Source of truth: Coinbase BTC-USD hourly data.

Candle used: The 1-minute candle at 11:59 PM ET on September 21, 2025.

Equivalent in UTC: Sep 22, 2025, 03:59 UTC

Price used: The “Close” value of that candle

Rounding math:

• Math.round(115999.49) → 115999

• Math.round(115999.50) → 116000

Resolution Date Time: Sep 21, 2025, 11:59 PM ET