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.
Plenum as the consensus protocol by default can easily be switched out from the hyperledger code