The following opinion piece on Segregated Witness was written by Jonald Fyookball
In 2017, Dr. Peter Rizun noted that Segregated Witness (Segwit) changes the very definition of a Bitcoin as per the whitepaper: “We define an electronic coin as a chain of digital signatures.” In this article, I would like to expand on that topic and add a key observation: breaking the chain of digital signatures is actually removing an integrity check in the Bitcoin ledger. Bitcoin is a distributed ledger system — a form of database. When it comes to databases in general, there are many different kinds of data integrity. One type, user-defined integrity, refers to a set of rules for a specific application (in this case, Bitcoin).