[agscala]

How is the order of transactions finalized in a block before the block has been mined?

[mamoriamohit]

Every transaction is added in the block in the order they happened. Every transaction has a timestamp associated with it.

[sushid]

This is completely untrue. "Transactions are added to the new block, prioritized by the highest-fee transactions first and a few other criteria."

You can read more about this https://bitcoin.stackexchange.com/questions/35697/what-is-cr..., but the TL;DR is when the txs are broadcast by various nodes, the highest fee txs are included first (for the most part) by the miners.