Resolve according to https://coinmarketcap.com/currencies/bitcoin/historical-data/
(I believe coinmarketcap use UTC time zone)

Resoles Yes if bitcoin price has dropped below $56789 before a certain date ends

*Traders familiar with my market will know that I usually use Yahoo Finance historical price for resolution source. However, I've noticed occasional delays where it takes over a day for Yahoo Finance to update the end-of-day prices. To ensure clear resolution of this daily market, I've decided to use Coinmarketcap data instead.