Sid

[Sid @Sid_Seditious]

@MrHodl @moneyball Fortunately @nvk, @DocHex and team fixed this for everyone with tapsigner because it allows, with quick NFC tap, to delegate the signing operation on mobile wallets to a dedicated SE that supports secp256k1.

[Sid @Sid_Seditious]

@MrHodl @moneyball Android is largely same. The vast majority of Android devices don’t have hardware TEEs that support secp256k1. So every implementation that was “using the mobile SE” was at best generating bitcoin keys in mem, encrypting it with key in SE, eventually decrypting back into mem.

[Sid @Sid_Seditious]

@joekelly100 @allenf32 @TTOVpodcast It’s also hard to imagine why the legal exposure of Chaumian mint operators would be any different than that of darkweb mixers, Monero exchanges, etc.

[Sid @Sid_Seditious]

There’s folks out here off the coast of Nassau, the spiritual home of self sovereign sailors, physically exchanging bitcoin off chain using @SATSCARD and @DoshBTC just like they would’ve done with pieces of eight back in the age of sail. 🏴‍☠️

[Sid @Sid_Seditious]

@theBTCalien @DoshBTC Yes, the address only changes when the holder of the card unseals it to extract the coins. When it’s unsealed the current key is unveiled, the bitcoin can be moved, and the card can be resealed where a new unknown key is generated by the card.

[Sid @Sid_Seditious]

Bitcoin can now physically change hands like cash or gold coins.

This SATSCARD has a key sealed inside it only the card knows. I sent ₿0.005 (~$200) to its address, and now I can hand the card over to you just like a 200 dollar bill. @DoshBTC app verifies it with a simple tap.

[Sid @Sid_Seditious]

@randomal974199 @nvk @DoshBTC On chain, it’s a Bech32 address.

[Sid @Sid_Seditious]

Our iOS app is in beta. If you own or intend to purchase a SATSCARD, send us a message and we will send you an invite.

[Sid @Sid_Seditious]

@rot13maxi @ercwl @mononautical @__mbak__ Yo. I built an app for cryptographically verifying the integrity of these satscards and then displaying the inscriptions sealed inside them. The app is named after a very special developer.