Ethereum: Getting error “Contract-transaction-hash=”” does not match provided contract-tx-hash=””

Ethereum Transaction Error: Contract and Transaction Hash Mismatch

As a developer using the Ethereum protocol suite to create, propose, and execute transactions through your backend application, you are encountering a specific error message that prevents your application from processing certain types of transactions. Specifically, when you try to perform transactions on the Ethereum network using tokens such as Matic and ZED, you receive an error stating that “Contract-transaction-hash=…” does not match the provided contract-tx-hash=”…”.

In this article, we will delve into the details of the issue and explore possible solutions to help you resolve it.

What is a transaction hash?

Before we dive into the error message, let’s quickly understand what a transaction hash is. A transaction hash (txHash) is a unique string that represents the hash value of a transaction on the Ethereum network. It is used for various purposes, such as verifying the integrity of transactions and tracking transactions across different block heights.

Contract-transaction-hash vs. given-contract-tx-hash

To get things straight, here are some of the main differences between the two hashes:

• Contract-transaction-hash (txHash)

  : This is the hash value of a specific contract or function call on the Ethereum blockchain.

• Provided-contract-tx-hash (txHash): This refers to the hash value of a transaction that was proposed or executed under another contract, but not in the current block.

Error message

Given the context of your issue, it seems like there are two separate issues:

• The error message indicates an inconsistency between the provided contract-tx-hash and the txHash associated with the specific transaction.

• There are also issues with transactions on tokens such as Matic and ZED.

Possible Solutions

To resolve this issue, we will focus on two possible solutions:

Solution 1: Verify the transaction hash

First, let’s make sure that you are using the correct transaction hash values. Here are some steps to verify the hash:

• Make sure that you are using the same contract address for all transactions.

• Double-check that the transaction type and function call are correctly identified in your code.

• If you are using a smart contract or library, review its documentation to ensure that it is generating accurate txHash values.

Solution 2: Update the Ethereum client library

Another possible solution is to update the Ethereum client library to use the latest version. This may resolve any issues with hash generation or compatibility with new versions of the Protocol Suite.

To update the client library:

• Install the latest version of the Ethereum client library using npm or yarn.

• Verify that you are using a compatible version by checking the documentation for your specific library and protocol suite.

• Update your code to use the recommended txHash values.

Conclusion

The error message “Contract-transaction-hash=…” does not match the provided contract-tx-hash=”…” is an indication of a problem with the transaction hash or the Ethereum blockchain itself. By verifying the transaction hash, updating the Ethereum client library, and reviewing the accuracy of your smart contracts, you can resolve this issue and continue processing transactions successfully.

If you are still experiencing issues after implementing these solutions, please provide more information about your code and environment and I will try to help further.