Bitcoin 5-Minute Market Orderbook Depth — 2026-07-28

On 2026-07-28, full orderbook depth was captured for 288 Polymarket BTC 5-minute Up/Down market rounds — approximately 60,807 bid/ask snapshots totalling 410.6 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

288
Rounds recorded
~60,807
Depth snapshots
410.6 MB
Raw size
1.1¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1785252000_orderbook.jsonl produced 1.53 MB of snapshots — the deepest recording of 2026-07-28. 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.

4.98 min left
frame 1/48▸ auto-playing — drag to scrubUp-side spread: 1¢
UP token
4.98 min remaining
pricesize
0.62139.94
0.6179.69
0.6125.75
0.59109.09
0.58125.29
0.5778.86
0.56129.68
0.55129.28
0.54153.39
0.53223.02
0.5272.67
0.515.27
spread1¢
0.5383.82
0.49243.27
0.4872.67
0.47108.02
0.46146.39
0.45212.28
0.44218.13
0.43158.86
0.42366.29
0.41320.77
0.4326.25
0.39279
DOWN token
4.98 min remaining
pricesize
0.59394.25
0.58327.25
0.57255.95
0.56175.63
0.55192.89
0.54273.51
0.53133.08
0.52333.5
0.51406.04
0.5431.83
0.49165
0.48859
spread1¢
0.47155.52
0.46299.54
0.45152.32
0.44173.07
0.43520.81
0.42120.89
0.41201.02
0.4199.04
0.39201.74
0.38196.31
0.37322.05
0.36420

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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