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Welcome to the Developer Q&A for the MultiChain blockchain platform.

Please feel free to ask questions about the platform to receive answers from the MultiChain developers or other members of the community.

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OP_RETURN for data, prunable?

+1 vote

Hi, when using OP_RETURN to store arbitrary data, can the node be configured to prune that data?

Ideally the data should not be part of the data used to generate the hash of the transaction similar to Bitcoin.

op_return

asked Feb 2, 2017 by purtoni

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1 Answer

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In MultiChain, as in bitcoin, the OP_RETURN data is definitely used to generate the hash of the transaction, otherwise we would have a serious security problem. However the output containing the OP_RETURN is pruned from the UTXO (unspent transaction output) set, in order to save space in the UTXO database.

answered Feb 2, 2017 by MultiChain

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