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Transaction Malleability

A historical bug allowing third parties to change a transaction's TXID without invalidating the signature. SegWit completely fixed this by separating witness data.

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What is Transaction Malleability?

A historical bug allowing third parties to change a transaction's TXID without invalidating the signature. SegWit completely fixed this by separating witness data.

Why It Matters

Understanding Transaction Malleability is essential for anyone serious about Bitcoin. This concept forms a key building block of how Bitcoin works and why it's valuable.

Key Points

  • This is a core Bitcoin concept at the advanced level
  • Related to: transaction, history, segwit
  • Estimated reading time: 6 minutes
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