Buying Bitcoin is easy, but security is complex

You can easily buy Bitcoin, but if you don’t have a security management plan in place you are at a high risk of losing your hard-earned investment.

Bitcoin custody solution with CheckSig means not only a transparent process, but also a true multi-level multi-signature set-up for maximum protection and never having to worry about hot/cold wallet and private keys.

CheckSig makes your Bitcoin custody safe and worry free so you can simply focus on your business.

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.