Temporal Signature in the Blockchain

A.W. Roscoe
Chieftin Lab
University College Oxford Blockchain Research Centre

Every blockchain requires a form of cryptographic hash to maintain its basic integrity, linking blocks as well as contributing to cryptographic signature. A secure and long lasting blockchain provides asecure and linear notion of timestamping. In this paper we explain how the latter can be used in constructing novel hash-based signatures and investigate whether such signatures can be used to maintain the structure of the blockchain.