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Contract Address Log Event

Unleashing the Power of CONTRACT_ADDRESS_LOG_EVENT Notifications
The world of blockchain and smart contracts is evolving at an unprecedented pace. CONTRACT_ADDRESS_LOG_EVENT notifications offer a powerful way to stay informed about specific smart contract events in real-time. By utilizing this feature, you can enhance security, streamline data analysis, improve user experience, and maintain flexibility in your monitoring approach. If you're a developer or business involved in the blockchain space, it's time to harness the power of these webhook notifications to optimize your dApp or service.
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How to do it?

TypeScript / JavaScript
curl
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import { TatumSDK, Ethereum, Network } from '@tatumio/tatum'
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​
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(async () => {
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const tatum = await TatumSDK.init<Ethereum>({network: Network.ETHEREUM})
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const monitoredContractAddress = '0xF64E82131BE01618487Da5142fc9d289cbb60E9d'
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const monitoredEvent = '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'
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const subscription = await tatum.notification.subscribe.contractAddressLogEvent({
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contractAddress: monitoredContractAddress,
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event: monitoredEvent,
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url: 'https://<YOUR_WEBHOOK_URL>' // replace with your handler URL
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})
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console.log(`Now you will be notified about all monitored event calls on ${monitoredContractAddress}`)
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})()
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curl -i -X POST \
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https://api.tatum.io/v4/subscription?type=mainnet \
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-H 'Content-Type: application/json' \
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-d '{
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"type": "CONTRACT_ADDRESS_LOG_EVENT",
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"attr": {
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"contractAddress": "0xF64E82131BE01618487Da5142fc9d289cbb60E9d",
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"chain": "ETH",
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"event": "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
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"url": "https://<YOUR_WEBHOOK_URL>"
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}
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}'

What does the fired webhook look like?

The fired notification webhook you will receive in your webhook listener will have the following format.
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{
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"events": [
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{
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"txId": "0x7d3dda0430471fe460c07b1ecab35670ef4ce85b",
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"logIndex": 1,
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"timestamp": 1620914417,
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"address": "0x7D3Dda0430471Fe460C07b1ecaB35670eF4ce85b",
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"topic_0": "0x4e3275a5d28e4f6383a4f74592ac9e2f1d0331bde8f7f25cf47d4b15323a47b8",
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"topic_1": "0x000000000000000000000000f64e82131be01618487da5142fc9d289cbb60e9d",
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"topic_2": "0x000000000000000000000000690b9a9e9aa1c9db991c7721a92d351db4fac990",
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"data": "0x0000000000000000000000000000000000000000000000000000000000000064"
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}
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],
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"blockNumber": 110827114,
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"chain": "ethereum-mainnet",
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"subscriptionType": "CONTRACT_ADDRESS_LOG_EVENT"
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}

Which blockchain networks are supported?

Blockchain
Mainnet
Testnet
Ethereum
Network.ETHEREUM
Network.ETHEREUM_SEPOLIA Network.ETHEREUM_GOERLI
Polygon
Network.POLYGON
Network.POLYGON_MUMBAI
Binance Smart Chain
Network.BINANCE_SMART_CHAIN
Network.BINANCE_SMART_CHAIN_TESTNET
Celo
Network.CELO
Network.CELO_ALFAJORES
Klaytn
Network.KLAYTN
Network.KLATN_BAOBAB
© Tatum Technology, LLC