Ethereum: decoding P2WSH scripts and derivations of addresses
As a developer that builds decentralized applications (DAPPS) on the Ethereum blockchain, understanding the interaction with scripts is of crucial importance. One of the most complex aspects of the Ethereum script is P2WSH (proof-of-work-work script hashing), which enables the creation and administration of non-fung tokens (NFTS). In this article we will deal with the world of P2WSH scripts and examine how an address is derived that is assigned to a certain testnet transaction -id.
Understand P2WSH scripts
P2WSH is a blockchain-based scripting language with which developers can create custom logic for your NFTs. It is based on the Ethereum Virtual Machine (EVM) and enables the execution of scripts as if they were used at the main negotiations. When creating a NFT you have to define a P2WSH script with certain functions and parameters.
Submit a scripting address from the testnet transaction -id
In order to derive an address that is assigned to a certain testnet transaction -id, we follow the following steps:
- Create a new Testnet letter bag : Create a new wallet with a tool like truffles or myether wallet on the Ethereum test.
- Download the script : Download the P2WSH script with
Getscript ()in your wallet.
- Get the transaction -id : Receive the testnet transaction -id for the specified TXID.
- Create an account
: Create a new account in your wallet with
CREACTONACCOUNT ().
Here is a sample code snippet that demonstrates these steps:
JavaScript
Const Web3 = demands (‘Web3’);
Const web3 = new web3 (new web3.providers.httpprovider (‘http: // localhost: 8545’)));
// Download the testnet transaction -id and the script
TXID = ‘6717C8971DCCBF826790EFC16FB357F1E225FED3448247B8556C9F13A6C0CE42’;
script = web3.eth.script ({from: 0x …}); // Download the P2WSH script
// Create a new account
const account = web3.eth.accounts.create ();
// Get the transaction -id for the specified TXID
txinfo = web3.eth.
// submit an address that is assigned to the transaction -id and the script
Const DerivatedTeaddress = web3.eth.accounts.Deriveccount (script.address, txinfo.hash, txinfo.recePT);
`
In this example we create a new account with Creataccounts () and then load the testnet transaction -id in our wallet. We use Gettransactioninfo () to get the hash of the transaction that contains the specified TXID, which is used as input for the “DeriveAccount ()method.
P2WSH script parameter
When creating a P2WSH script, you have to specify several parameters using the "Params" object. Each parameter should be an object with the following structure:
Json
{
“Name”: “Your_Name”,
“Address”: “0x …”,
“Type”: “function”
}
`
Here is an example of a simple P2WSH script that extracts the name and address of the sender:
`JavaScript
Const Web3 = demands (‘Web3’);
Const web3 = new web3 (new web3.providers.httpprovider (‘http: // localhost: 8545’)));
// Download the P2WSH script into your wallet
Const script = web3.eth.Script ({from: 0x …}); // Download the P2WSH script
// Create a new account
const account = web3.eth.accounts.create ();
// Get the transaction -id for the specified TXID
txinfo = web3.eth.
// submit an address that is assigned to the transaction -id and the script
Const DerivatedTeaddress = web3.eth.accounts.Deriveccount (script.address, txinfo.hash, txinfo.recePT);
`
Diploma
In this article we examined how a P2WSH script address can be derived from a certain testnet transaction -id. If you understand the basics of P2WSH scripts and use tools such as truffles or myether wallet, you can create a custom logic for your NFTS on the Ethereum blockchain.
Remember to always keep your wallet safe and load your testnet transaction -id and your script with a reputable tool.
Note: This is just a basic example, and actual P2WSH scripts may require more complex logic.
