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A comment on 402 Payment Required, and why micropayments are doomed. Parent comment

Re:402 Payment Required, and why micropayments are doomed by gruez on Tuesday May 19, 2020 @07:51PM (#23241735)
>it takes a lot of energy to commit a BTC transaction to the blockchain

This is a misunderstanding of how mining works. It takes virtually zero energy to create a block (ie. commit a transaction). However, it takes massive amounts of energy for your block to be considered valid. This is because each block also comes with a block subsidy (currently 6.25BTC), which many miners are competing for.

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Re:402 Payment Required, and why micropayments are doomed by littlestymaar on Wednesday May 20, 2020 @04:17AM (#23244536)
I don't think the OP is misunderstanding anything, but you seems to be: the proof of work occurs at the creation of the block (which doesn't really mean “commit a transaction” but instead “acknowledge a bunch of transactions requested by users”), the “validation” comes from other miners adding more blocks to yours (the “chain” thing).
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