Bitcoin 5-Minute Market Orderbook Depth — 2026-05-09

On 2026-05-09, full orderbook depth was captured for 288 Polymarket BTC 5-minute Up/Down market rounds — approximately 61,971 bid/ask snapshots totalling 399.1 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

288
Rounds recorded
~61,971
Depth snapshots
399.1 MB
Raw size
1.2¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1778290200_orderbook.jsonl produced 1.47 MB of snapshots — the deepest recording of 2026-05-09. 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
0.635
0.625
0.615
0.612.5
0.5910
0.5820
0.5715
0.5610
0.5528.32
0.5420
0.53118.74
0.5252.08
spread1¢
0.51423.22
0.569.51
0.4910
0.485
0.4741.39
0.4630
0.4534.32
0.4415
0.4315
0.4220
0.4110
0.412.5
DOWN token
4.98 min remaining
pricesize
0.612.5
0.5910
0.5820
0.5720
0.5615
0.5549.32
0.5430
0.5341.39
0.525
0.5115
0.565.34
0.49442.72
spread1¢
0.48100.08
0.4728.74
0.4630
0.4538.32
0.4415
0.4315
0.4220
0.4110
0.412.5
0.395
0.385
0.375

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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