ℹ️ The Chaumian eCash protocol for Bitcoin refers to a privacy-enhancing method of issuing and transacting digital money, inspired by the original eCash system developed by David Chaum in the 1980s.

Let’s break it down 🧵 🧠 𝐖𝐡𝐚𝐭 𝐢𝐬 𝐂𝐡𝐚𝐮𝐦𝐢𝐚𝐧 𝐞𝐂𝐚𝐬𝐡?

David Chaum’s original eCash system introduced the idea of blind signatures, which allow a bank to sign a digital coin without seeing its contents—providing privacy for users.

ℹ️ Can NFC smartcard helps 𝐂𝐚𝐬𝐡𝐮 in any way?

Especially for usability and real-world adoption, smartcards can absolutely enhance it. Let’s break it down 🧵 🪙 𝐇𝐨𝐰 𝐂𝐚𝐬𝐡𝐮 𝐰𝐨𝐫𝐤𝐬 (𝐪𝐮𝐢𝐜𝐤 𝐫𝐞𝐜𝐚𝐩):

It's a Chaumian eCash protocol layered on Bitcoin.

- You hold digital tokens signed by a mint.
- You can spend, receive, or redeem these tokens via an app or wallet (eg: )macadamia.cash