Hi Antoine,<br /><br />Regarding potential malleability pertaining to blocks with only 64 byte transactions, why is not a deserialization phase check for the coinbase input as a null point not sufficient mitigation (computational infeasibility) for any implementation that desires to perform permanent invalidity marking?<br /><br />Best,<br />Eric<div><br /></div><div>ref: <a href="https://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20190225/a27d8837/attachment-0001.pdf">Weaknesses in Bitcoin’s Merkle Root Construction</a><br /></div>

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