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Hi DDK Stakeholders, We recently posted a Quiz about changing erroneous blockchain transactions and received a resounding response. It was great to see so many people participating and sharing their knowledge. Now you all must be waiting for the right answer and we are revealing it in this post. Refer to the poster below to find the answer! Info: Blockchain transaction is immutable records. No participant can change or tamper with a transaction after it’s been recorded to the shared ledger. If a transaction record includes an error, a new transaction must be added to reverse the error, and both transactions are then visible.