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Metamask: How to sign a transaction in metamask (EIP 712) with data instead of sending it normally to save gas cost?
Gas cost optimization Metamk: Data transaction signature EIP 712
As a developer working on Ethereum -based projects, it may not be a stranger to gas cost management challenges. Significant tax loss for high gas rates is the need to send a large amount of data through the Ethereum transaction format. However, there is an alternative approach that can help reduce its gas costs: signing transactions in EIP 712.
In this article, we will deepen how to sign the deal in Metamask using EIP 712 and its benefits to optimize the cost of gas.
What is EIP 712?
The EIP 712 (Ethereum 712 Improvement Proposal) is an updated Ethereum standard gas -like version that allows developers to define personalized gas types that can be used in several intelligent contracts. This feature allows for more efficient and scalable interactions between applications built into different circuits.
EIP 712 Configuration Metamask
To use the EIP 712 in the project, it must first be configured in your Metamask wallet. Here are the steps:
- Create or Import Ethereum Account
: Configure a new Ethereum account Metamsk or existing amount.
- Install the required packages : Install `
yyuseting npm or thread:npm install sutters@5 Web3
3
Import the data agreement EIP 712 : Import the data agreement EIP 712 as a file, for example: “Constype} = ask (‘ether/types’); Import’ https: //raw.githubusercontent.com/ethereum/eip -712/master/spec.json ‘;
- Define the customized gas type
: Define, for example, in a deal to use the type of gas, such as:
`JSON
{
"Name": "Mycustomgastype",
"Description": "Personalized gas type for my NFT project",
"Data": {
"Value": 100,
"Type": gastype.bytes32
}
}
sign transactions with data EIP 712
Now that it has a personalized gas, it is time to sign the transaction using the data instead of sending the data normally. Here is an example:
JavaScript
Features async Setaditalantadata (NFTCARDAddress) {
CONST TX = {{
From: "His address Ethereum",
Nance: Web3.eth.Gettransacticount ('His address Ethereum'),
Gasprice: Web3.Towei (20, 'Gwei'), // Determines the price of gas 20 GWEI (2.5 ETH)
Gas: 2000,
Data: [
{
"Data": [
{
"Type": gastype.bytes32,
"Value": New uint8array ([1, 2, 3, 4])
},
{
"Type": Gastype.uint256,
"Value": '1234567890abcdef'
}
]
}
]
A: Nftcardadsss
};
Const Sign = ALEA Web3.eth.acounds.Signtransaction (TX);
return {... tx, signed: signature.rawtransaction};
}
// sign the transaction with data EIP 712
CONST TX = Setaddionial Metadata ('0xyournftcardaddress');
Const Signedtx = waiting Metamsk.sendtransaction (TX);
Console.log (SignmedTX);
`
In this example, we define a new type of personalized gas “Mycustomgastype” and we use it to sign the transaction with the data. The data includes two values: 4 -byte integer and integer without 256 -bit mark.
EIP 712 Signature Benefits **
Signature Transactions with EIP 712 offers several benefits:
* Reduced gas costs : Since you do not send a large amount of data through the Ethereum transaction format, it can reduce gas expenses.
* Improved scalability : Using EIP 712 Personalized Gas Benefits, it can improve the scalability of its application.
* More flexibility : With EIP 712, you can define a wide range of personalized gas types for different cases.
Conclusion
The EIP 712 transaction firm is an effective way to optimize gas costs while maintaining the use of Ethereum -based applications.
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