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  Use powerful cross-chain data APIs for NFTs, tokens, balances, DeFi and more.
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  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.
  
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  Cross-chain NFT transfers, prices and metadata.
  
  Token API
  Real-time price, transfer and ownership token data.
  
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  The ultimate API for building Web3 Wallets.
  
  Blockchain API
  Block data, transactions, logs, raw & decoded data, transaction labelling and more.
  
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  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
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  RPC Nodes
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  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
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  Basenew
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  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
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  Optimism
  The layer-2 Optimistic Rollup network for speed, stability, and scalability
  
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  Aptos
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  Solana
  The Proof of History consensus mechanism smart contract network
  
  See all supported chains
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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
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  Articles about the happenings of the blockchain and crypto industry from Moralis.io
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  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
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  Streams
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  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!
  
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  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
  
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  Cross-chain NFT transfers, prices and metadata.
  
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  Real-time price, transfer and ownership token data.
  
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December 16, 2022

How to Listen to Smart Contract Events Using Ethers.js

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