I’m pretty sure the effort (processing power) required to mine a bitcoin is independent of the history of mining
The bitcoin supply is limited by design and as you approach the last bitcoin which could be mined, the effort needed increases. That makes the effort needed dependent on the “history of mining”, or, more precisely, on how many bitcoins have already been mined.
The bitcoin supply is limited by design and as you approach the last bitcoin which could be mined, the effort needed increases. That makes the effort needed dependent on the “history of mining”, or, more precisely, on how many bitcoins have already been mined.
Or more precisely the currant year.