Avatar
Bitcoin.Review 1y ago

#COLDCARD just got a firmware upgrade!

✅XOR from Seed Vault

✅Seed scanning from SeedQR

✅Unsorted multisig

✅Airgapped multisig coordinator with BBQr

✅Share any file from SD card via QR/BBQr

✅Optimizations and speed

✅libsecp256k1 bumped to latest 0.5.0

✅Improvements in signature grinding algo

✅Improved side-channel protection

nostr:npub1az9xj85cmxv8e9j9y80lvqp97crsqdu2fpu3srwthd99qfu9qsgstam8y8 of nostr:npub1wu4aye7ll0lnrrg638e90sehzsgpzx5t39t3mwl05aa0d0ap08esdz3vw0 talks through the latest release in BR075.

https://m.primal.net/KoBo.mov

Reply to this note

Please Login to reply.

Discussion

Avatar
morningglow 1y ago

Is it the same update for the mk4 as the Q? Will the list above work for the mk4?

Avatar
DETERMINISTIC OPTIMISM 🌞 1y ago

Both were upgraded.

45
Davide 1y ago

Talking about the CC, what hardware wallet of another vendor can be used to check the deterministic signature for the transactions?

About Trezor I found this: https://forum.trezor.io/t/deterministic-signature-issues/18976

I don't trust Ledger.

Jade and Bitbox have their own anti-klepto and are not using RFC 6979.

You often say that generic computers should not be trusted.

So what else can be done for a single-sig?

Avatar
DETERMINISTIC OPTIMISM 🌞 1y ago

RFC6979+repro builds and secure boots are adequate. But, if you want to double check just get a second COLDCARD and check the sigs match.