Blocks are data structures within the blockchain database, where transaction data in a cryptocurrency blockchain are permanently recorded. A block?records some or all of the most recent transactions not yet validated by the network. Once the data are validated, the block is closed. Then, a new block is created for new transactions to be entered into and validated.
A block is thus a permanent store of records that, once written, cannot be altered or removed.
A: is data structure within the blockchain database, where transaction data in a cryptocurrency blockchain are permanently recorded
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