firmware
❄️ Firmware and simulator for Coldcard Hardware Wallet (by Coldcard)
seedsigner
Use an air-gapped Raspberry Pi Zero to sign for Bitcoin transactions! (and do other cool stuff) (by SeedSigner)
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| firmware | seedsigner | |
|---|---|---|
| 260 | 36 | |
| 521 | 633 | |
| 3.8% | - | |
| 9.0 | 9.1 | |
| 5 days ago | 12 days ago | |
| C | Python | |
| GNU General Public License v3.0 or later | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
firmware
Posts with mentions or reviews of firmware.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-08-23.
- Github repo
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I can't find some components in this schematic.
TIP: Use the BoM as well as the schematic.
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Coldcard post anti-forensics for paranoid people
As you can see, the default firmware of Coldcard is hardcoded with values d13e and cc10. We are going to change it to make it look like a benign USB device, more on it later. First, clone the original firmware from Github: https://github.com/Coldcard/firmware We now need to edit the file called ./stm32/COLDCARD/shared/usb.py: COINKITE_VID = 0xd13e CKCC_PID = 0xcc10
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Hardware/Software wallets and backdoors implemented by different nations?
Software altered? You were supposed to download from source and flash it yourself. So why did you alter it? No one other than you could have altered it! https://github.com/Coldcard/firmware
- Multisig 2 of 3 for a single person, with all cold wallets as Tails + Electrum? Is it a good idea for safer security? Or just an unnecessary overkill?
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Hardware wallet security
Coldcard
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5 year old tails safe?
Consider holding long term with a solution like this. Have you ever use a hardware wallet like a coldcard
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Is it safe to buy bitcoin on a fidelity account?
Coldcard has many other security features as well. You can find more about them online. Probably the safest hard & cold wallet on the market right now. But most people don't buy it because of their $400 price tag. But definitely worth it for anyone holding more than a pretty penny.
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Safety
You can check it
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Daily reminder to move your crypto off exchanges
it’s a cold wallet that only holds BTC
seedsigner
Posts with mentions or reviews of seedsigner.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-12-07.
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Creating a custom Bip39 brain wallet
I am talking about using diceware or Seedsigner's implementation which can even be verified independently.
- How are Cold Wallets made?
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Setups for cold wallet
Look into Seedsigner. It's awesome.
- QR code help
- Seed Signer
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Ledger devices CAN send your seed phrase over the internet, confirmed by Ledger co-founder
The link didn't seem great, Seedsigner uses a Pi Zero, I have no experience with it but it looks interesting especially for the for the somewhat paranoid.
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Introducing Ledger Recover & Answering Your Questions
Seedsigner (BIP85): https://seedsigner.com/ Release 0.6.0 = https://github.com/SeedSigner/seedsigner/releases/
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Came to crypto because of altcoins, here to stay because of Bitcoin.
Coldcard is a solid, bitcoin only commercial option. If you don't mind a little DIY then Krux or seedsigner might be a good choice too. You can also make your own with an old laptop. Remove the WiFi functionality (rip out the board or antenna) and upload Linux. Install a wallet on there like electrum or sparrow (transfer it over via usb) and you have an airgapped wallet.
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Anyone have insight comparing SeedSigner vs Jade?
For Seedsigner it's capable of deriving P2SH and P2WPKH adresses. But there's a github issue open, that could bring your requested feature. Let's see...
- How do I get my bitcoin off from the internet?
What are some alternatives?
When comparing firmware and seedsigner you can also consider the following projects:
trezor-firmware - :lock: Trezor Firmware Monorepo
specter-desktop - A desktop GUI for Bitcoin Core optimised to work with hardware wallets
bisq - A decentralized bitcoin exchange network
krux - Open-source signing device firmware for Bitcoin
bitbox02-firmware - Firmware code of the BitBox02 hardware wallet
specter-diy - DIY airgapped hardware wallet that uses QR codes for communication with the host
BlueWallet - Bitcoin wallet for iOS & Android. Built with React Native
trezor-hardware - :wrench: Hardware design of Trezor
umbrel - A beautiful home server OS for self-hosting with an app store. Buy a pre-built Umbrel Home with umbrelOS, or install on a Raspberry Pi 4, Pi 5, any Ubuntu/Debian system, or a VPS.
TXQR-Android - Based off of the principles in https://github.com/divan/txqr
galoy - bitcoin banking infrastructure
embit - A minimal bitcoin library for MicroPython and Python3 with a focus on embedded systems