Crypto: from holding it to controlling it.

Developed in Japan.Next generationcrypto wallet and signer,Openloop.

A signer device that generates and stores your private keys and approves every signature.
It connects people and AI across the full range of blockchain use cases.

Online Shop

Ships within Japan only. The store is in Japanese.

/// TRUSTED BY
NXP Semiconductors
MetaMask Compatible
Sparrow Wallet
Safe Multisig
XRP Ledger
EVM Compatible
/// TRUSTED BY
NXP Semiconductors
MetaMask Compatible
Sparrow Wallet
Safe Multisig
XRP Ledger
EVM Compatible
/// TRUSTED BY
NXP Semiconductors
MetaMask Compatible
Sparrow Wallet
Safe Multisig
XRP Ledger
EVM Compatible
/// TRUSTED BY
NXP Semiconductors
MetaMask Compatible
Sparrow Wallet
Safe Multisig
XRP Ledger
EVM Compatible
Update Log

NEWS

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News articles are currently available in Japanese only.

/// 100% AIR GAP READY
/// 0% ONLINE RISK
/// DESIGNED IN JAPAN
/// NO BACKDOORS
/// TRUE SELF-CUSTODY
/// 100% AIR GAP READY
/// 0% ONLINE RISK
/// DESIGNED IN JAPAN
/// NO BACKDOORS
/// TRUE SELF-CUSTODY
/// 100% AIR GAP READY
/// 0% ONLINE RISK
/// DESIGNED IN JAPAN
/// NO BACKDOORS
/// TRUE SELF-CUSTODY
/// 100% AIR GAP READY
/// 0% ONLINE RISK
/// DESIGNED IN JAPAN
/// NO BACKDOORS
/// TRUE SELF-CUSTODY

Not your keys,
not your coins.

If you don't hold the private key,
the assets are not yours.

Only you can approve.
Openloop.

The final approval belongs to you alone.
Openloop.

/// TECHNICAL SPECS
CC EAL6+ Certified
BIP-39 Mnemonic
BIP-44 HD Wallet
EIP-712 Typed Data
AES-256-GCM
/// TECHNICAL SPECS
CC EAL6+ Certified
BIP-39 Mnemonic
BIP-44 HD Wallet
EIP-712 Typed Data
AES-256-GCM
/// TECHNICAL SPECS
CC EAL6+ Certified
BIP-39 Mnemonic
BIP-44 HD Wallet
EIP-712 Typed Data
AES-256-GCM
/// TECHNICAL SPECS
CC EAL6+ Certified
BIP-39 Mnemonic
BIP-44 HD Wallet
EIP-712 Typed Data
AES-256-GCM

With the arrival of stablecoins such as USDC and JPYC, crypto has undergone an irreversible shift
— from a purely speculative asset class into social infrastructure that moves the world.
And now the AI economy is opening up, in which AI agents carry out economic activity on their own.
Openloop is a crypto wallet and signer, developed in Japan, that lets you grant absolute approval
to assets kept completely isolated from an ever-evolving landscape of network threats.

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Visionaries are Watching.

The pioneers of our era have their eyes on this innovation.

Takafumi Horie

Entrepreneur / Investor

"A hardware wallet project out of Japan, launched single-handedly by Mr. Asada — an authority in encrypted communications since the dawn of the internet, and strong in hardware design too..."

Read more →

Shinichiro Kadota

CEO, LINKSPACES Inc. / Strategic Advisor, Tokyo Kiraboshi Financial Group / Advisor, SP.LINKS Inc. (formerly Sony Payment Services) / Councilor and Chair of the Information Sharing Promotion Committee, Generative AI Utilization Promotion Association (GUGA)

"Mr. Asada showed me the actual device, and I was moved by a UI/UX design that even people new to crypto can use with confidence..."

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Yoichiro Hirano

President and CEO, Asteria Corporation / Project Professor, Graduate School of Management, Kyoto University

"Openloop is the long-awaited domestically developed hardware wallet. In the age of AI agents, it is an essential item for using stablecoins safely..."

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Keita Konishi

President and CEO, Money Partners Solutions Inc. / Vice Chairman and Head of the Finance Committee, Blockchain Collaborative Consortium (BCCC) / Deputy Head of the Systems and Security Committee, Japan Cryptoasset Business Association (JCBA)

"Through the efforts of Dr. Asada, a leading figure in information security and cryptography, the long-awaited hardware wallet from Japan has arrived..."

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Hideto Fujino

President and CEO, Rheos Capital Works Inc.

"In an age where stablecoins are spreading and AI handles travel and shopping on our behalf, everyone will need one trustworthy wallet..."

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Mamoru Taniya

Chairman of the Board, Money Design Co., Ltd. / Chairman of the Board, Recika Co., Ltd.

"As an investor in the information security company Mr. Asada founded in 1997, I have deep respect for what he has built single-handedly under that same name, Openloop..."

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Sam Furukawa

"Mr. Asada and I go back some forty years, to when he joined ASCII as a new graduate. We have worked on all kinds of projects together ever since..."

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Watch the project as it happens, in real time

From speculative crypto to
technology empowering society.

Raising cryptography from a speculative tool for the few into a tool the many use to build society

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