COLDCARD™

@COLDCARDwallet

From , makers of . : Ultra-secure & OpenSource Hardware Wallet for . The only dedicated air-gapped solution.

Vrijeme pridruživanja: prosinac 2017.

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  1. Prikvačeni tweet
    19. pro 2019.

    Firmware Update 3.0.6 (Security Fix: multisig users must upgrade 📣) Also: -Sign txt f/ MicroSD -Shows change outputs of txns at signing -PSBT files on MicroSD can now be in base64 or hex -Bugfix: Address Explorer & more

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  2. proslijedio/la je Tweet

    Not gonna lie, these opendimes by look crazy cool. I can’t wait to gift my first victim some bitcoin using these. Honestly the coolest way to get nocoiners into bitcoin.

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  3. proslijedio/la je Tweet
    prije 14 sati

    There is only safety in sats, if your sats are safe!

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  4. prije 13 sati
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  5. prije 14 sati

    There is only safety in sats, if your sats are safe!

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  6. proslijedio/la je Tweet
    prije 14 sati
    Odgovor korisnicima i sljedećem broju korisnika:

    Thats offensive bro 😛 safety = coldcard

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  7. proslijedio/la je Tweet
    Odgovor korisniku/ci

    I got my 2yo a coldcard for his birth day. He doesn’t know we’re stacking together weekly n that his financial future will be guaranteed many times over. The first thing he will learn is a simple, low time pref life and many skills and languages that’ll lead to quiet confidence.

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  8. proslijedio/la je Tweet
    Odgovor korisnicima

    Which wallet is? A or a ?

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  9. proslijedio/la je Tweet
    3. velj
    Odgovor korisniku/ci

    But if you want more robustness, go for MK3!

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  10. proslijedio/la je Tweet
    2. velj

    Learn How To Use ✅2 of 3 Airgapped Multi-Sig With 1 Coldcard ✅2 of 2 Multi-Sig w/ Coldcard + Trezor ✅Airgapped Transactions w/ ✅Address Explorer 💰Use Promo code KIS for discount💰

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  11. proslijedio/la je Tweet

    What is it about signing transactions air-gapped with that is just so damn satisfying?

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  12. proslijedio/la je Tweet
    2. velj
    Odgovor korisnicima i sljedećem broju korisnika:

    Coldcard & Opendime for Liberty! # Bitcoin

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  13. proslijedio/la je Tweet
    2. velj

    You can read a more in-depth overview of Proof Wallet on Github: For now it is in the early stages of development, and should NOT be used to handle mainnet bitcoins. I welcome anyone that wants to help me make it production-ready.

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  14. proslijedio/la je Tweet
    2. velj

    I've been working on a python wallet that aims to improve the experience of using Bitcoin Core for PSBT enabled multisignature cold storage. This thread provides an overview of "Proof Wallet" and a video walk-through so you can see it in action for yourself.

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  15. proslijedio/la je Tweet
    2. velj

    The advent of PSBT represents a great opportunity for advancing Bitcoin security by allowing Bitcoiners to use different wallets that all share a common Tx standard. To date, however, only has implemented PSBT natively.

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  16. proslijedio/la je Tweet
    1. velj

    We’ll have some give aways, courtesy of 💪 ☣️ Have yet to find a way for distribution to be fair with some kind of proof of work... ideas?

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  17. proslijedio/la je Tweet
    1. velj

    24 hrs later I'm feeling more comfortable with the . Here's what helped me understand the most: Step by step: Electrum/cc plug-in: Private key basics: Q&A: and

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  18. proslijedio/la je Tweet
    30. sij

    Further progress on the HSM mode with the CK-Bunker package/server. BTC policies like velocity, users, time period, leve of lockdown, co-sign, paths, onion, etc... Closer to writing some docs and making a beta release 😍

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  19. proslijedio/la je Tweet
    31. sij

    Just a quick note, in case you were wondering. is NOT AFFECTED by this attack because master secret stored external to STM32 main micro, in flash of 608A secure element Also MCU is a different family model w/ internal voltage reg.

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  20. proslijedio/la je Tweet
    1. velj
    Odgovor korisnicima

    The SE is fixed function, in metal. Your MCU is not as “open” as you think. I recommend you check out our documentation. Quick note, we also encrypt the seed stored in the SE, so you are not depending on the chip maker.

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  21. proslijedio/la je Tweet
    31. sij

    Agreed. I'm still in the learning phase atm and am scared to send my coins to my but I HAD to take control of my . I'm not averse to risk however, when it comes to finances why jeopardize your wealth? I'll take security over ease of use any day.

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