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  Use Stream API to sync on-chain event to your backend in real-time.
  
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  Why Did It Move APInew
  Get the one sentence reason why a coin moved either up or down.
  
  Market Data API
  Trending NFT collections, Top ERC20s, NFT Drops and much more.
  
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  Discover hidden gems before anyone else with real-time token analytics.
  
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  Use powerful cross-chain data APIs for NFTs, tokens, balances, DeFi and more.
  Real-Time Data
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  Market insights
  APIs to build discovery pages, token explorers, and crypto news feeds.
  Nodes
  Fast and stable RPC nodes. Nothing more, nothing less.
  Moralis APIs
  Use powerful cross-chain data APIs for NFTs, tokens, balances, DeFi and more.
  
  NFT API
  Cross-chain NFT transfers, prices and metadata.
  
  Token API
  Real-time price, transfer and ownership token data.
  
  Wallet API
  The ultimate API for building Web3 Wallets.
  
  Blockchain API
  Block data, transactions, logs, raw & decoded data, transaction labelling and more.
  
  Price API
  Get real-time crypto prices with Moralis free Price API.
  
  DeFi API
  Liquidity reserves and pair data across multiple blockchains.
  
  Explore All Web3 APIs
  
  Real-Time Data
  Set custom filters and stream live on-chain data to your backend as it happens.
  
  Stream API
  Real-time data for any on-chain event.
  
  Use-Cases
  
  Increase user engagement
  Use real-time data to boost your user engagement and retention.
  
  Sync web3 data to your backend
  Use Stream API to sync on-chain event to your backend in real-time.
  
  Explore Streams APIs
  
  Market insights
  APIs to build discovery pages, token explorers, and crypto news feeds.
  
  Why Did It Move APInew
  Get the one sentence reason why a coin moved either up or down.
  
  Market Data API
  Trending NFT collections, Top ERC20s, NFT Drops and much more.
  
  Discovery API
  Discover hidden gems before anyone else with real-time token analytics.
  
  Nodes
  Fast and stable RPC nodes. Nothing more, nothing less.
  
  RPC Nodes
  High performing RPC nodes for all major chains
  
  NFT API
  Cross-chain NFT transfers, prices and metadata.
  
  Token API
  Real-time price, transfer and ownership token data.
  
  Wallet API
  The ultimate API for building Web3 Wallets.
  
  Blockchain API
  Block data, transactions, logs, raw & decoded data, transaction labelling and more.
  
  Price API
  Get real-time crypto prices with Moralis free Price API.
  
  DeFi API
  Liquidity reserves and pair data across multiple blockchains.
  
  Explore All Web3 APIs
  
  Stream API
  Real-time data for any on-chain event.
  
  Use-Cases
  
  Increase user engagement
  Use real-time data to boost your user engagement and retention.
  
  Sync web3 data to your backend
  Use Stream API to sync on-chain event to your backend in real-time.
  
  Explore Streams APIs
  
  Why Did It Move APInew
  Get the one sentence reason why a coin moved either up or down.
  
  Market Data API
  Trending NFT collections, Top ERC20s, NFT Drops and much more.
  
  Discovery API
  Discover hidden gems before anyone else with real-time token analytics.
  
  RPC Nodes
  High performing RPC nodes for all major chains
Chains
- EVM Chains
  
  Ethereum
  The world’s biggest smart contract network
  
  BNB
  The community-centric network with a vibrant ecosystem
  
  Basenew
  The next-generation Layer 2 solution incubated by Coinbase
  
  Polygon
  The decentralized Ethereum scaling platform with low fees
  
  Avalanche
  The quick and reliable smart contract platform
  
  Chiliznew
  The largest blockchain for Web3-ready sports and entertainment infrastructure
  
  Gnosisnew
  The Ethereum sidechain secured by thousands of stakers around the world
  
  Fantom
  The high-throughput open-source smart contract platform
  
  Cronos
  The EVM layer-1 network for DeFi, GameFi, and metaverse
  
  Arbitrum
  The smart, secure layer-2 scaling network for Ethereum
  
  Palm
  The scalable and sustainable Ethereum-compatible side chain
  
  Optimism
  The layer-2 Optimistic Rollup network for speed, stability, and scalability
  
  Other Networks
  
  Aptos
  The blockchain for a production-ready Web3 environment
  
  Solana
  The Proof of History consensus mechanism smart contract network
  
  See all supported chains
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- API Reference
  Start building your Web3 project today with Web3 API endpoints.
  
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  Integrate Web3 into any tech stack and follow step-by-step guides and get API endpoint references instantly.
  
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  Help Center
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Pricing
BlogThe number one blog for Web3 development. Join hundreds of thousands of readers in unraveling Web3 and learn how to build dapps at blazing speeds with Moralis!
- Moralis Blog
  Unravel Web3 and learn how to build dapps at blazing speeds with Moralis!
  All Articles
  News & Announcements
  Articles about the happenings of the blockchain and crypto industry from Moralis.io
  All News
  Moralis Blog
  Unravel Web3 and learn how to build dapps at blazing speeds with Moralis!
  All Articles
  
  API
  Cross-chain NFT transfers, prices and metadata.
  
  Token API
  Real-time price, transfer and ownership token data.
  
  Ethereum
  All about Ethereum, how to build Ethereum dapps, create Ethereum NFT projects, and much more using Moralis!
  
  NFTs
  Create your own NFT projects in a flash. Get all the inspiration and help you might need in building an NFT project.
  
  Python
  Moralis’ Python SDK allows you to easily integrate Web3 functionality into your Python applications.
  
  Streams
  The easiest way to get real-time blockchain data via webhooks.
  
  Web3
  Keep up-to-date with how to create Web3 projects, launch dapps, build NFT applications, and much more.
  
  Explore Moralis Blog
  
  News & Announcements
  Articles about the happenings of the blockchain and crypto industry from Moralis.io
  All News
  
  Announcements
  One place for all the latest announcements from Moralis. Learn about the latest chain integrations, partnerships, upcoming hackathons, and much, much more!
  
  Featured
  Moralis regularly ships new features that make life easier for all the developers using Moralis. Here, you can be the latest to take part of the latest Moralis features to supercharge your Web3 development.
  
  Explore Moralis News
  
  API
  Cross-chain NFT transfers, prices and metadata.
  
  Token API
  Real-time price, transfer and ownership token data.
  
  Ethereum
  All about Ethereum, how to build Ethereum dapps, create Ethereum NFT projects, and much more using Moralis!
  
  NFTs
  Create your own NFT projects in a flash. Get all the inspiration and help you might need in building an NFT project.
  
  Python
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  Streams
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Moralis Blog: June 18, 2021

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June 18, 2021

Web3 and JavaScript – What is JavaScript and Web3.js?

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