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Blockchain Resources and Projects 🌍🚀

Background Knowledge ✔️

Blockchain Projects Directory ⭐

Blockchain Courses 📚

Free Blockchain and Cryptocurrency APIs

Blockchain

API Description Auth HTTPS CORS
Bitquery Onchain GraphQL APIs & DEX APIs apiKey Yes Yes
Chainlink Build hybrid smart contracts with Chainlink No Yes Unknown
Chainpoint Chainpoint is a global network for anchoring data to the Bitcoin blockchain No Yes Unknown
Covalent Multi-blockchain data aggregator platform apiKey Yes Unknown
Etherscan Ethereum explorer API apiKey Yes Yes
Helium Helium is a global, distributed network of Hotspots that create public, long-range wireless coverage No Yes Unknown
Nownodes Blockchain-as-a-service solution that provides high-quality connection via API apiKey Yes Unknown
Steem Blockchain-based blogging and social media website No No No
The Graph Indexing protocol for querying networks like Ethereum with GraphQL apiKey Yes Unknown
Walltime To retrieve Walltime's market info No Yes Unknown
Watchdata Provide simple and reliable API access to Ethereum blockchain apiKey Yes Unknown

Cryptocurrency

API Description Auth HTTPS CORS
0x API for querying token and pool stats across various liquidity pools No Yes Yes
1inch API for querying decentralize exchange No Yes Unknown
Alchemy Ethereum Ethereum Node-as-a-Service Provider apiKey Yes Yes
apilayer coinlayer Real-time Crypto Currency Exchange Rates apiKey Yes Unknown
Binance Exchange for Trading Cryptocurrencies based in China apiKey Yes Unknown
Bitcambio Get the list of all traded assets in the exchange No Yes Unknown
BitcoinAverage Digital Asset Price Data for the blockchain industry apiKey Yes Unknown
BitcoinCharts Financial and Technical Data related to the Bitcoin Network No Yes Unknown
Bitfinex Cryptocurrency Trading Platform apiKey Yes Unknown
Bitmex Real-Time Cryptocurrency derivatives trading platform based in Hong Kong apiKey Yes Unknown
Bittrex Next Generation Crypto Trading Platform apiKey Yes Unknown
Block Bitcoin Payment, Wallet & Transaction Data apiKey Yes Unknown
Blockchain Bitcoin Payment, Wallet & Transaction Data apiKey Yes Unknown
blockfrost Cardano Interaction with the Cardano mainnet and several testnets apiKey Yes Unknown
Brave NewCoin Real-time and historic crypto data from more than 200+ exchanges apiKey Yes Unknown
BtcTurk Real-time cryptocurrency data, graphs and API that allows buy&sell apiKey Yes Yes
Bybit Cryptocurrency data feed and algorithmic trading apiKey Yes Unknown
CoinAPI All Currency Exchanges integrate under a single api apiKey Yes No
Coinbase Bitcoin, Bitcoin Cash, Litecoin and Ethereum Prices apiKey Yes Unknown
Coinbase Pro Cryptocurrency Trading Platform apiKey Yes Unknown
CoinCap Real time Cryptocurrency prices through a RESTful API No Yes Unknown
CoinDCX Cryptocurrency Trading Platform apiKey Yes Unknown
CoinDesk CoinDesk's Bitcoin Price Index (BPI) in multiple currencies No Yes Unknown
CoinGecko Cryptocurrency Price, Market, and Developer/Social Data No Yes Yes
Coinigy Interacting with Coinigy Accounts and Exchange Directly apiKey Yes Unknown
Coinlib Crypto Currency Prices apiKey Yes Unknown
Coinlore Cryptocurrencies prices, volume and more No Yes Unknown
CoinMarketCap Cryptocurrencies Prices apiKey Yes Unknown
Coinpaprika Cryptocurrencies prices, volume and more No Yes Yes
CoinRanking Live Cryptocurrency data apiKey Yes Unknown
Coinremitter Cryptocurrencies Payment & Prices apiKey Yes Unknown
CoinStats Crypto Tracker No Yes Unknown
CryptAPI Cryptocurrency Payment Processor No Yes Unknown
CryptingUp Cryptocurrency data No Yes Unknown
CryptoCompare Cryptocurrencies Comparison No Yes Unknown
CryptoMarket Cryptocurrencies Trading platform apiKey Yes Yes
Cryptonator Cryptocurrencies Exchange Rates No Yes Unknown
dYdX Decentralized cryptocurrency exchange apiKey Yes Unknown
Ethplorer Ethereum tokens, balances, addresses, history of transactions, contracts, and custom structures apiKey Yes Unknown
EXMO Cryptocurrencies exchange based in UK apiKey Yes Unknown
FTX Complete REST, websocket, and FTX APIs to suit your algorithmic trading needs apiKey Yes Yes
Gateio API provides spot, margin and futures trading operations apiKey Yes Unknown
Gemini Cryptocurrencies Exchange No Yes Unknown
Hirak Exchange Rates Exchange rates between 162 currency & 300 crypto currency update each 5 min, accurate, no limits apiKey Yes Unknown
Huobi Seychelles based cryptocurrency exchange apiKey Yes Unknown
icy.tools GraphQL based NFT API apiKey Yes Unknown
Indodax Trade your Bitcoin and other assets with rupiah apiKey Yes Unknown
INFURA Ethereum Interaction with the Ethereum mainnet and several testnets apiKey Yes Yes
Kraken Cryptocurrencies Exchange apiKey Yes Unknown
KuCoin Cryptocurrency Trading Platform apiKey Yes Unknown
Localbitcoins P2P platform to buy and sell Bitcoins No Yes Unknown
Mempool Bitcoin API Service focusing on the transaction fee No Yes No
MercadoBitcoin Brazilian Cryptocurrency Information No Yes Unknown
Messari Provides API endpoints for thousands of crypto assets No Yes Unknown
Nexchange Automated cryptocurrency exchange service No No Yes
Nomics Historical and realtime cryptocurrency prices and market data apiKey Yes Yes
NovaDax NovaDAX API to access all market data, trading management endpoints apiKey Yes Unknown
OKEx Cryptocurrency exchange based in Seychelles apiKey Yes Unknown
Poloniex US based digital asset exchange apiKey Yes Unknown
Solana JSON RPC Provides various endpoints to interact with the Solana Blockchain No Yes Unknown
Technical Analysis Cryptocurrency prices and technical analysis apiKey Yes No
VALR Cryptocurrency Exchange based in South Africa apiKey Yes Unknown
WorldCoinIndex Cryptocurrencies Prices apiKey Yes Unknown
ZMOK Ethereum JSON RPC API and Web3 provider No Yes Unknown

Sample Code included in repo from First Blockchain in Java and Tiniest Blockchain in Python tutorials. For more projects and free APIs, check out: Build Your Own X and Public APIs repo. 💚

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