The current Monero protocol uses linkable ring signatures to prove coin ownership in a way that doesn't leak the specific coin. But other designs do things differently! In this talk, we'll look at different approaches to proving ownership in digital asset protocols: Monero (today and tomorrow!), Firo, and Zcash. Each offers a unique and interesting look at how we can use different cryptographic techniques toward the same goal.

An important but overlooked use case for digital asset mnemonic seeds is risky situations like border crossings, where inspection or seizure of property could make possession of a written mnemonic dangerous. How can these situations be handled safely? In this talk, we'll look at existing approaches with a critical eye and identify important concerns.
We'll propose a controversial alternative that uses off-the-shelf cryptographic components in a new way.