A next-generation crypto wallet, signer and security key, conceived and developed in Japan.
Built around a financial-grade secure element.
From managing and signing with private keys through to verifying who you are, it works across a wide range of situations.
Only you, the owner, can approve.
Openloop protects not only your assets on the blockchain but your digital identity itself. Every kind of digital authentication, handled securely by this one device.
Crypto assets and blockchain signing
At the heart of Openloop sits a secure element certified to EAL6+, a world-class security standard. That chip is used to generate, store and sign with private keys via ECDSA, EdDSA and RSA. Private keys never leave the device.
It supports stablecoins including JPYC, USDC and USDT. As stablecoins become social infrastructure in the years ahead, Openloop is a crypto wallet and signer, developed in Japan, that physically guarantees the final human approval.
At its core is a secure element certified to EAL6+, a world-class security standard.
Everything from generating your most critical asset — the private key — through to processing signatures is completed inside a device isolated from the internet. Leakage to the outside is physically blocked.
In the era ahead, where AI begins to act on its own, the last signature that moves your assets is still made by a human hand. Openloop is the one tool built to support that act of responsibility.
Passkeys and PIV
Passkeys work on smartphones and PCs too. But that means entrusting your credentials to a device exposed to viruses and malware. For the accounts you truly want to protect, a dedicated security key that is physically isolated from the internet is essential.
The name of the service you are signing in to and your ID appear on the screen, and you approve with a touch. Seeing it, confirming it, then touching to authenticate is what stops phishing and man-in-the-middle attacks. Openloop stores up to 100 resident keys and delivers strict access control in which only the person holding that Openloop can sign in. It also slots straight into your existing two-factor authentication.
Openloop implements PIV (Personal Identity Verification) in line with the US government standard NIST SP 800-73. A single device covers the advanced authentication infrastructure that enterprises and public agencies require — corporate VPNs, PC login (Active Directory), digital signatures, SSH access and more. Certificates and cryptographic keys are held in four slots inside Openloop and used as needed. Signing takes place inside the secure element.
ECDSA and EdDSA, used by passkeys. RSA and elliptic-curve cryptography, used by PIV smart card authentication. And ECDSA and EdDSA again, used for blockchain signatures. Line the names up and it becomes obvious: these all belong to the same family — public-key cryptography.
In other words, passkey authentication, smart card authentication and blockchain signing all rest on the same underlying cryptography. What differs is only the protocol it runs over and the purpose it serves.
Openloop was originally developed as a blockchain signing device. It has a track record of performing these cryptographic operations inside a secure element certified to EAL6+, the world's highest tier of security certification. Placing passkey and PIV functions on that same chip and the same crypto engine is not a matter of cramming features in — it is a technically natural extension.
That is precisely why passkey authentication and PIV authentication on Openloop run at the same security level as blockchain signing. With no compromise anywhere, three authentication foundations share one device's security. This is the strength of Openloop's architecture.