Verification whether spent by Ethereum **

Blockchain’s main Blockchain book is a way to check that the operation of the operation has been released. In this article, we will examine how to check that the Etherrum withdrawal is released using the RPC client.

What is UTXO?

Before we dive into the decision, we quickly look at what UTXO is (undeniable output of the operation). UTXO is a transaction that has not yet been consumed or filled, and it contains all the necessary expenditure information. Consists of:

• A TXID (Operation ID)

• A vsize '(number of entrances)

• Aconnected

• Set the Txinrang address associated with surgery

RPC Customer

To perform this inspection, we will use the RPC customer, such as Bitcoin-Cli. You can install it in your Ethereum knot or download as a separate tool.

`Bash

Install Bitcoin-Cli (in most Linux distribution)

SUPO APT-GET UPDATE && SUDO APT-ATRAIME BITCOIN-Cli

Windows:

Git Clone

CD “Go -eethereum”

Make.exe Construction Deps && Make.exe Permit

./release/bitcoin-u

`

CODE EXAMPLE

Here's an example of using RPC customer to check for output:

Python

Imports JSON

Def Get_transation_output (TX_HASH, Arrow):

Get surgery output from Blockchain

Answer = Bitcoin-Cli.Gettransactionunutput (TX_HASH)

Parse json reply

Output = JSON.LOADS (Reply [‘Result’])

Check UTX output and has been released

Utxo = Next ((o – o Output [‘output’] if o [‘type’] == ‘consumption’)

If not utxo or Utxo [‘Mint’]! = Arrow:

return to falsely

If this is consumption, make sure the operation has been completed

TXHASH = Bitcoin_Cli.Gettransactionutput (TX_HASH) [‘txid’]

Answer = Bitcoin-Cli.GetblockBynumber (0)

Get the latest block

Block = JSON.LOADS (Answer [‘Result’])

For the block in the block [‘blocks’]:

To get out of the block [‘get out’]:

If exit [‘type’] == ‘consumption’ and utxo [‘Mint’] == Index:

return to falsely

Return the truth

Example of use

Tx_hash = “0x1234567890abcdef”

Change the actual bag -om operation

Arrow = 10

Change the desired consumer index

result = get_transation_output (tx_hash, arrow)

Print (“Exit is released:”, result)

Exit: True or false

``

Conclusion

Check that the output of Ethereum is an essential step in understanding how to handle it using Blockchain. With a RPC customer like Bitcoin-Cli, you can easily check that the exit consumes JSON response and checks important information.

Remember to change the variable Tx_hash index with real values ​​from your Ethereum operation or consumption. This example uses a simple approach based on wire, but it may not remove all border cases. In real scenarios, you would probably like to use stronger clearing methods to process possible changes in the output structure and complexity.