The world’s safest Bitcoin custody solution.

The security of your investments and your clients’ funds is a serious matter.
That’s why we guarantees to our clients:

  • An ultrasafe custody protocol, the only one with a blockchain proof of reserve: a perfect solution for financial institutions, exchange and trust companies, fund managers and family offices.
  • A flexible operational management of the funds, safe and worry free, ideal also for private investors.

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Transparent security

We reject the “security-by-obscurity” paradigm in favor of a transparent custody process.

Cooler than cold

Our true multi-signature (no multi-party computation) set-up is operated from different geographic locations, and involves three independent authorization levels managing two storage layers:

  • The frozen storage is managed by CheckSig with the involvement of a federation of independent legal entities, used for maximum protection in safeguarding all client assets. To move Bitcoins from the frozen storage, 2-of-3 CheckSig pre-authorizations and 3-of-5 federation signatures are required; moreover, Bitcoin can only be moved to the cold storage.
  • The cold storage is managed by CheckSig, used as a temporary staging area during withdrawals. To move Bitcoins from the cold storage, 2-of-3 CheckSig signatures are required and Bitcoins can be moved only after few days after receiving them from the frozen layer, to allow for additional thorough internal controls.

No hot wallets, ever

CheckSig secures your Bitcoins using multiple keys, which are stored offline. For all our internal operations we adopt customized (locked-down) hardware security modules from state-of-the-art industrial-grade hardware wallet providers.