# Transaction id generation

**URL:** <https://forum.dfinity.org/t/transaction-id-generation/43130>\
**Category:** JavaScript\
**Created:** [March 29, 2025, 9:59am UTC](https://forum.dfinity.org/t/transaction-id-generation/43130 "2025-03-29T09:59:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![adarsh312](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/adarsh312/32/25707_2.png) [@adarsh312](https://forum.dfinity.org/u/adarsh312)\
**Post date:** [March 29, 2025, 9:59am UTC](https://forum.dfinity.org/t/transaction-id-generation/43130/1 "2025-03-29T09:59:05Z")

</div>

What type of topic is this?  
Discussion | Support

I want to create a transaction id for the given transaction, i am getting 3f41f7df29fe43812ac704e4c09c9bc4fd08944f35cdbe4eb6a626bc140dc0af  
but the actual tx id is f8d31957b423a58d4f380f484ebee7894ae7019a6bbac98d7fdf2de0255c54d5

below is the code  
class Transaction {  
constructor(from, to, optionalField, amount, fee, memo, createdAtTime) {  
this.from = from;  
this.to = to;  
this.optionalField = optionalField; // This could be null or undefined in JavaScript  
this.amount = amount;  
this.fee = fee;  
this.memo = memo;  
this.createdAtTime = createdAtTime;  
}

// Hashing logic remains the same  
hash() {  
const transactionData = `${this.from}:${this.to}:${this.optionalField}:${this.amount}:${this.fee}:${this.memo}:${this.createdAtTime}`;  
return crypto.createHash(‘sha256’).update(transactionData).digest(‘hex’);  
}  
}

// Example usage:

const from = “47867f2cfb85094275c847435fa10cad54a813eba7e6a9bc3538aa2f537f1d73”;  
const to = “a1c60efca988c411cd7bc5e481364b9c94caebb24c00e01db269e3a0541ee498”;  
const amount = 10;  
const fee = 10000;  
const memo = "1743238593302000000;  
const createdAtTime = 1743238593302000000;  
const optionalField = null;

// Create a new transaction  
const transaction = new Transaction(from, to, optionalField, amount, fee, memo, createdAtTime);

// Get the transaction hash  
const transactionHash = transaction.hash();

// Output the hash  
console.log(“Transaction Hash:”, transactionHash);