Oddbean new post about | logout
▲ ▼
Laeserin | 3 months ago (raw) | root | parent | reply | flag 
 We already have paper wallets, actually. That used to be really popular.
▲ ▼
Laeserin | 3 months ago (raw) | root | parent | reply | flag 
 And you can print Lightning eCash on paper.
▲ ▼
Gojiberra | 3 months ago (raw) | root | parent | reply | flag +1 
 ok, i will look into eCash. 

i think what i'm looking for is just dollar bills/local currency for now. but fast forward 10 years, and it will be interesting to see how it's done because I really don't want to carry around a phone in the future.
▲ ▼
ajrlewis | 3 months ago (raw) | root | parent | reply | flag 
 Yeh ... physical bitcoin cash notes would be handy
▲ ▼
Gojiberra | 3 months ago (raw) | root | parent | reply | flag 
 yeah, how would they look... would they have some little RFID circuits printed under the surface to match it with database at the bank that issued them. authenticity could be verified with a phone NFC(API to regulated portal that checks serial number against banks issued paper and BTC holdings) . ownership is just whose hand is holding it.
▲ ▼
Gojiberra | 3 months ago (raw) | root | parent | reply | flag 
 I wonder if it's possible to cryptographically give a serial number to one piece of paper that couldn't be counterfeited
▲ ▼
ajrlewis | 2 months ago (raw) | root | parent | reply | flag +1 
 Maybe for fedimint  ... could mint cash notes that you can scan to see if they're duplicated (i.e. counterfeit) ... interesting problem!