Until 1e8869e the backfill kept only MiningRewards::* and Balances::Transfer.
The skip-list that replaced that allowlist only applied to blocks read after
the deploy, and event_scan never revisits a range it has claimed. So on
mainnet every block below 18510 has no Wormhole::* (or any other newly kept
kind) while indexed_from says 1. Planck and Heisenberg have the same hole over
whatever they had read by then.
This was found checking #22's endpoint against a mining address whose
deposits began at transfer_count 17,142. A mainnet node decodes
Wormhole::NativeTransferred in blocks 18400 and 18509, under the same spec 152
as the indexed blocks.
Migration 0008 collapses each chain's cursor to its top (low = high), so the
backfill walks back to genesis again. record_events and record_extrinsics
upsert on their primary keys, so re-reading is safe. Until the walk finishes,
indexed_from reports the real, shrinking gap. CLAUDE.md now says that keeping
more events needs a migration like this one.
Closes#23
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012uDUodEcRbBwNRi3UCmw8f
rob thijssen
501a9e6ad4
