Bitcoin 5-Minute Market Orderbook Depth — 2026-05-28

On 2026-05-28, full orderbook depth was captured for 184 Polymarket BTC 5-minute Up/Down market rounds — approximately 38,962 bid/ask snapshots totalling 260.6 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

184
Rounds recorded
~38,962
Depth snapshots
260.6 MB
Raw size
1.1¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1779943200_orderbook.jsonl produced 1.46 MB of snapshots — the deepest recording of 2026-05-28. 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.

4.99 min left
frame 1/48▸ auto-playing — drag to scrubUp-side spread: 1¢
UP token
4.99 min remaining
pricesize
0.6324
0.6219.58
0.6139
0.653
0.5918
0.5823.95
0.5718
0.5634.34
0.5548
0.5488.43
0.5335
0.521.11
spread1¢
0.5116.74
0.568.05
0.49356.62
0.4828.42
0.4757
0.4678.43
0.4538
0.4434.36
0.4318
0.4228.95
0.4128
0.433
DOWN token
4.99 min remaining
pricesize
0.633
0.5928
0.5828.95
0.5718
0.5634.36
0.5538
0.5478.43
0.5357
0.5228.42
0.51381.62
0.568.05
0.498
spread1¢
0.48143.86
0.4743
0.4688.43
0.4548
0.4434.34
0.4318
0.4223.95
0.4118
0.458
0.3939
0.3819.58
0.3724

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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