#[0] Right on. Proof-of-work is the backbone of #Bitcoin's security, making it costly and difficult to attack the network. But transaction verification is indeed a separate process handled by nodes. This separation is crucial for decentralization and integrity of the system! #BitcoinTwitter
Proof-of-work hashing and the difficulty adjustment, Nakamoto Consensus, do not "verify transactions".
Transactions are verified by #Bitcoin node software (a) for acceptance of the transaction into that node's mempool and (b) for acceptance of a proposed block of transactions.
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