-ready blockchain datasets across chains. ##### Risk & compliance Enrich AML, wallet screening and transaction monitoring with detailed on-chain histories and entity-level insights. [Documentation](https://docs.crypto-chief.com) [Get a test endpoint ](https://auth.crypto-chief.com/registration) ## Pricing that grows with your needs. ### Free Start building on Web3 — no credit card. ##### $0 - 5 reqs/sec RPC - 5 reqs/min Unified API - 1 req/day AML - Ultimate chains - WSS, Statistics - Community support [Get started ](https://auth.crypto-chief.com/registration) ### Pay for use Flexible pay-as-you-go for any workload. ##### From $10 - 400 reqs/sec RPC - 300 reqs/min Unified API - 5 reqs/sec AML - EventStream - Ultimate chains - WSS, Whitelists, Statistics - Support portal [Get started](https://auth.crypto-chief.com/registration) ### Subscription From $500 monthly plus 20% extra value. ##### From $500 - 400 reqs/sec RPC - 300 reqs/min Unified API - 5 reqs/sec AML - EventStream - Ultimate chains - WSS, Whitelists, Statistics - Support portal [Get started ](https://auth.crypto-chief.com/registration) ### Enterprise Tailored solution for expert builders ##### Custom terms All Subscription features plus: - Flexible rate limits - Engineering team support - Custom SLA - Personal manager [Contact Sales ](/contact/) ## Got questions? learn more about Unified API ## What is the Unified API? Unified API is a multichain blockchain data layer that lets you query NFTs, tokens, blocks, transactions, events and logs across many networks using a single, normalized schema. ## How is it different from the RPC Gateway? RPC Gateway exposes native JSON-RPC methods for each chain. Unified API returns higher-level, indexed data structures (NFTs, tokens, blocks, logs) in one format across networks, reducing the need to build and maintain your own indexers. ## Which networks are supported by Unified API? Unified API covers 19+ mainnets and 6+ testnets, including popular EVM chains and non-EVM networks. New blockchains are added based on demand and enterprise requests. ## What can I do with the NFT API? You can search for NFTs, collections and holders, fetch metadata, transfers and activity across chains. It’s ideal for NFT marketplaces, explorers, galleries and analytics dashboards. ## Is Unified API suitable for analytics and ML pipelines? Yes. Unified API returns structured JSON that integrates well with data warehouses like ClickHouse or BigQuery and with Python-based machine learning stacks for on-chain analytics and scoring. ## Do you offer SDKs or client libraries? We provide code examples and SDKs for popular languages so you can integrate Unified API into your backend, cron jobs and data pipelines with minimal setup. ## How does pricing work for Unified API? Unified API uses transparent, usage-based pricing. You start with a free tier for development and pay only when your project scales and requires higher request volumes or enterprise features. ## Can I combine multiple chains in a single request? Yes. One of the core benefits of Unified API is multi-chain search: you can request data from several networks in one query and receive normalized responses in a single payload. ## Is historical / archive data supported? Unified API is optimized for fast interaction with archive data, letting you query large block ranges, past transactions and historical token or NFT states. ## Can I use Unified API together with EventStream and AML Intelligence? Yes. Unified API provides structured historical data, EventStream delivers real-time events, and AML Intelligence adds risk and compliance signals. Together they form a complete Web3 data stack. ## How quickly can I integrate Unified API? Most teams integrate in a few hours: request an API key, pick the endpoints for your use case (NFT, Query, Token) and plug our examples into your existing backend or data layer. ## Do you offer SLAs or dedicated capacity for high-volume projects? Enterprise customers can get custom SLAs, dedicated infrastructure and private endpoints tailored to high-volume analytics, exchanges, or large-scale dApps. #### Start building with Unified API [Get started for free](https://auth.crypto-chief.com/registration)