If the simple average of the sixty seconds of CF Benchmarks' ETHUSD_RTI before 12 AM EST is above 4999.99 at 12 AM EST on Jan 1, 2027, then the market resolves to Yes. Not all cryptocurrency price data is the same. While checking a source like Google or Coinbase may help guide your decision, the price used to determine this market is based on CF Benchmarks' corresponding Real Time Index (RTI). At the last minute before expiration, 60 RTI prices are collected. The official and final value is the average of these prices.