(PaaS) Privacy as a Service - Custodian

Peace-of-mind cold storage of crypto assets in the Bit-Bank Vault.


Cold Key Storage

The key lifecycle is entirely air-gapped to minimize the attack surface.

Transaction Signing

Customers must initialize all transactions to be processed.

Entropy & Client Account Segregation

Client accounts are segregated at the root entropy level. No shared omnibus.

Strict Process Isolation

All servers and customer terminals boot into a secure environment.

Partitioning & Physical Segregation

Each root key in a customer’s multisig scheme is handled by a distinct physical device in a distinct data center behind a distinct firewall.

Data Storage & Encryption

Most sensitive secrets are stored on BitBank Secure Modules and cannot be retrieved.

Client Account Backups

Encrypted wallet key backups are using Shamir’s Secret Sharing Scheme.

Key Backup Storage & Retrieval

A security and logistics firm is responsible for storage and retrieval of backups.

Client Authentication

All Bit-Bank clients are required to use three-factor authentication.


ISAE 3402 Audited

and Pen-tested

Audited by PricewaterhouseCoopers, Grant Thornton and Zühlke and penetration tested by Compass Security.


Proven multi-signing process for
 optimal governance
of assets.

Multiple Assets

Support for BTC, ETH, DOT, ATOM, ADA, XTZ, BCH, KSM, BSV, XRP, all Ethereum ERC-20 and Tezos FA1.2/2 tokens and many more.


Set-up and account configurations customizable to client needs.

Private Custodian Service

We offer  our clients a discreet and private Custodian Service, served from Switzerlands Fort Knox data centre we give clients the finest in privacy, security and discretion.

Zero Knowledge Proof (ZKP) Cold Wallet Custodian. Private Oracle Databases and the use of the highest and security standards.

ISO27001 and IEEE 299 Certified Data Centers.

Clients receive secure and discreet 24/7 Custody –  The Private Key is completely controlled by the client and sharded for protection in 3 different places, our server is secure and air gapped to minimise attack possibilities, we do not have or own keys to your holdings, which means our clients control their private keys and sign their transactions, we are locked out of your holdings. The cold wallets are completely 3FA  authorised by the client.

Three factor authentication, Multi Party Authorisation, and RSA signatures are required for moving funds from the Custodian account, our blockchain and coins hosted in our data centre are our Stable Coins, Exchange Tokens and DAO Bonds which are all privacy enabled cryptocurrencies on the XDC blockchain.

We also implement Onion servers in between our clients three factor signing transactions and back to our data centres.

Keybackups, Security and Insurance are available.

Our data centre is known as the Swiss Fort Knox, it is Europes safest data centre, protected and situated in the heart of the Swiss Alps, we host our data in an ex Swiss Military Bunker, the buildings have excellent structural and sturdy design which makes them resistant to Military and Civilian Threats. There is also a runway and customs for private jet/plane and helicopter access to the bunker, we have full protection against  NSA Prism snooping. Encoding of all of our data using the 256 AES encryption standard.

This service is for High Net Worth or Ultra High Net Worth Individuals only.

Book an appointment today to speak to one of our Wealth Management Advisors.

Our Partner's