Transparent Bitcoin Custody

CheckSig provides transparent bitcoin custody solutions for institutional investors and high-net-worth individuals.
We reject security by obscurity in favor of an extremely auditable process: our main solution is based on a public open standard protocol: multi-level, multi-party, and multi-location, it provides periodic proof-of-reserve blockchain transactions, is hardened by customized multi-signature hardware, and is covered by insurance guarantees.
We customize our custody services according to client's requirements: long term safe storage, inheritance plan, or arbitrage trading, we empower the way you store your bitcoins.

About the protocol

Bitcoin is about financial sovereignty and having direct control of your keys because, as people say, not your keys, not your bitcoins. Nonetheless, there are cases like institutional investors, high-net-worth individuals, lack of proper technical skills, etc. where a custodial solution might be convenient or even prescribed.

CheckSig implements an open transparent multi-party custody protocol that:

  • avoids reliance on "security by obscurity", being an auditable public standard subject to peer review;
  • provides transparency to the custodian's clients, so that they can be certain that their assets are held in a secure manner.

The guiding principles defining this protocol are:

  • to store the bitcoins under custody in such a way as to minimize risk of loss of funds through theft, error, or other mishaps;
  • to rely on the Bitcoin protocol implementation for security wherever possible, rather than inventing new functionality or procedures;
  • to remain neutral regarding future changes to the Bitcoin protocol.



Ferdinando M. Ametrano

Executive Director

Digital Gold Institute executive director,
Bitcoin and Blockchain Technology adjunct professor at the University of Milano-Bicocca, Crypto Asset Lab scientific director, Hayek Money promoter. Formerly Head of Blockchain & Virtual Currencies at Intesa Sanpaolo, Scaling Bitcoin Planning Committee member.


Eric Ehlers

Technical Officer

Digital Gold Institute technical officer,
cofounder and director of Reposit Limited, providing consulting services in the domain of quantitative finance. QuanLibXL project founder. Formerly 12 years at J.P. Morgan Chase, first in IT management and later as technical lead for front-office pricing spreadsheets.


Paolo Mazzocchi

Operating Officer

Digital Gold Institute operating officer,
Crypto Asset Lab faculty member,
Interest Rate Derivatives assistant lecturer at the University of Milano-Bicocca.
Formerly Quantitative Finance consultant in Deloitte for 5 years, Master's degree in Mathematical Engineering at Politecnico di Milano.

Team Members


Lucia Mandelli

Business Developer

Digital Gold Institute business developer,
Formerly 8 years of hands on entrepreneurial experience and Vice President of “Giovani Imprenditori di Confindustria Parma”


Diego Giubertoni

Security Officer

Formerly 10 years in cyber security R&D and consultancy,
Master's degree in Computer Science at Università degli Studi di Milano

Corso di Porta Romana 61, 20122 Milano (MI) - ITALY