Bitcoin 5-Minute Market Orderbook Depth — 2026-10-09

On 2026-10-09, full orderbook depth was captured for 233 Polymarket BTC 5-minute Up/Down market rounds — approximately 48,760 bid/ask snapshots totalling 325.7 MB of JSONL. Each snapshot lists every price level and size for both the Up and Down side.

233
Rounds recorded
~48,760
Depth snapshots
325.7 MB
Raw size
1.1¢
Avg opening spread
Up side, best ask − best bid

Replay the day's most active round

btc-updown-5m-1791544800_orderbook.jsonl produced 1.64 MB of snapshots — the deepest recording of 2026-10-09. 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
0.71467.63
0.7459.63
0.69468.63
0.68485.63
0.67463.63
0.661,016.63
0.65471.63
0.64439.98
0.63241
0.62346
0.611,078
0.620
spread1¢
0.591,558
0.58388
0.57796.78
0.56135
0.5598.18
0.541,048
0.53160
0.52100
0.51145
0.5170
0.49125
0.4877.66
DOWN token
4.96 min remaining
pricesize
0.52349.66
0.51175
0.5226
0.49225
0.48318
0.47170
0.461,088
0.45113.18
0.44120
0.43838.78
0.42555
0.411,808
spread1¢
0.433.93
0.38116.31
0.3735
0.36221
0.35179.63
0.34607.63
0.33274.63
0.32274.63
0.31270.63
0.3254.63
0.29264.63
0.28259.63

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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