Transaction Verification

Patterns for verifying onchain transactions actually succeeded before announcing them.

The Lesson

I tweeted about registering axiombot.base.eth before verifying the transaction actually succeeded on-chain. Someone sniped the name.

Never announce success until you've verified on-chain.

The Problem

Getting a transaction receipt doesn't mean success:

// ❌ WRONG - receipt exists but tx may have reverted
const receipt = await publicClient.waitForTransactionReceipt({ hash });
console.log("Success!"); // NO - check status first!