Bitcoin 5-Minute Market Orderbook Depth — 2026-08-17

On 2026-08-17, full orderbook depth was captured for 288 Polymarket BTC 5-minute Up/Down market rounds — approximately 65,297 bid/ask snapshots totalling 401.2 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

288
Rounds recorded
~65,297
Depth snapshots
401.2 MB
Raw size
1.3¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1786928400_orderbook.jsonl produced 1.51 MB of snapshots — the deepest recording of 2026-08-17. 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
0.4655.91
0.4537.66
0.4457.66
0.4316.66
0.4216.66
0.4130.13
0.426.66
0.39416.66
0.3833.32
0.3738.32
0.3693.32
0.35315.14
spread1¢
0.3420.39
0.3120
0.327.5
0.28107
0.2712.5
0.2547
0.2418.5
0.23611
0.2222.73
0.21161.5
0.276
0.195
DOWN token
4.97 min remaining
pricesize
0.77128
0.7676.5
0.75120
0.7459
0.7361.5
0.72140
0.7127
0.744.5
0.6936
0.6816
0.6715
0.6644.64
spread1¢
0.65538.65
0.64189.32
0.63516.32
0.62119.32
0.61102.66
0.679.66
0.5969.66
0.5880.66
0.57111.66
0.56122.66
0.5576.66
0.54140.66

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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