Bitcoin 5-Minute Market Orderbook Depth — 2026-10-28

On 2026-10-28, full orderbook depth was captured for 288 Polymarket BTC 5-minute Up/Down market rounds — approximately 59,885 bid/ask snapshots totalling 405.5 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

288
Rounds recorded
~59,885
Depth snapshots
405.5 MB
Raw size
1.1¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1793154000_orderbook.jsonl produced 1.69 MB of snapshots — the deepest recording of 2026-10-28. 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
0.35215
0.34135
0.33160
0.32107
0.31194
0.3197.89
0.29111
0.28158
0.27680.86
0.26356
0.25302
0.24574.69
spread1¢
0.231.38
0.22534
0.21537
0.2169.5
0.19316
0.18504.25
0.17524
0.16488.09
0.15629.34
0.14646
0.13530
0.12207
DOWN token
4.96 min remaining
pricesize
0.88442
0.87550
0.86631
0.85634.34
0.84335
0.83224
0.82297
0.81316
0.8140.5
0.79239
0.7840
0.775
spread1¢
0.76585.69
0.75446
0.74356
0.73301.86
0.72163
0.71116
0.779.14
0.69194
0.68112
0.67160
0.66155
0.65220

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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