Let’s talk about hash functions.
Ethereum uses Keccak-256. Keccak-256 differs from the finalized SHA3-256 in its padding rules, so they produce different results.
Here’s another point worth considering: A block header records the hash of the previous block. Changing any historical block changes its hash, which means all subsequent blocks have to be recalculated.
After downloading wallet software, it’s a good idea to check its SHA-256 checksum against the one published officially to make sure the installer hasn’t been tampered with.
Mining $BTC is essentially the continuous calculation of SHA-256 hashes to find a result that meets the difficulty requirement. Current: 79945.63.

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