What Is Non-Repudiation in the Context of Digital Finance?

Non-repudiation is the assurance that a party to a contract or transaction cannot later deny having made it. In digital finance, especially on a blockchain, it is enforced by the digital signature.

Since a transaction is signed with a unique private key, the sender cannot credibly deny authorizing the transfer. This is crucial for establishing trust and finality in decentralized exchanges and financial derivatives platforms.

What Is the Difference between Authentication and Non-Repudiation?
What Is the Difference between a Signature Algorithm and a Hashing Algorithm?
How Do Different Blockchain Consensus Mechanisms (E.g. Proof-of-Stake Vs. Proof-of-Work) Impact the Level of Non-Repudiation?
What Is a “Chinese Wall” in Financial Regulation and How Is It Enforced in a Digital Context?
How Is ECDSA Used to Verify the Authenticity of a Derivatives Trade?
What Is a Digital Signature in the Context of a Crypto Transaction?
What Is a “Signed Message” in the Context of Block Validation?
How Does a Cryptographic Signature Prevent Repudiation?

Glossar