#SmartCustody

“The use of advanced cryptographic tools to improve the care, maintenance, control, and protection of digital assets.”

Our goals:

  1. Raise the bar on best practices for digital-asset custodianship by building a greater understanding of different custody use cases, risk models, and adversary analyses.
  2. Prepare for newer custody technologies that break older models for custodianship.

#SmartCustody supports our shared blockchain infrastructure, improving the security of cryptocurrencies, identity wallets, and other digital assets. The first edition of our book on the topic is now out, covering randomness, risk modeling, and fiduciary duties in 186 pages. We also present a cold-storage self-custody scenario. Thanks to our early patrons, this first edition is free: you can download a PDF or you can get a hardcopy from Lulu at cost.

We are also preparing to work on the second edition of the book, which will dramatically expand the content and include new hardware wallets, a multisignature scenario, and information on fidicuary multisigs. You can help us realize this new edition by becoming a sponsor, either as a recurring patron at GitHub or by supporting #SmartCustody with Bitcoins through our BTCPay.

#SmartCustody is a project of Blockchain Commons, which supports blockchain infrastructure, internet security & cryptographic research.

Recent Blog Posts

Most Recent Post

June TweetStorms on #SmartCustody Adversaries, 1-on-1 Advice, Supporting Smart Custody Book v2

On June 3, 2020, Christopher Allen sent out a letter announcing a month of #SmartCustody posts on adversaries and talking about Blockchain Commons’ plans for v2 of the book.

Here is an archived copy:


Thank you for your past interest in my #SmartCustody project. If you attended one of my meetups, or participated in one of my workshops, or read my book, I hope it helped you to improve the security of your digital assets. The whole point of this project is to help the cryptocurrency community to identify which dangers are the most likely to impact you and your digital assets.

If you haven’t read our book, then the good news is that it is still freely available thanks to the generosity of the Patrons and backers of v1.0. You can read it as a free PDF or you can buy an at-cost print edition from Lulu for $13.50.

One of the most unique elements of our #SmartCustody approach is Adversarial Analysis. It’s a new methodology meant to make risk-modeling less overwhelming and more approachable. Our adversaries are anthropomorphized dangers, which helps us to better understand their motivations. With those motivations in hand, we can then make assessments less emotionally. Though some things might scare us when we consider them from afar, when we look at them more closely, we can determine whether they actually are threats or not, and how much attention we should give them.

This month I’m offering a daily series of Tweetstorms talking about all of the adversaries we describe in the book. Please join me and offer your own stories and experiences (and tell us what we’re missing): https://twitter.com/Christophera starting at https://twitter.com/ChristopherA/status/1267560481855639553.

(read more)

Future Releases & Mailing List

Keep apprised of our work on #SmartCustody, the next edition of the book, and other releases of best-practices and other educational documents through our email newsletter:

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