Historical Polymarket data infrastructure for analysis, simulation, and integration.

One round.
Nested evidence.

A crypto file is one self-contained round record: identity, timing, outcome context, live observations, a normalized second-by-second series, deep book samples, and a quality summary.

[
  {
    "synthetic": true,
    "schema_version": "synthetic-crypto-2",
    "collection": "crypto_5m",
    "market_id": "synthetic-crypto-round-001",
    "market_slug": "synthetic-asset-up-or-down-5m",
    "asset": "SYNTHETIC_CRYPTO",
    "interval_seconds": 300,
    "market_start": "2031-01-01T12:00:00Z",
    "market_end": "2031-01-01T12:05:00Z",
    "resolution_status": "synthetically_resolved",
    "winning_side": "up",
    "observed_snapshot_count": 46,
    "normalized_second_count": 300,
    "live_tick_snapshots": [
      {
        "second": 0,
        "observed_at": "2031-01-01T12:00:00Z",
        "seconds_remaining": 299,
        "up_probability": 0.48,
        "down_probability": 0.52,
        "up_bid": 0.465, "up_ask": 0.495,
        "book_age_ms": 70,
        "is_observed": true,
        "is_resampled": false,
        "quality": "observed"
      },
      … 45 additional captured snapshots
    ],
    "normalized_seconds": [
      … 300 observed or explicitly resampled elements
    ],
    "order_book_samples": [
      {
        "token_side": "up",
        "bids": [{"price": 0.63, "size": 180.0}, … 19 more],
        "asks": [{"price": 0.65, "size": 18.0}, … 19 more]
      }
    ],
    "quality_summary": {
      "observed_seconds": 46,
      "resampled_seconds": 254,
      "max_book_age_ms": 379,
      "coverage_percent": 15.33
    }
  }
]