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Foundation

Foundation, legally Foundation Devices, Inc., is a US digital-security hardware and software company. Its products include Passport devices, the Envoy mobile wallet and KeyOS, extending from Bitcoin self-custody to authentication, encrypted storage and human-approved digital actions.

Contents23 sections
Key facts

Founding

Foundation was founded in April 2020 to develop Bitcoin-related hardware and software.⁠[1]

Early investor Fulgur Ventures identifies four cofounders: Zach Herbert, Ken Carpenter, Jacob Johnston and Matt Beach.⁠[2]

Public Company Introduction

Foundation publicly introduced its plan to improve Bitcoin self-custody through open hardware and accessible design, including publication of circuit schematics, design files and firmware. Its initial direction centered on hardware wallets rather than a custodial exchange.⁠[3]

$2.5 Million Pre-Seed Round

Foundation announced a $2.5 million pre-seed round led by Bolt, with participants including Third Prime. Bolt partner Tyler Mincey joined the board. The announcement said Passport shipments had begun the previous month and described plans to expand engineering, design and operations.⁠[4]

Second-Generation Passport and Envoy

Foundation introduced Passport Batch 2 and the Envoy companion app. The redesigned wallet added a color display, replaceable lithium-ion battery and power-only USB-C port. QR codes connected its workflow to a phone; Envoy guided setup and downloaded firmware for transfer through microSD.⁠[5]

$7 Million Seed Round

Envoy Becomes a Standalone Mobile Wallet

Envoy expanded from Passport’s watch-only companion into a standalone Bitcoin wallet for iOS and Android, usable without Passport. The release added Magic Backups, biometric or PIN protection and balance hiding, bringing everyday mobile spending and hardware-wallet accounts into one interface.⁠[6]

Passport Prime Announced

Passport Prime broadened the product scope to Bitcoin, multifactor authentication, security keys, seed management and 50GB of encrypted storage. Its Airlock limits which files are exposed through an external connection. The device runs KeyOS, with a roadmap for third-party applications.⁠[7]

Passport Renamed Core

The second-generation Passport was renamed Passport Core to distinguish it from Passport Prime. Core retains its Bitcoin-focused, air-gapped design, using QR codes and microSD for transactions and power-only USB-C for charging. The Passport family therefore includes devices with different communication architectures.⁠[8]

Keylabs Security Audit

Keylabs audited Passport Prime hardware and dev-v0.9.0 firmware, recording five low-severity findings involving debug access, PIN timing and sensitive-memory clearing. It found no high or critical vulnerabilities. These findings concern the assessed version and threat model, rather than guaranteeing every future release.⁠[9]

Funding and Prime General Availability

Foundation announced $6.4 million led by Fulgur Ventures with Arche Capital, bringing total funding to $16.5 million, alongside general availability of Passport Prime and access to the KeyOS developer platform. Its stated expansion covered identity, authentication and human approval beyond Bitcoin self-custody.⁠[10]

Legacy Mode Beta

The optional, manually installed Legacy Mode beta runs supported open-source Ledger applications on KeyOS. Initial support covers Ethereum and Solana, with USB compatibility tested using Rabby and Phantom. Support is limited to specified apps and assets; Foundation states that Ledger does not sponsor or endorse it.⁠[11]

KeyOS 1.4.1

KeyOS 1.4.1 fixed a multisignature-signer-list crash and several Airlock/USB file-access problems, while improving update speed and charging behavior. It added low-battery alerts and more reliable shutdown before depletion. These are release-specific improvements, not a claim that every failure mode has been eliminated.⁠[12]

Phishing Investigation

Envoy 2.3.7

Envoy 2.3.7 continued precautionary security changes, moving Passport Prime checks to a new onion address and adding verification. It also fixed screenshot protection when returning from seed words to the seed QR screen. Foundation noted that app-store review can delay availability after publication.⁠[14]

Team and Organization: Current Leadership

The current company site names cofounders Zach Herbert as CEO, Ken Carpenter as CTO and Jacob Johnston as VP of Operations, with Bitcoin QnA heading customer experience. Foundation describes its mission as building hardware and software for user control over keys, identity and consequential digital actions.⁠[15]

System Architecture: KeyOS

KeyOS is a Rust microkernel system that places apps in separate sandboxes, coordinates processes through controlled message passing and manages permissions centrally. This design supports multiple security applications; architectural isolation claims should be read alongside version-specific implementation and audit evidence.⁠[16]

Communication: QuantumLink

QuantumLink separates the Bluetooth chip from the security processor running KeyOS, relaying encrypted messages and using QR codes for out-of-band public-key pairing. Foundation describes quantum-resistant key establishment with ChaCha20-Poly1305. This wireless design differs from Core’s absence of wireless communication.⁠[17]

Mobile App: Envoy’s Role

Envoy combines a mobile hot wallet with Passport management. Hot accounts sign on the phone; cold accounts require Passport approval. It supports account viewing, transaction preparation, setup and updates. User control of wallet keys is distinct from the store’s processing of purchase information.⁠[18]

Backups: Mobile Wallet and Prime Are Separate

Foundation documents separate Magic Backups for Envoy and Passport Prime. Passport Prime’s default scheme reconstructs its master key from any two of three shares, held on two NFC cards and the phone side. The encrypted app-settings backup is distinct from the full master key; recovery depends on access to the necessary shares and accounts.⁠[19]

Developer Platform: Apps and Tools

The KeyOS platform provides Rust apps, a UI library, simulator and CLI tooling. Apps declare permissions for capabilities such as touchscreens, cameras, NFC and USB-C. The developer page labels the SDK a public beta; showcase concepts should not all be treated as generally released products.⁠[20]

Security Transparency: Source, Audits and Reproducibility

Foundation’s security hub provides threat models, source code, independent audits, responses and firmware-verification resources, including WalletScrutiny reviews of different Passport models. Open source, reproducibility and external review are distinct evidence types; none eliminates every device or surrounding-service risk.⁠[21]

Order Privacy: Commerce Data Retention

The privacy policy effective May 21, 2026 describes processing order, shipping, support and account information through Foundation and service providers. Retention varies with business, legal and system requirements; it does not promise universal automatic deletion after 60 days. Wallet-key custody and commerce-data protection are separate matters.⁠[22]

Sources

  1. Announcing Our $7M Seed Round (opens in a new window)
  2. Fulgur Ventures backs Foundation Devices (opens in a new window)
  3. Introducing Foundation Devices: a new Bitcoin hardware company (opens in a new window)
  4. Announcing Our Pre-Seed Raise (opens in a new window)
  5. Introducing Passport Batch 2 & Envoy Mobile App (opens in a new window)
  6. Announcing Envoy Wallet: Bitcoin Simplified (opens in a new window)
  7. Introducing Passport Prime! (opens in a new window)
  8. Passport is now Passport Core (opens in a new window)
  9. Passport Prime Security Audit (opens in a new window)
  10. Foundation Raises $6.4M and Launches Passport Prime, the First Human Authority Hardware Device for the AI Era (opens in a new window)
  11. Switch to Open Source Without Starting Over (opens in a new window)
  12. KeyOS version 1.4.1 is now available! (opens in a new window)
  13. Investigation Update (opens in a new window)
  14. Envoy version 2.3.7 is now available (opens in a new window)
  15. About Foundation – Human Authority Hardware (opens in a new window)
  16. Building KeyOS! (opens in a new window)
  17. QuantumLink: Reinventing Secure Wireless Communication (opens in a new window)
  18. Envoy – Foundation (opens in a new window)
  19. Magic Backups: How Do They Work? (opens in a new window)
  20. Developers – Foundation (opens in a new window)
  21. Security – Foundation (opens in a new window)
  22. Privacy Policy (opens in a new window)