Usd value at transaction time

[RCasatta]

Without dealing with external data source, it's possible to estimate the bitcoin price at past dates using the algorithm powering
https://utxo.live/oracle/

Would be nice to use it to show USD value of outputs at the date of the transaction

[RCasatta]

Since we know the information is there, another approach is using machine learning to find the price, It would probably be also less easy to game since the algorithm would be under the hood?
input: array of buckets of output values in a day
output: price of the day