Christopher Allen

@ChristopherA

Blockchain & Decentralized Identity Architect—Internet Cryptography Pioneer—Co-author TLS Security Standard—Collaborative Tools & Patterns

Berkeley, CA
Vrijeme pridruživanja: siječanj 2007.

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  1. Prikvačeni tweet
    25. tra 2016.

    My long read article "The Path to Self-Sovereign Identity" shares a vision and a draft of some principles. Comments?

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  2. proslijedio/la je Tweet
    prije 18 sati

    . stresses "firstly you should know who you are designing for..." when he answers the question 'what is needed to make self sovereign identity work'

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  3. proslijedio/la je Tweet
    4. velj

    "What is a Digital Credential? Document versus Envelope"

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    'Maybe it’s time for us to reevaluate what it means to be “dated”—as less of a criticism and more of an accolade.' How Science Fiction Imagined the 2020s by in

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  5. proslijedio/la je Tweet
    2. velj

    How will European citizens gain back their data-sovereignty and avoid cyber-colonization? Probably by creating their own framework!

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  6. proslijedio/la je Tweet
    3. velj

    "The ruling “partially recognized” how essential biometric data is “to who you are as a human being, and that the government shouldn’t have unchecked power to collect that information and to use it without your consent,” "

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  7. proslijedio/la je Tweet
    3. velj

    Digital Credentials Consortium white paper is available

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  8. 2. velj

    Pointed out to me today by a colleague and it resonated — the word “En’owkin”. It comes from the Okanagan tribe in British Columbia. One translation means “Please give me the viewpoint most opposite of mine so I can increase my wisdom”. More details:

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  9. proslijedio/la je Tweet
    2. velj

    Code should not be law because the law should always have a human face.

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  10. 2. velj

    There are also risks of limits on choice & vertical integration in the tech industry that supports decentralization of finance, identity & personal data.

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  11. proslijedio/la je Tweet
    1. velj

    Hey ₿ Twitter! I'm looking for a job in the Bitcoin world. I have experience with Bitcoin/Lightning/Liquid, (hardware) wallets, low level libraries, weird scripting. Previously at Blockstream where i was working mostly on the Green wallet. DMs are open 📭 RTs appreciated 🙏🏻

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  12. 1. velj

    When traveling on business, on weekends some people will relax by going to parks, museums, etc. but I also like finding game cafes to meet locals and have conversations over board and card games. Tonight I’m at “The Boardroom” in Haarlem, near Amsterdam.

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  13. 31. sij

    If you are going to use BIP38 passphrase, include it on your titanium cold key along with your recovery words. Pre-test with small transactions, and triple check each use — unlike the first 12 or 24 words there is no validity check for errors in mistyping the 13th or 25th word.

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  14. 31. sij

    The loss of a password in an encrypted Recovery Phrase is one of THE most common reasons for bitcoin loss. In this procedure the Recovery Phrase is unencrypted in the most secure location and is thus available as last resort.”

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  15. 31. sij

    “[^10]:Though not supported by Ledger Live today, some other wallet software allows the encryption of the Recovery Phrase with an additional password using BIP38. We recommend in this base scenario AGAINST encrypting the Recovery Phrase. …

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  16. 31. sij

    …In the current market, however, we believe that the Ledger device is the best for this scenario. You may substitute a Trezor for this scenario as the tradeoffs are somewhat subjective.”

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  17. 31. sij

    …If another hardware wallet were to appear with an open cryptographic private-key store and open-source code, we would recommend that instead.…

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  18. 31. sij

    …There are disadvantages to the Ledger as well: its cryptographic chip is proprietary, thus unlike the Trezor all of its code isn't open source. Thus, our understanding of its security is ultimately somewhat limited.…

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  19. 31. sij

    …We ultimately selected the Ledger because it stores its private keys on a cryptographic chip. Since we advocate keeping a hardware wallet in a less-secure home safe, this was a requirement, as it offsets the adversary of Casual Physical Theft. …

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  20. 31. sij

    From Chapter 2: Cold Storage Self Custody Scenario “[^3]:We were forced to make a decision between two major hardware wallets: the Ledger and the Trezor. Both are good, mature solutions with well-reviewed code and solid ecosystems.…

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  21. 31. sij

    Our research shows significant losses by Bitcoin holders loosing or making a mistake using a BIP38 passphrase. You are just moving the problem of storing the secret, not fixing it, and there is no error detection when mistyping a BIP38 word. Free book at:

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