This is so interesting! UTXOracle infers the market price of Bitcoin by analyzing real transactions on the Bitcoin chain with the intention of "integer dollar price" (such as transaction output corresponding to 20, 50, 100, etc.). It does not rely on exchange quotes or external data sources, but directly connects to local nodes, obtains blocks and trading data, and then performs statistics and calculations to obtain a daily price. In other words, it uses a large amount of implicit "USD/BTC" exchange rates from actual payment behavior to synthesize the on chain pricing of Bitcoin.