🌴 June + July @ Coinkite
TAPSIGNER, BLOCKCLOCK Micro, SATSCHIPS Hardcase & Bitcoin.Review Podcast
🥵 Hot Bear Market
According to Glassnode, ‘exchange balances are draining at historically high levels,’
Where are all these withdraws going to? Probably in one of our calculators.
TAPSIGNER now up for grabs and fully compatible with Nunchuck mobile wallets
Listen to the playback of our TAPSIGNER ‘Ask Me Anything’ session
🕰️ BLOCKCLOCK Micro pre-sale discount ending soon!
👀 BLOCKCLOCK Mini spotted in the wild:
🧰 HARDCASE for COLDCARD
Custom protective foam
Unbranded to keep a low-key profile
4.5 x 3.25 x 1"
🎁 10% off Coinkite virtual gift via Bitrefill.com and the Fold app
🖼️ SATSCHIP pre-launch for artists
Bitcoiners don't buy JPEG that anyone can copy! They buy physical works of arts with unforgeable certificate of authentication —NVK
We leveraged the firmware from the SATSCARD and TAPSIGNER to bring an authenticating solution for artists and art collectors
Easily embed a flexible 1 inch square NFC chip directly into your physical work of art
The authenticity of the piece can be verified by anyone, but only the owner can sign a transaction
SATSCHIP Gallery is now live
🔩 New Tutorials
2 of 2 multisig with 2 x COLDCARD signing devices, and bitcoin-qt as coordinator
💾 Firmware upgrades
COLDCARD Mk4 5.0.5
BIP-85 derived passwords:
Pick an index number, and COLDCARD will derive a deterministic, strong (136 bit) password for you. It will even type the password by emulating a USB keyboard. See new areas: Settings > Keyboard EMU and Settings > Derive Seed B85 > Passwords.
Added docs/bip85-passwords.md documenting new BIP-85 passwords and keyboard emulation.
BIP-85 derived values can now be exported via NFC, in addition to QR code.
Allow signing transaction where foreign UTXO(s) are missing. Only applies to cases where partial signatures are being created. Thanks to @straylight-orbit
QR Codes are now easier to scan in bright light. Thanks to @russeree for this useful fix!
Support import of multisig wallet from descriptor (only sortedmulti, BIP-67). Also support export of multsig wallet as descriptor.
Address explorer can show "change" addresses for standard derivation paths for both single and multisig wallet.
OP_RETURNis now a known script and is displayed in ascii when possible
order of multisig wallet registration does NOT matter
allow unknown scripts in HSM mode, with warning
CK-Tap Protocol 1.0.5
"CK Tap" is our command line tool for SATSCARD and TAPSIGNER.
This project also contains the public documentation for the NFC protocol used by the cards, and provides a full python library for coders.
New best practices docs: https://dev.coinkite.cards/docs/best-practices.html
Add ability to derive non hardened derivations w/ library...
'sign_digest' accepts new 'fullpath' parameter where full bip 32
Added @SATSCHIP support
Shell output for backup cmd improved
Added 'card.product_name' string
CK-TAP React Native Open Library built by the Hexa wallet team claimed the bounty released
Added ability to derive non hardened derivations with library (not possible with card - card can only derive hardened path components)
‘sign_digest’ accepts new ‘fullpath’ parameter where full bip 32 string path can be passed
Support added for SATSCHIP v1.0.0 product
Shell output for backup command improved
Added card.product_name string
https://satschip.com/gallery and NFC reader + CLI program for artists to submit
🗞️ News for devs
Coding something amazing, aren’t you?
Leave us a comment about your latest software updates to receive a shout-out on the next 🎙️Bitcoin.Review podcast by NVK feat. ODELL
Getting SATSCARD into the hands of builders
To receive a sample, please email us firstname.lastname@example.org with a bit of information about who you are and what you plan on building with your new SATSCARD
Shout-out to Mike Kelly for launching a new SATSCARD demo for authenticating into a venue and keeping a bar tap as creditless collateral
✨ Meme Domains
🤝 Join our team
Mobile Engineer (iOS + Android)
Podcast and Video Producer (Part-time)
Web Designer + Coder
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I’m so excited for the SatsCard! I want to use it to leave physical Bitcoin tips at restaurants and barber shops and everywhere else I tip.