Task 02h Phase 3: CLOB-based recovery for indexer-failed FFIC fficd-003 markets#9
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…indexer-failed markets Both markets (Iran Apr30 $269M, Ceasefire Apr7 $174M) had zero trades in DB due to The Graph indexer failure. Polygonscan getLogs and eth_getLogs are infeasible (CTF Exchange emits 300 events/block across all markets; filtering client-side requires 82GB transfer). The Graph subgraph confirmed empty for both YES/NO token IDs. Final approach: CLOB /prices-history (full 1-min candles, 14-day batches) + data-api.polymarket.com/trades (4,000 most-recent trades per market). Results: - Iran Apr30: 28,774 price candles (2026-03-18 – 2026-04-09) + 4,000 trades - Ceasefire Apr7: 23,127 price candles (2026-03-24 – 2026-04-11) + 4,000 trades - Both markets resolved YES; price data covers full market lifetime Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
Phase 3 of FFIC trade-history backfill targeting 2 indexer-failed deadline markets ($269M Iran-by-Apr-30, $174M Ceasefire-by-Apr-7). After 4 unsuccessful approaches (Polygonscan logs, Polygon RPC, The Graph, CLOB /trades), recovered usable data via CLOB /prices-history + data-api /trades in 38 seconds total.
What was recovered
Price series sufficient for ILS computation. Trade-level wallet analysis limited to resolution window (last 1-2 days), not full pre-event history.
Approach history
5 approaches documented:
Documents accessibility constraints of $1B+ markets on public Polymarket APIs.
Out of scope
Side observations
resolution_type='unclassifiable'but appear to be deadline-resolved by question formulation. Resolution typology classifier may need refinement.Files
reports/TASK_02H_PHASE3_RESULTS.mdscripts/backfill_ffic_polygonscan_logs.py(CLOB prices + data-api trades collector)After merge
Branch closes. Next: Task 03 (deadline-ILS implementation).
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