Chaumian cash on bitcoin? Fedimint? Cashu? What's the deal?

For the first hour (-ish), Adam will give a presentation reviewing some background on: * History of Chaumian-style ecash * Different designs and tradeoffs; blind signatures; anonymized tokens * Some info about Fedimint * Some info about Cashu This will include some technical background, for example basic cryptographic building blocks like blind signatures, DH key exchange, threshold signing, and potential attacks/weaknesses. We may briefly experiment with sending and receiving coins (let's see).…