Building a Multi-Chain EVM Swap Parser

Normalizing swaps across Ethereum, Base, Arbitrum and BNB Chain without losing protocol-specific meaning.

Event ingestion

Collect receipts and logs with reorg-aware finality. Store chain ID, block hash and transaction index.

Protocol adapters

Decode router, pool and aggregator events through versioned adapters. Unknown contracts need a generic transfer-delta fallback.

Normalization

Emit stable trader, token in/out, raw amount, decimals, venue and USD-value fields while retaining original logs.

Quality controls

Detect duplicate routes, fee-on-transfer tokens, proxy upgrades and reorg reversals. Reconcile aggregate flows against balances.

TierZero builds EVM bots and multi-chain data pipelines.