Definition ∞ Data non-repudiation ensures that the sender of information cannot later deny having sent it, nor can the recipient deny having received it. This security property provides undeniable proof of origin and integrity for digital transactions and communications. In blockchain contexts, cryptographic signatures bind a user’s identity to their actions, making it impossible to disclaim participation. It establishes accountability and trust in decentralized networks by creating verifiable records.
Context ∞ Data non-repudiation is a fundamental security attribute heavily relied upon in blockchain technology, underpinning the integrity of digital asset transfers. The ongoing discussion frequently addresses how this principle interacts with privacy concerns, especially in public ledgers where transactions are pseudonymous but verifiable. Future advancements will likely explore zero-knowledge proofs and other cryptographic techniques to balance non-repudiation with enhanced user privacy, without sacrificing accountability.
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