How Does ECDSA Prevent Transaction Repudiation in Blockchain?

Non-repudiation means a sender cannot falsely deny having sent a transaction. ECDSA achieves this because only the private key holder can create a valid signature for a specific transaction.

The verification process mathematically confirms that the signature corresponds to the public key and the transaction data. Since the private key is unique to the owner, a valid signature serves as irrefutable proof of authorization.

This is vital for trustless systems.

How Does the Elliptic Curve Digital Signature Algorithm (ECDSA) Relate to Public Key Security?
How Does a Distributed Ledger Benefit from Non-Repudiation?
What Is the Difference between Authentication and Non-Repudiation?
What Is the Relationship between a Public Key and a Private Key in ECDSA?
How Does a Collision in a Hash Function Affect ECDSA Security?
What Is Non-Repudiation in the Context of Digital Finance?
What Is the Role of a Digital Signature in a Bitcoin Transaction?
What Is the Mathematical Process Used to Derive a Public Key from a Private Key?

Glossar