Attributes have one or more attestations attached to prove authenticity, Digitally Signed by the individual or relevant third parties. (It’s one thing for you to say you have a degree; it’s quite another when the university says so.)
Self-Sovereign#Sovereign is defined as "One that exercises supreme authority within a limited sphere." If an identity can be revoked, or the rules changed, by anyone other than its owner, it isn’t sovereign. Your control over your Sovrin identity cannot be revoked, not even by Evernym. The Sovrin platform itself is also sovereign, as it is controlled by consent of its independently owned and operated nodes and not by Evernym or anyone or anything else.
Advanced#To keep nodes synchronized, Sovrin utilizes Plenum, an advanced Distributed Consensus algorithm developed by Evernym. Plenum achieves Byzantine fault tolerance, making Sovrin robust and highly tamper-resistant. Plenum also leverages advanced Elliptic Curve cryptography, Digitally signing and encrypting every message, end-to-end, and is more secure than current SSL/TLS protocols.
Plenum can handle thousands of transactions per second with a latency of a few seconds, compared to about 7 transactions per second with a 10-minute latency for proof-of-work protocols. Plenum has a friction-less Open Source license, and you can see the codebase here.
Dedicated#Some platforms are designed to be flexible, to support almost any application. Not Sovrin. Sovrin is dedicated to and engineered for a single purpose: globally trustable Self-Sovereign Identity. Sovrin gives other software, websites, blockchains, and distributed ledgers a powerful new source for identity: a universal, private, non-tracked, easy-to-use, Self-Sovereign Identity ledger that supports the entire continuum of the identity graph, from anonymity to pseudonymity to strongly proven full legal identity. privacy, yet impose terms of service that let them harvest, analyze, and sell your data. With Sovrin there are no terms and conditions for you to agree to, because you’re not a "user" in the traditional sense; your identity is truly self-sovereign, and no entity in the world can read your data—even your name—without your explicit consent.
Sovrin’s sophisticated Privacy Enhancing Technologies (PETs) make it nearly impossible for aspects of you and your identity graph to be correlated. Beyond simple Privacy Concerns, it satisfies tough regulatory requirements, protects you from identity theft, and can mean the difference between life and death for refugees or dissidents targeted by an unfriendly regime.
Public Permissioned#The "nodes" of any distributed ledger are gatekeepers of its data; they follow strict protocols to reach consent about which submitted data gets in, and which does not. Unlike Sovrin, "permissionless" blockchains (like Bitcoin) typically use "proof of work" to reach consent among the nodes, where anyone with a computer can serve as a node by performing the required work (solving a complex cryptographic puzzle before anyone else). These anonymous systems can have groundbreaking advantages for some applications, such as cryptocurrency.
In contrast, Sovrin utilizes a public Permissioned System distributed ledger—not a blockchain—that provides public access for identity owners while permitting only known, trusted, vetted entities to serve as nodes. This provides the greater transparency — and higher comfort level — some applications and industries require, while still not relying on any intermediary or central authority. For a thorough, authoritative discussion of this topic, see Tim Swanson’s seminal work.Trust Framework is the legal foundation of the Sovrin Network as a global public utility for Self-Sovereign Identity. It is developed by the Sovrin Trust Framework Working Group, currently chaired by Sovrin trustee Drummond Reed, and each new version is approved by the Sovrin Foundation Board of Trustees to become the official set of governance documents for the operation of the Sovrin ledger.