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When a block is mined, for example there is just one single invalid transaction out of shall we say 2000 transactions in a block.
Will they do away with that one transaction and settle for that remaining block or for that one single invalid transaction will they reject the entire block?
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requested Jul 11, 2022 at 20:35
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It is not accepted. In a block, each transaction must be legitimate by itself, however the entire block must be legitimate as nicely. If something is improper concerning the block, it is merely invalid—there isn’t a “partially proper”.
As an instance a miner creates such a block and broadcasts it to their friends. Every full node peer makes an attempt to validate the block and realizes that the block doesn’t comply with the principles. They drop the block, don’t ahead it to their friends, don’t add it to their blockchain, and don’t replace their UTXO set. Relying on how the miner relayed the block to them, they in all probability even drop the connection and ban the miner for sending invalid knowledge. No person else sees the invalid block except somebody posts about it on social media to ridicule the miner…
Will they do away with that one transaction and settle for that remaining block
That’s not how Bitcoin (and every other blockchain based mostly system) works. You can’t ever alter a block. By no means. You may settle for or decline a block, that is it by way of anybody’s choices.
However “altering/omitting/rejecting a single transaction”? That might result in a cascadingly growing change to that block’s Merkle Tree, leading to a unique ultimate hash and subsequently (nearly definitely) requiring a unique nonce. Which is called a very completely different block that simply so occurs to additionally include a variety of the identical transactions. It will nonetheless be a unique block in all different regards, and most significantly: it must be mined utterly individually (aka attempting out completely different nonces). And anybody attempting to mine that comparable however completely different block would most definitely put themselves (or their pool) because the reward-adress, so another factor completely different about that block
answered Jul 12, 2022 at 12:07
Keep in mind, each full node constructs and submits their very own block after which compete to seek out the nonce to their very own block.
That’s to say, full node miners will not be competing over the identical block. This implies even when a block bought rejected attributable to an invalid tx, there might be one other peer who finds a nonce to their very own block which in all probability contains the identical legitimate txs and their block will get accepted on the chain. There is no such thing as a time wasted because of a nasty actor sending an invalid tx.
answered Jul 12, 2022 at 5:13
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