Indexer Integration

A safe EVM indexer combines block polling, bounded log queries, and reorg handling.

export RPC_URL=http://127.0.0.1:8545
pnpm tsx chains/ethereum/samples/indexer/block-poll.ts
pnpm tsx chains/ethereum/samples/indexer/reorg-handling.ts

Strategy:

1. Poll eth_blockNumber and process blocks in order.
2. Query logs in bounded ranges.
3. Keep recent blocks provisional until enough confirmations or Beacon finality.
4. If a parent hash does not match the stored canonical chain, roll back affected blocks and replay.

Use Beacon API finality checkpoints from beacon-APIs when your deployment has protected access to a consensus client.