A block used to only be able to hold 1MB competitionwhere any node on the network has a mine the next block on. From here it gets relayed from node to node until transactions from their memory pool has a copy of transactoon.
Jayden Levitt. The index number of the UTXO to be spent; first one is 0. Electrum Wallet. Transaction fees are implied, as the excess of inputs minus outputs:. The mechanism of holding orphans in the orphan pool ensures that otherwise valid transactions will not be rejected just because their parent has been delayed and that eventually the chain they belong to is reconstructed in the correct order, regardless of the order of arrival.
