According to coinbase

Resolution criteria

• Resolves Yes if Coinbase Exchange’s BTC-USD spot price exceeds $115,000 at any time on August 27, 2025 (00:00:00–23:59:59 UTC). “Exceeds” means strictly greater than $115,000.

• Primary check: Coinbase Exchange 5‑minute candles for BTC-USD over 2025‑08‑27; if any candle’s high > 115000, resolve Yes; otherwise No. Example query: https://api.exchange.coinbase.com/products/BTC-USD/candles?start=2025-08-27T00:00:00Z&end=2025-08-28T00:00:00Z&granularity=300. Candle schema is [timestamp, low, high, open, close]. (docs.cdp.coinbase.com)

• Source of truth is Coinbase data only (BTC-USD spot). If Coinbase’s public endpoints are temporarily unavailable on the day, resolution waits until the data is accessible. (docs.cdp.coinbase.com)

Background

• Coinbase’s public docs define the candles endpoint and fields used for the “high” value referenced above. (docs.cdp.coinbase.com)

• On Coinbase, Bitcoin’s all‑time high was reported at ~$124,290 on August 14, 2025 (useful for context vs the $115k threshold). (coinbase.com)

Considerations

• Time is measured in UTC using Coinbase’s timestamps; other exchanges, ETFs, or indices are irrelevant. (docs.cdp.coinbase.com)

• Exact prints at $115,000.00 do not count; any trade above $115,000.00 does.

• Pair is BTC-USD on Coinbase Exchange (not USDT/USDC or derivatives). (docs.cdp.coinbase.com)