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BitVM Proposes Fix to Bitcoin’s Historical SPV Merkle Tree Bug

BitVM's proposed a fix to a historical SPV bug in Bitcoin’s Merkle tree implementation based on a previous proposal by Sergio Lerner. The fix corrects sibling node calculation and addresses SPV vulnerabilities.

https://bitslog.com
🔗 Simple change to the Bitcoin MERKLEBLOCK command to protect from Leaf-Node weakness in Transaction Merkle Tree

Recently a fix to the Bitcoin Merkle tree design weakness in the RSK’s bridge was built by making invalid SPV proofs whose internal hashes are valid Bitcoin transaction. While this solves the problem, it is by no means a “clean” solution: it creates false-negative cases (with very low probability) and it reduces verification efficiency.