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Inventor of Merkle treesCryptography foundations✓ Verified
Ralph Merkle
His hash trees structure every Bitcoin block.
Known as Ralph MerkleActive Jan 1979 →
Why they matter
Bitcoin blocks commit to their transactions through a Merkle root, enabling compact proofs and Simplified Payment Verification. Merkle's decades-old idea is load-bearing in every block.
Profile
A founder of public-key cryptography who invented the Merkle tree (hash tree) in the late 1970s — a structure for efficiently and securely verifying large data sets. Reference [7] in the Bitcoin white paper.