Ethereum: understanding iscoinbase () function
In the Ethereum blockchain, transactions can be classified into two types: coins and coinbase. A transaction with Coinbase is a given transaction that includes an additional entry, knowledge as a “coinbase” or “feee”. This entry is used to pay the Currency Creating Center in the Ethereum network.
The function iscoinbase () in Core Bitcoin allow developers to check whether a given trance is a currency or not. But what does this do exactly? In this article, we will make Iscoinbase () check if it is exactly the provision of examples for Illstrum.
Why check exactly an entry?
In the context of transactions with coinbase, it was essential at the entrance. Here’s White:
- A coinbase transaction includes an additional
tx_in 'entry, is Fe in including.
- If Theee Wee is multiplying in the transaction, it is difficult to establish one, all are parties. The presence of multiple in entrances regarding the fact that the transaction is not a currency.
- By checking whether it is exactly at the entrance, Iscoinbase () ensures that we are transactions on a single tax entry.
Details about implementation
The implementationiscoinbase ()in Bitcoin Core is as follows:
C.
Bool iscoinbase () const {
Return (wine.size () == 1 && wine [0] .predout == null || wine.size () == 2 && wine [0]. = null);
}
`
Here's what happens:
- Vin.size ()
returns the number of entrances to the transaction.
- (Vin.size () == 1)
check if there is exactly at the entrance. If not, the function immediately returns fake.
- & & wine [0] .PRAVOOUT == NULL ‘checks whether the first entrance (which goes down to the Entry) is null. If it is not null, then we have a multiple transaction, and the function returns.
- The second condition
() == 2 && wine [0] put). Howver, this condition One verifies if the first output rises to the ENT input; It does not guarantee that it is not an additional coinbase entry.
Conclusion*
In Hummary, theiscoinbase () functioncheck an entry into arsaction, because having multiputs can be part of the same currency or not. By checking this contribution of taxes and that total language (an output and an exit), iscoinbase () ensures an exact accurate of co -Base.
When together with the development of Ethereum, knowing how the functionsiscoinbase () can help you throw a robust and reliable code that will be coincided.