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Christopher Allen

27 Jan, 10 tweets, 6 min read

https://twitter.com/ChristopherA/status/1267560481855639553

Bitcoin has quadrupled in value in the last year, which makes #SmartCustody more important than ever. Your holdings might now be worth more than you think. How secure are your digital assets? [1/10]

https://twitter.com/ChristopherA/status/1267560481855639553

You could choose to store your keys in hot wallets, which are directly connected to the internet, or in cold storage, which takes them offline. Each has its own advantages and limitations. [2/10]

The #SmartCustody process teaches you how to use cold storage safely and securely, so that you can protect your digital funds yourself. Though emerging tools are changing the landscape, this process remains today the best way to manage self-custody. [3/10] github.com/BlockchainComm…

Because you don’t want to be these guys: millionaires on paper who can’t access their digital funds. (Key Fragility, or accidental key loss, is a prime adversary in #SmartCustody.) [4/10] nytimes.com/2021/01/12/tec…

Using the #SmartCustody procedures we offer, you spend two hours to setup two Ledgers and a metal tile to preserve your master seeds no matter what. The procedure balances safety, security, and usability and improves on old non-redundant and insecure methods. [5/10]

If you want, you can also take the next step, using our risk modeling to reshape this basic procedure to best accomodate your assets and your suspected adversaries. [6/10]

You can download the book right now. It’s entirely free thanks to our early patrons. [7/10] bit.ly/SmartCustodyBo…

If you’d prefer a personal consultation, I can review your current custody setup and suggest revisions to enable #SmartCustody. Send me a message to set up an introductory conversation. [8/10]

@GordianWallet

There’s more for #SmartCustody in the future! Blockchain Commons is actively working on new methods like airgaps, torgaps, and multsigs, along with new hardware like @GordianWallet, @COLDCARDwallet, @CoboVault, @FOUNDATIONdvcs & #SpectreWallet. [9/10] github.com/BlockchainComm…

If you’d like to help Blockchain Commons to carefully review & add these mulitsig and other methods to v2 of #SmartCustody, consider making a one-time donation of Bitcoin at our BTCPay (…tcustody.btcpay.blockchaincommons.com) or becoming a GitHub patron (github.com/sponsors/Block…). [10/10]

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More from @ChristopherA

Christopher Allen

@ChristopherA

21 Sep 20

Twenty years ago today I launched Castle Marrach to the public, my first multiplayer online game design. Unique in offering a #Bartle “socializer-dominant” interactive fiction experience, and a hybrid text & web interactive environment, it was novel for its time. [1/15]

I had founded Skotos in 1999 with a goal of creating "multiplayer interactive fiction on the Internet". We wanted to make games that were more social, more dynamic, more interactive, more “real”, and in particular more story-focused than anything that had been seen before. [2/15]

I also become interested in experimenting with cross-media, and produced two comic books based on our games, Castle Marrach: Awakenings awakenings.marrach.com and Lovecraft Country: Return to Arkham lovecraftcountry.com. [3/15]

Read 15 tweets

Christopher Allen

@ChristopherA

6 Jul 20

#SmartCustody Adversary — Convenience

Our first adversay in category “Loss by Mistakes" is CONVENIENCE. It sounds, well, convenient, doesn't it? But it is a real adversary because focusing on it instead of safety or security can cause you to lose your digital assets. (1/8)

CONVENIENCE is an error that arises from your decision to ignore your normal security procedures. Yet that decision might be for entirely good and pragmatic reasons. (2/8)

If you're on the road, cold storage might not be accessible, or it might be vulnerable to theft. If you're frequently trading, you might need access to your cryptocurrency in a easy and quick manner. CONVENIENCE is important, but can be also dangerous. (3/8)

Read 8 tweets

Christopher Allen

@ChristopherA

5 Jun 20

#SmartCustody Adversary — Disaster

DISASTER! Its motivation? "I want to destroy. I want to crumble and burn. I want to ruin with water, to blow things into the air. I am bombs, bullets, and explosions. I am sudden and unexpected but disastrous destruction." (1/9)

This is the third adversary in my #SmartCustody book about protecting your cryptocurrency and other digital assets. And the motivations certainly explain the ways that you could lose your private keys. A house fire, a flood, a tornado, a war. (2/9)

When researching for my book, I heard the story of someone who religiously printed his keys to paper wallets. Every quarter he'd reprint so the ink didn't fade (and would then shred the previous one). Unfortunately, he kept those keys in the basement. Which flooded. (3/9)

Read 9 tweets

Christopher Allen

@ChristopherA

1 Jun 20

@BlockchainComns

#SmartCustody is an ongoing project of @BlockchainComns, a blockchain infrastructure support organization. In it we share the best practices for the use of advanced cryptographic tools in improving the care, maintenance, control, and protection of your digital assets. (1/14)

In the 1st edition of #SmartCustody we detail best practices & default storage scenarios, offer an exercise for you to learn how to model digital asset flows, create a risk model, do an adversarial analysis, and use these tools to modify your personal storage scenario. (2/14)

These resources, paid for by your fellow patrons in the Bitcoin and cryptocurrency digital-asset community, are available for free in the PDF bit.ly/SmartCustodyBo… and at cost in a print-on-demand book bit.ly/SmartCustodyBo… (3/14)

Read 49 tweets

Christopher Allen

@ChristopherA

21 May 20

@BlockchainComns

Last night @BlockchainComns tagged our first release of bc-seedtool-cli, a Mac & Linux command line tool for for some emerging standards for cryptographic seeds. github.com/BlockchainComm…

We believe this to be a stable and useful release. However, we have not done any formal security auditing — this release is intended for additional review by third-parties before requesting formal auditing.

Seedtool itself is is written in C++, but it uses a number of pure C libraries that we also have tagged as release 0.1. In particular, the bc-shamir, bc-slip39, and bc-bech32 libraries have functionality of broader interest to blockchain community for securing digital assets.

Read 11 tweets

Christopher Allen

@ChristopherA

14 Apr 20

@JoeAndrieu

New collaborative white paper from #RebootingWebOfTrust on the topic “Five Mental Models of Identity”. Team led by @JoeAndrieu w/ Nathan George, @IDIMAndrew, @cmacintosh & Antoine Rondelet github.com/WebOfTrustInfo…

…”consider multiple mental models for better communication and better identity systems. Whatever your own goals, we believe you are more likely to achieve them if you can communicate clearly in terms others understand and can incorporate the needs of others into your own work.”

…”The question we are seeking to answer in this paper is the following: ‘When we are evaluating the evidence, what are we trying to determine?’. Each mental model approaches this differently.”

Read 11 tweets

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