Bitcoin 5-Minute Market Orderbook Depth — 2026-10-19

On 2026-10-19, full orderbook depth was captured for 288 Polymarket BTC 5-minute Up/Down market rounds — approximately 60,379 bid/ask snapshots totalling 405.8 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

288
Rounds recorded
~60,379
Depth snapshots
405.8 MB
Raw size
1.1¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1792411500_orderbook.jsonl produced 1.62 MB of snapshots — the deepest recording of 2026-10-19. 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
0.73852
0.72855
0.71823
0.7811
0.69815
0.68790
0.67808
0.66610
0.65919
0.64148
0.63271.53
0.62368.87
spread1¢
0.61408.29
0.6342
0.59127
0.58205
0.57216
0.56205
0.55202
0.54205
0.53347
0.52347.47
0.51324.3
0.5359
DOWN token
4.97 min remaining
pricesize
0.5414
0.49504.3
0.48478.47
0.47478
0.46337
0.45330
0.44278
0.43603
0.42160
0.41127
0.4114
0.3926
spread1¢
0.38653.87
0.37409.53
0.36570
0.35644
0.34696
0.33885
0.32918
0.31889
0.3886
0.29918
0.28951
0.27979

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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