September 13, 2018

Rabin Signatures in Bitcoin Cash


In this article we show how arbitrary messages can be signed and verified directly in Bitcoin Cash script without introducing new opcodes (such as the proposed OP_CHECKDATASIG (also known as OP_DATASIGVERIFY)). By utilising the simple algebraic structure of Rabin signatures, any piece of data placed in a transaction can be signed – even if it originates from outside the Bitcoin Cash blockchain.

Click here to read the full article.