Bitcoin 5-Minute Market Orderbook Depth — 2026-07-21

On 2026-07-21, full orderbook depth was captured for 288 Polymarket BTC 5-minute Up/Down market rounds — approximately 59,001 bid/ask snapshots totalling 410.5 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

288
Rounds recorded
~59,001
Depth snapshots
410.5 MB
Raw size
1.0¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1784602500_orderbook.jsonl produced 1.6 MB of snapshots — the deepest recording of 2026-07-21. Watch both books evolve from open to resolution: the Up-side spread tightened from 1¢ to 1¢ 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
0.63116.63
0.62143.54
0.61126.12
0.6134.27
0.59116.75
0.5893.37
0.57496.02
0.5695.75
0.55379
0.54290
0.5353
0.5245.53
spread1¢
0.51479.73
0.51,686.58
0.49471.37
0.482,083
0.47136
0.46265
0.45116.47
0.44117.72
0.43112
0.42115
0.4195
0.435
DOWN token
4.96 min remaining
pricesize
0.635
0.5995
0.58115
0.57112
0.56117.72
0.55116.47
0.54265
0.53136
0.522,083
0.51842.37
0.51,468.58
0.49560.7
spread1¢
0.4855.53
0.4753
0.46290
0.4579
0.4495.75
0.43496.02
0.4293.37
0.41116.75
0.4134.27
0.39126.12
0.38133.54
0.37116.63

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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