Coldcard/firmware
❄️ Firmware and simulator for Coldcard Hardware Wallet
Build with Backblaze B2
SDKs, agent skills, IDE extensions, and reference pipelines from Backblaze Labs. All open source.
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Where it stands
Rank, growth pace and release cadence relative to everything GStars tracks.
The project lists 56 contributors on GitHub.
Use Cases & Benefits
- Provides firmware and a simulator for the Coldcard Bitcoin hardware wallet to enable secure cryptocurrency management.
- Ensures ultra-secure, verifiable, and reproducible firmware builds for trusted Bitcoin hardware wallet operation.
- Use for developing and testing Bitcoin wallet firmware in a simulated environment before deploying to hardware.
- Use for rebuilding and verifying Coldcard firmware binaries to confirm integrity and security of device software.
- Use for maintaining and updating secure firmware on Coldcard devices to protect Bitcoin private keys and transactions.
Should you depend on it?
License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.
License
Other
GitHub could not identify this license; read the LICENSE file before depending on it.
Community files
- README: present
- Contributing guide: present
Watch-outs
- License not identified by GitHub; read the LICENSE file before depending on it.
- No GitHub releases; pin a commit or tag instead of a release.
General guidance from repository metadata, not legal advice. How we score
From the README
Coldcard is an Affordable, Ultra-secure & Verifiable Hardware Wallet for Bitcoin. Get yours at Coldcard.com
Follow @COLDCARDwallet on Twitter to keep up with the latest updates and security alerts.
Daily snapshots
Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots
+29 stars over 84 days across 9 snapshot days; best day +4 on Aug 5.
Forks
231+25
Open issues
10-3
Compared with peers in Blockchain
Fastest-growing repositories GStars tracks in this cohort for the week of Nov 1, by 7-day star growth
| Repository | Stars | +7d | Health | Last release |
|---|---|---|---|---|
| ccxt/ccxt | 44.6K | — | 60 | 3 days ago |
| OpenZeppelin/openzeppelin-contracts | 27.3K | — | 60 | 93 days ago |
| hyperledger/fabric | 16.8K | — | 57 | 140 days ago |
| foundry-rs/foundry | 10.7K | — | 40 | today |
| cosmos/cosmos-sdk | 7.1K | — | 62 | 60 days ago |
| Coldcard/firmware | 781 | — | 40 | — |
| Category median | 16.8K | — | 60 | — |
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