Bitcoin 5-Minute Market Orderbook Depth — 2026-07-18

On 2026-07-18, full orderbook depth was captured for 288 Polymarket BTC 5-minute Up/Down market rounds — approximately 59,576 bid/ask snapshots totalling 403.4 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

288
Rounds recorded
~59,576
Depth snapshots
403.4 MB
Raw size
1.1¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1784411400_orderbook.jsonl produced 1.49 MB of snapshots — the deepest recording of 2026-07-18. 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
0.5999.52
0.5868.04
0.5737.61
0.5651.68
0.55375.28
0.54525.82
0.5357.4
0.5229.67
0.5170
0.510
0.4948.79
0.48376.99
spread1¢
0.4764.11
0.46129.28
0.45385.28
0.4461.68
0.4342.61
0.4253.04
0.4194.52
0.429
0.3911.25
0.38111.25
0.3660
0.355
DOWN token
4.98 min remaining
pricesize
0.655
0.6460
0.62111.25
0.6111.25
0.629
0.5994.52
0.5853.04
0.5742.61
0.5661.68
0.55385.28
0.54134.28
0.5354.67
spread1¢
0.52406.99
0.5148.79
0.510
0.4970
0.4829.67
0.4757.4
0.46525.82
0.45375.28
0.4451.68
0.4337.61
0.4268.04
0.4199.52

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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