Bitcoin 5-Minute Market Orderbook Depth — 2026-04-28

On 2026-04-28, full orderbook depth was captured for 286 Polymarket BTC 5-minute Up/Down market rounds — approximately 63,422 bid/ask snapshots totalling 384.2 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

286
Rounds recorded
~63,422
Depth snapshots
384.2 MB
Raw size
1.7¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1777344600_orderbook.jsonl produced 1.49 MB of snapshots — the deepest recording of 2026-04-28. 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.

4.96 min left
frame 1/48▸ auto-playing — drag to scrubUp-side spread: 1¢
UP token
4.96 min remaining
pricesize
0.7145
0.69400
0.6810
0.67375
0.6619
0.65289
0.64110.88
0.6385
0.625
0.61105
0.6258
0.59183.18
spread1¢
0.58175.05
0.5785
0.5648
0.55571.52
0.54805.97
0.53401.5
0.52865.99
0.51139.09
0.51,976.27
0.49151
0.48157.91
0.47142.01
DOWN token
4.96 min remaining
pricesize
0.5327.01
0.52167.91
0.51201
0.51,976.27
0.49139.09
0.48940.99
0.47401.5
0.46805.97
0.45571.52
0.4448
0.4385
0.4246
spread1¢
0.41183.61
0.4288
0.39100
0.3765
0.3693.88
0.35275
0.3455
0.33365
0.325
0.31390
0.3140
0.2960

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.

← 2026-04-27All days2026-04-29 →
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