Bitcoin 5-Minute Market Orderbook Depth — 2026-09-26

On 2026-09-26, full orderbook depth was captured for 288 Polymarket BTC 5-minute Up/Down market rounds — approximately 60,398 bid/ask snapshots totalling 394.4 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

288
Rounds recorded
~60,398
Depth snapshots
394.4 MB
Raw size
1.0¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1790460300_orderbook.jsonl produced 1.53 MB of snapshots — the deepest recording of 2026-09-26. 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.

4.97 min left
frame 1/48▸ auto-playing — drag to scrubUp-side spread: 1¢
UP token
4.97 min remaining
pricesize
0.75114
0.7480
0.7340
0.7255
0.7120
0.7810.1
0.6915
0.6815
0.6692
0.655
0.647.03
0.6347.08
spread1¢
0.62757.35
0.61807
0.595
0.5820
0.5765
0.5660
0.55100.76
0.54150
0.53134.6
0.5273.63
0.5151
0.515
DOWN token
4.97 min remaining
pricesize
0.49279
0.48306.63
0.47368.6
0.46384
0.45335.76
0.44295
0.43301
0.42256
0.41256
0.4188
0.391,183
0.38961.35
spread1¢
0.3747.08
0.367.03
0.355
0.345
0.335
0.3258
0.3154
0.3177.1
0.29243
0.28447
0.27264
0.26325

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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