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It is not possible to verify just a single transaction, without knowing the state of the network. To know the state of the network, you must verify all of it's historical transactions (aka, run a full node). So this means it is not possible to just take a single transaction alone, and verify it using some bit of code. Rather, you will need the entire ...


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The Mining process uses the proof-of-work algorithm to generate new bitcoins and protect the network from attack by attackers, such as the publication of an invalid block or the modification of a transaction within a block. . Bitcoin performs the validation of transactions on average every 10 minutes and they are considered "valid" only when the block ...


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A blockchain is a chain. Each block is a link in this chain, that depends on the previous link (block) by definition. If to change block N, all blocks from N until now must be mined again as well. Moreover, if you want to alter a specific transaction, you are limited to only removing it if you do not hold the key(s) used to sign the transaction. If you ...


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