Bitcoin 5-Minute Market Orderbook Depth — 2026-05-08

On 2026-05-08, full orderbook depth was captured for 287 Polymarket BTC 5-minute Up/Down market rounds — approximately 61,566 bid/ask snapshots totalling 407.8 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

287
Rounds recorded
~61,566
Depth snapshots
407.8 MB
Raw size
1.2¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1778220000_orderbook.jsonl produced 1.55 MB of snapshots — the deepest recording of 2026-05-08. 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
0.6478.99
0.6318.44
0.6210
0.6135
0.650
0.5910
0.5820.95
0.5745
0.5670
0.5581.66
0.54130
0.53165.54
spread1¢
0.5297.44
0.5190.58
0.5799.33
0.4976
0.4873.69
0.4735.62
0.4675
0.4572.66
0.4455
0.4355
0.4230
0.4155
DOWN token
4.97 min remaining
pricesize
0.655
0.5975
0.5825
0.5725
0.565
0.5547.66
0.5485
0.5384.99
0.52113.69
0.51110.24
0.5811.27
0.4810
spread1¢
0.47138.05
0.46211
0.4586.66
0.4490
0.4330
0.4260.95
0.4160
0.4277
0.39105
0.3840
0.3738.44
0.3678.99

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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