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.

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).

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