Bitcoin 5-Minute Market Orderbook Depth — 2026-09-15

On 2026-09-15, full orderbook depth was captured for 211 Polymarket BTC 5-minute Up/Down market rounds — approximately 44,537 bid/ask snapshots totalling 296.5 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

211
Rounds recorded
~44,537
Depth snapshots
296.5 MB
Raw size
1.0¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1789511100_orderbook.jsonl produced 1.49 MB of snapshots — the deepest recording of 2026-09-15. Watch both books evolve from open to resolution: the Up-side spread tightened from 1¢ to 0¢ as the outcome crystallised. Bars show size at each level, scaled within each ladder.

4.96 min left
frame 1/48▸ auto-playing — drag to scrubUp-side spread: 1¢
UP token
4.96 min remaining
pricesize
0.53371
0.52356
0.51383.44
0.5361.42
0.49344.2
0.48220
0.47161
0.461,072
0.45161
0.44194.33
0.43332.58
0.42671
spread1¢
0.41163.77
0.4145
0.39131
0.38239.78
0.37242.78
0.36337.78
0.35339.83
0.341,369.78
0.33464.78
0.32464.78
0.31444.78
0.3462
DOWN token
4.96 min remaining
pricesize
0.71487
0.7467
0.69479.78
0.68479.78
0.67479.78
0.661,394.78
0.65467.83
0.64464.78
0.63423.78
0.62444
0.61183
0.686
spread1¢
0.59576.92
0.58674.08
0.57548.58
0.56241
0.55232
0.541,137
0.53306
0.52321
0.51331.95
0.5486.42
0.49458.44
0.48446

Showing 48 sampled snapshots, 12 levels nearest the touch on each side. The raw JSONL carries the complete ladder — every level, every ~1.5 seconds, for both tokens.

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