Over the last few years, Blockchain Commons
<https://www.BlockchainCommons.com/> has been working with our Airgapped
Wallet Community
<https://github.com/BlockchainCommons/Airgapped-Wallet-Community> to
produce interoperability specifications to improve Bitcoin wallet usage —
and in the future, other cryptocurrency applications, such as Ethereum
wallets, and other cryptography aps, such as chat systems, key-management
programs, and more. Our goal is to improve the independence, security, and
resilience of cryptographic systems.

We recently put together an introductory video to talk about our
initiatives:

* https://www.youtube.com/watch?v=RYgOFSdUqWY

We've been working on encoding methods, improved sharding methods, better
user interfaces, partitioned architectures, multisig patterns and more.
It's all in there!

We've also begun work on new documentation for developers, to help
introduce some of our specifications. That begins with a look at Uniform
References, our typed method for encoding binary data in plain-text strings
that are also well-formed URIs suitable for QR.

* UR Overview —
https://github.com/BlockchainCommons/crypto-commons/blob/master/Docs/ur-1-overview.md
* A Guide to Using UR for Key Material —
https://github.com/BlockchainCommons/crypto-commons/blob/master/Docs/ur-2-keys.md

(We've got a few more docs coming soon on using URs interactively and for
animated PSBTs and shamir seed shares.)

If anyone is interested in talking about these specifications and other
technologies more, I'm always enthusiastic to do so, here or in the Airgapped
Wallet Community Discussions
<https://github.com/BlockchainCommons/Airgapped-Wallet-Community/discussions>.
I'm also enthusiastic to get more developers on board in using these
technologies, joining folks like Fully Noded, AirGap Vault, BlueWallet,
Cobo Wallet, and Sparrow Wallet — interoperability takes a community!

For further details, I've included a set of links for the topics covered in
the video.

Christopher Allen
President, Blockchain Commons

COMMUNITY LINKS

* Blockchain Commons Website — https://www.blockchaincommons.com/
* Blockchain Commons Repos — https://github.com/BlockchainCommons
* Airgapped Wallet Community —
https://github.com/BlockchainCommons/Airgapped-Wallet-Community

BLOCKCHAIN COMMONS TECHNOLOGIES

* ByteWords —
https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2020-012-bytewords.md
* LifeHash — https://github.com/BlockchainCommons/bc-lifehash
* SSKR —
https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2020-011-sskr.md
* Uniform Resources (URs) —
https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2020-005-ur.md
   * Registry of UR Types —
https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2020-006-urtypes.md

RELATED LIBRARIES

* ByteWords —
https://github.com/BlockchainCommons/crypto-commons#bc-bytewords
* LifeHash — https://github.com/BlockchainCommons/crypto-commons#lifehash
* SSKR — https://github.com/BlockchainCommons/crypto-commons#bc-sskr
* UR — https://github.com/BlockchainCommons/crypto-commons#bc-ur

SECURITY ARCHITECTURES & METHODS

* #SmartCustody — https://www.smartcustody.com/
* TorGap — https://github.com/BlockchainCommons/torgap
* Designing Multisigs for Independence & Resilience -
https://github.com/BlockchainCommons/Gordian/blob/master/Docs/Multisig.md

EDUCATION
* Learning Bitcoin from the Command Line 2.0 -
https://github.com/BlockchainCommons/Learning-Bitcoin-from-the-Command-Line

APPLICATIONS MENTIONED

* Gordian Guardian —
https://github.com/BlockchainCommons/GordianGuardian-iOS
* Gordian Server — https://github.com/BlockchainCommons/GordianServer-macOS
* Gordian Wallet — https://github.com/BlockchainCommons/GordianWallet-iOS
* Keytool — https://github.com/BlockchainCommons/keytool-cli
* LetheKit — https://github.com/BlockchainCommons/lethekit
* Seedtool — https://github.com/BlockchainCommons/seedtool-cli