Ecash for Other Stuff by Max Hillebrand. (Short)
bitcoin++
Hillebrand traces ecash from Chaum's warehouse receipts (deposit assets, receive electronic signature tokens) to Fedimint. The system enables anonymous, instant token transfer—designed for and still used for fast, cheap digital payments. Over 40 years, the cryptographic foundation persists: ownership proof without custodial intermediaries.

https://relay.towardsliberty.com/379d4c4e8c76d4199d246f5a09f6f22ec87e78fedd74cf56913b771a32a3d3b6.mp4