SHA256
...., this list will be added as a block to the chain of blocks.
The question is : "How will I know that I completed confirmation for this transactions before this particular validator's confirmed transaction?" Or "how will I know this transaction was completed before this other one?"
This is what PoH helps Solana do.
For each transaction, a timestamp in the form of a hash is given. This hash is created by the hash function SHA256 which is notable to be a one-way hash function ie an input gives a 64 stringed output, if you input the same output it gives another different 64 stringed output.
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