Bitcoin 5-Minute Market Orderbook Depth — 2026-10-21

On 2026-10-21, full orderbook depth was captured for 284 Polymarket BTC 5-minute Up/Down market rounds — approximately 59,670 bid/ask snapshots totalling 402.7 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

284
Rounds recorded
~59,670
Depth snapshots
402.7 MB
Raw size
1.1¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1792563300_orderbook.jsonl produced 1.73 MB of snapshots — the deepest recording of 2026-10-21. 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
0.77384
0.76805
0.75788
0.74740
0.73627
0.72521
0.71565
0.7516
0.69799
0.68400
0.67738
0.66305.59
spread1¢
0.65286.98
0.64171
0.6361
0.6281
0.6166
0.6228
0.5961
0.5866
0.5766
0.5661
0.5561
0.5461
DOWN token
4.98 min remaining
pricesize
0.4661
0.4561
0.4461
0.4366
0.42191
0.41316
0.4103
0.3966
0.38141
0.37116
0.36111
0.35158.38
spread1¢
0.34309.07
0.33846
0.32516
0.311,049
0.3516
0.29545
0.28501
0.27461
0.26740
0.25748
0.24765
0.23384

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.

← 2026-10-20All days2026-10-22 →
Want this day — and every other one?

The full archive includes all 43,671 BTC files plus every other dataset.

Free sampleGet the archive — $15