
Builder Codes and ERC-8021 Explained: How to Solve Onchain Attribution
Builder Codes and EIP-8021 solve onchain attribution by appending standardized data suffixes to transaction calldata, linking apps to transactions for verifiable tracking. Base supports this natively via automatic RPC suffixing and a code registry mapping strings to payout addresses. Benefits include fair revenue sharing, precise ROI measurement, and reduced integration effort, enabling builders to claim credit for driven volume without smart contract changes. Onchain builders struggle to attribute transactions to specific apps, as standard tx data obscures referral sources. This attribution gap distorts acquisition metrics and growth decisions. This playbook dissects builder codes and ERC-8021 , standards Base now supports to deliver verifiable onchain tracking. Introduction Attribution remains one of the most persistent challenges for onchain builders. While web2 relies on cookies and UTM parameters to track user acquisition, the pseudonymous nature of blockchain transactions often b
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