Post
Topic
Board Development & Technical Discussion
Merits 7 from 3 users
Topic OP
How are individual transactions validated?
by
RedApronPark
on 13/07/2023, 19:34:01 UTC
⭐ Merited by o_e_l_e_o (4) ,ETFbitcoin (2) ,pooya87 (1)
Hi, I'm pretty new to crypto, and am trying to understand some of the technical concepts.

I think I get the concept of how miners run ASICs to find a PoW number that when SHA256 function is applied to the whole block with that number, it results in a working hash to make a valid block.

But they also need to validate each of the transactions within the block, right? And this requires checking the entire history of each of the included users' past transactions to verify that they have enough BTC to make a payment? For up to 2400 transactions per block, that seems very time consuming?

Am I misunderstanding how it works?

I tried to scan various FAQs and videos, but haven't found the answer to this question.

Thanks!