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.