Unbound's Crypto Asset Security Platform:

Unbound’s Crypto Asset Security Platform enables ultra-fast transaction signing and advanced risk-based approval policies which scale as your business grows. Leveraged by the world’s top exchanges and banks, based on FIPS 140-2 L2 validated infrastructure, CASP eliminates the tradeoff between security and usability and takes both to the next level.

Secure Like It's Cold

Transact Like It's Hot

Watch Your Business Grow

Enabled by secure multi-party computation technology, CASP keeps keys secure by splitting them – and never putting the parts together. CASP’s underlying infrastructure has received FIPS 140-2 Levels 1 & 2 validation by the National Institute of Standards and Technology (NIST).
Protect your keys from within and without. Pre-define as many authorizers as you want for each transaction – human or bot, employee or client. You can even program sets within sets.
Set different authorization policies to meet your institution’s needs. Handling large sums? You can program different thresholds to require extra authorization with a few clicks. Thresholds can be set based on asset type, account status, time of transaction request, or location of the user account.

What Our Customers Say

“ Unbound’s solution significantly enhances the efficiencies of our wallets’ asset management process.” Hitoshi Hasegawa, COO of Binfinity
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“We did an extensive evaluation of the custody partners that were suitable for us and Unbound met all our requirements and more.” Graham Rodford, CEO of Archax
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“The robust, tested and vetted technology delivered by Unbound, coupled with high responsiveness and professionalism of the team, helped us go to market quickly.” Seth Melamed, Head of Business Development and Sales at Quoine/Liquid
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Different Packages to Meet Your Organization’s Needs

Open Source Library

Open Source Library

Allows for secure transactions between two parties, zero-knowledge backup, HD wallets, all through a cryptography API.

CASP for Custodians & Exchanges

CASP for Custodians & Exchanges

Supports multi-party transactions, biometric authorization, batch transactions, a high-level platform API, quorum structures, risk-based policies – and more.
Go to Packages


See Fast Digital Asset Transactions in Action with CASP Watch a lightning-fast withdrawal approved by both bots and humans.
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Set Flexible Approval Policies for Digital Asset Transactions with CASP Watch how you can set admins permissions, flexible approval policies, and other critical settings with just a few clicks.
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Developer APIs, open-source code, and tools to optimize CASP

Embed our developer-friendly, modular APIs into your platform to launch a digital asset signing solution tailored to your unique needs. Learn more about our APIs, open-source software, and the underlying technology of CASP, multi-party computation (MPC). Learn More