Ethereum’s Transaction IDS (TXIDS) are used to identify each unique transaction that occurs on the Ethereum Network. However, finding duplicate txids is a complex problem due to several factors:
- Transaction Id Generation : The Genesis Block is the starting point of the Ethereum blockchain, and its txid is fixed. Any subsequent transactions will have a different txid than their genesis counterpart. This means that every transaction on the network has a unique txid.
- These change can affect the txid, but they do not guarantee duplicates. However, mutated transactions often involve changes to data such as gas costs and block numbers.
Genesis Blocks and subsequent transactions. Here are some steps you could take:
Step 1: Analyze Genesis Blocks
* Find the Genesis Block : obtain a copy of the Ethereum Blockchain’s Genesis Block.
. Compare each Transaction’s Txid Against the Genesis Txid.
Step 2: Analyze Subsequent Transactions
* Find a match with a previous block number :
* Use a hash table or similar data structure : Store Each Transaction’s Txid and its Corresponding Block Number. When comparing, use the block number as the primary key.
Step 3: Mutated Transactions
.
* Identify potential duplicates
:
Example Code
Below is an example of how you can use the ethers.js library to query all transactions on the Ethereum Network and detect duplicate txids:
`JavaScript
Const ethers = Require (‘Ethers’);
// Function to Query All Transactions on the Ethereum Network
Async Function GetTransactions () {
Const provider = new ethers.providers.jsonrpcprovider (“
Const accounts = Await provider.getaccounts ();
Const txids = [];
For (Const Account of Accounts) {
try {
Const blocknumber = Await provider.getblocknumber (account.address);
Const txs = Await provider.gettransactionlogs (account.address, “latest”, null);
for (Const tx of txs) {
if (txids.length === 0 || txids [txids.length – 1]! == tx.id) {
txids.push (tx.id);
}
}
// Optional: Mutated Transactions
Const mutatatedtx = Await provider.gettransactionlog (account.address, “latest”, null);
if (mutatatedtx.gascost> txs [0] .gascost || mutatatedtx.blocknumber
txids.push (mutatatedtx.id);
}
} Catch (Error) {
// Handle Errors As Needed
}
}
Return Txids;
}
// Example usage:
Async Function Main () {
Const txids = Await GetTransactions ();
console.log (“duplicate txids:”, txids);
// Optional: Mutated Transactions
Const mutatatedtxid = Await GetMutatatedTransaction (TXIDS);
if (mutatatedtxid) {
console.log (“mutated transaction found:”, mutatatedtxid);
}
Return Null;
}
Main (). Catch ((Error) => {
Console.Error (Error);
});
`
This code snippet demonstrates how to query all transactions on the Ethereum network and detect duplicate txids. However, you may need to adapt it based on your project’s requirements.