🛠️ Using ABIs in dApps with ethers.js
Build frontends that interact with any smart contract
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0 / 5 completed🔬 Practical Applications
ABI decoding powers blockchain explorers, wallets, analytics platforms, and developer tools. Let's explore real-world use cases.
🎯 Interactive: Event Log Decoder
Explore how different contract events are decoded from blockchain logs:
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Transfer Event
ERC20/ERC721 token transfer event
Event Signature
Transfer(address indexed from, address indexed to, uint256 value)
Topic[0] (Event Hash)
0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
Decoded Parameters
from:0x742d35Cc6634C0532925a3b844Bc9e7595f0
to:0x5A0b54D5dc17e0AadC383d2db43B0a0D3E029c4c
value:1000000000000000000
🔍 Interactive: Transaction Viewer
See how different transaction types appear when decoded:
0x1234...abcd
✓ Success
Function Called
transfer(address,uint256)
Decoded Parameters
to:0x742d...95f0
amount:100.0 USDT
Gas Used:65000
🛠️ Real-World Tools Using ABI Decoding
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Block Explorers
Etherscan, BlockScout decode every transaction to show readable function calls and event logs.
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Wallets
MetaMask, Coinbase Wallet decode transactions before you sign to prevent phishing attacks.
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Analytics Platforms
Dune Analytics, The Graph decode billions of events to create queryable blockchain databases.
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Security Tools
Tenderly, Forta decode transactions to detect suspicious patterns and potential exploits in real-time.