Bitcoin 5-Minute Market Orderbook Depth — 2026-06-21

On 2026-06-21, full orderbook depth was captured for 286 Polymarket BTC 5-minute Up/Down market rounds — approximately 61,371 bid/ask snapshots totalling 401.7 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

286
Rounds recorded
~61,371
Depth snapshots
401.7 MB
Raw size
1.2¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1782017400_orderbook.jsonl produced 1.59 MB of snapshots — the deepest recording of 2026-06-21. Watch both books evolve from open to resolution: the Up-side spread tightened from 1¢ to 1¢ 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
0.5546.66
0.5456.52
0.5361.38
0.5271.25
0.51254.86
0.5155
0.49185
0.48585
0.47300
0.4635
0.4539.22
0.4473.52
spread1¢
0.4378.64
0.425
0.4303.98
0.39300
0.38275
0.37180
0.36180
0.35155
0.3490
0.3330.13
0.350
0.275
DOWN token
4.98 min remaining
pricesize
0.695
0.6835
0.6765.13
0.6695
0.65190
0.64180
0.63180
0.62275
0.61305
0.6303.98
0.585
0.5773.55
spread1¢
0.56118.52
0.5544.22
0.5435
0.53300
0.52590
0.51185
0.5155
0.49254.86
0.4871.25
0.4761.38
0.4656.52
0.4546.66

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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