Summary: Casa is better cataloged as collaborative self-custody-and-recovery infrastructure than as a simple wallet or custodian. Its primary-source footprint combines a mobile wallet, 2-of-3 and 3-of-5 vault architectures, a Casa-held emergency recovery key, delayed identity-verified recovery flows, sovereign recovery instructions that work with open-source software, and a seedless hardware-wallet posture that treats key replacement and operational support as part of the security model itself. The current homepage title emphasizes bitcoin and stablecoins, while the Wealth Security Protocol documentation frames the product around the Bitcoin and Ethereum ecosystems, which is also a useful signal that the real source of truth is the docs corpus rather than the marketing page alone.
What it does:
Offers multiple custody tiers through the Casa app, including a 1-of-1 mobile Pay Wallet, a 2-of-3 Bitcoin vault, and a 3-of-5 Bitcoin vault for higher-security storage
Distributes keys across a phone, one or more hardware devices, and a Casa-held emergency recovery key so that Casa can assist in recovery without being able to unilaterally control funds
Runs emergency recovery through a private identity-verification process with signing delays and user notifications to reduce the chance of fraudulent recovery requests
Provides sovereign recovery instructions so balances can be recovered with widely available open-source software rather than depending on Casa tools
Promotes a seedless-hardware-wallet operating model in which keys can be swapped out when devices are lost, while still allowing users to choose how many hardware-device seed phrases to back up
Positions the Casa app, support flows, and advisor services as part of the security architecture, explicitly balancing theft risk against loss risk
Key claims:
The Wealth Security Protocol overview says Casa provides secure storage solutions for digital wealth in the Bitcoin and Ethereum ecosystems and that its flagship product is the Casa app, a software-and-expert-service system for cryptographic key security and usability
The overview frames cryptocurrency security around the tradeoff between theft and loss and says Casa’s Wealth Security Protocol is meant to minimize both at once
The 3-Key Vault docs describe a 2-of-3 setup with one key on the client’s phone, one hardware key, and one Casa emergency backup key, plus assisted recovery, cloud-backed encrypted mobile-key backup, and the Casa mobile app
The 5-Key Vault docs describe a 3-of-5 setup with one mobile key, three hardware keys in separate physical locations, and one Casa emergency backup key, plus advisor support, emergency lockdown, and assisted recovery if two keys are lost
The Emergency Recovery Key docs say Casa will only use its recovery key after the client verifies setup data and that the Casa signature still must be combined with enough client signatures to complete a recovery transaction
The account-recovery docs say Casa uses a private authentication process with a significant signing delay and repeated user notifications when a recovery request is made
The Sovereign Recovery Instructions docs say all Casa balances can be recovered with widely available open-source software and that clients are never dependent on Casa or Casa tools to access assets
The Seedless Hardware Wallets docs say Casa deliberately chose not to rely on manually backed up recovery seeds by default and instead makes key replacement part of the operational security model
The homepage title currently says “Secure Storage for Bitcoin and Stablecoins,” while the main protocol docs describe Casa as operating in the Bitcoin and Ethereum ecosystems; this homepage/docs scope drift is worth noting explicitly
Whitepaper: No canonical Casa whitepaper or litepaper surfaced in this pass. The clearest current source of truth is Casa’s Wealth Security Protocol documentation and related recovery/key-management pages; see ../whitepapers/casa-primary-sources-2026-05-01.md.
Reusable lens: Casa is useful whenever a system calls itself self-custody while keeping real leverage in recovery procedure, identity checks, and support-mediated continuity.