Have all hashes of unlocked difficulty levels of cryptocurrencies been mined?

by Waleed Qidan   Last Updated August 23, 2018 00:27 AM

I'm wondering if all the hashes of a previously unlocked difficulty level of a cryptocurrency, such as

0000000000000000xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx BTC

, have been completely mined, where x is a placeholder for a constituting HEX digit, such that all the possible combinations of digits in that difficulty level have been mined.

Answers 1

No, and this will not happen in the foreseeable future.

Any given hash calculation will result in any one of 2^256 possible numbers. That means, the odds of finding any one exact number is 1/2^256.

Even at today's hashrate of ~47000000 TH/s, it would take you 7.812×10^49 years to find a preimage for every one of those 2^256 numbers, assuming each hash you find is unique (no collisions).

Raghav Sood
Raghav Sood
August 23, 2018 00:26 AM

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