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About

Copperhead is an open source AI engineering platform that helps hardware teams design, verify, and ship circuit boards. You describe a change or provide a product brief, and the agent edits real KiCad files, updates the documents that reference them, and runs KiCad’s own checks until they pass. Its end-to-end workflow moves through specification, architecture, parts selection, schematic, layout, outputs, firmware, and development planning, with each stage required to leave a real artifact on disk before the next begins. Gates verify budgets, subsystem reasoning, datasheet-backed part numbers, ERC-clean schematics, DRC-clean layouts, generated Gerbers, firmware sources, and written bring-up plans. Copperhead is also designed for existing boards: point it at a KiCad repository, initialize the project, and ask for changes. Edits are surgical changes to KiCad source files, keeping diffs small and reviewable while untouched portions remain unchanged.

About

100% air-gapped QR code solution Cold wallet. First hardware wallet Integrated with MetaMask Mobile. By using QR code transmissions, we have eliminated potential malware infiltration risks and delivered a level of transparency that just isn't possible with Bluetooth or USB. A proprietary bank-grade Secure Element ensures your private keys never leave the Keystone. The Secure Element generates a true random number for your private keys and is vital to ensuring your crypto assets are stored in the safest way possible. Our BIP32, BIP39, and BIP44 compliant firmware is also open source. Keystone has pioneered the hardware wallet industry’s first open source Secure Element firmware. It allows you to see how private keys are derived from physically generated entropy (TRNG) and stay entirely confined within the Secure Element. Our hardware wallet application layer, device schematic (circuit diagram), and bill of materials (BOM) are also open source.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Supported
iPad Not Supported
Android Supported
Chromebook Not Supported

Audience

Hardware engineers and electronics teams searching for a solution to design, modify, document, and verify circuit boards with an AI agent working directly on real KiCad projects

Audience

Anyone searching for a cold storage solution to manage their crypto assets through QR code transmissions

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$49 per month
Free Version Supported
Free Trial Not Supported

Pricing

$24 one-time payment
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 5.0 / 5
ease 4.8 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Pros & Cons from Real Users

Pros

  • Metamask is by far the best option for DeFi but hot wallets are very risky by nature. Luckily there are several hardware wallet options for Metamask PC/Mac (Trezor and Ledger being the most popular). However, neither of those 2 companies work with Metamask mobile. This is where Keystone shines. Now you have the ability to use Metamask on the go but keep your DeFi assets safely protected by the Keystone hardware wallet. Integration with Metamask is excellent and now I am safe knowing my Metamask wallet won't be hacked.
  • 1. Great customer support with quick responses 2. Only hardware wallet got integrated with MetaMask Mobile 3. Heard that they have developed in the community more than 5 years, quite a promising brand
  • 1. The QR code is a great way to make sure that the Keystone wallet is not connected to the internet. 2. Confirming the recovery phrase is one of a kind experience, way much better than other hardware wallets I used before. 3. Open-source nature of their Secure Element makes me feel safe when I create a new wallet.
  • 100% Air gapped, Fully integrated with MetaMask, The only hardware wallet supported by MetaMask mobile. The 4-inch screen makes it very user friendly and make the transaction more transparent. Solved blind-signing. Support are very reactive.

Cons

  • The battery system needs to be upgraded.
  • 1. Doesn't have enough coin support yet, hope to see Doge in the list
  • The number of coins they support is limited right now, but it seems that they have been integrating with many soft wallets on various chains in the past few months.
  • Company app doesn't support swap, the team believe the future of blockchain is a multi-chain one, therefore, the team is aiming at become the extra security layer of all the popular software wallets.

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Copperhead
Founded: 2026
India
copperhead.sh/

Company Information

Keystone
Founded: 2018
HK
keyst.one/

Alternatives

Alternatives

Bitkey

Bitkey

Block, Inc.
SpeedUp

SpeedUp

SpeedUp AI
DipTrace

DipTrace

Novarm Ltd

Categories

AI Coding Agents Supported

Categories

Cold Wallets Supported
Crypto Wallets Supported

Integrations

BlueWallet Not Supported
Electrum Not Supported
JSON Supported
Juicebox Not Supported
KiCad EDA Supported
Kwikswap Not Supported
MetaMask Not Supported
Rabby Not Supported
Scroll Not Supported
SushiSwap Not Supported
VarenX Not Supported
Wasabi Wallet Not Supported

Integrations

BlueWallet Supported
Electrum Supported
JSON Not Supported
Juicebox Supported
KiCad EDA Not Supported
Kwikswap Supported
MetaMask Supported
Rabby Supported
Scroll Supported
SushiSwap Supported
VarenX Supported
Wasabi Wallet Supported
Claim Copperhead and update features and information
Claim Copperhead and update features and information
Claim Keystone Wallet and update features and information
Claim Keystone Wallet and update features and information