Proof of Custody scores and ranks bitcoin custody platforms against a single public methodology, applied identically to every platform. We exist because the question that matters most for bitcoin, who actually holds the keys, is the hardest one to compare across providers.
Give holders, advisors, family offices, and institutions a neutral, reproducible way to evaluate custody. We reward architectures that distribute control and segregate assets, and we say plainly where a platform concentrates risk. Facts inside a framework, applied to everyone.
Custody security is the highest-weighted dimension in our scoring. Every platform is graded against the same criteria, and every change to the framework is logged publicly. Read the full methodology, the changelog, and our corrections log.
Proof of Custody is published by Onramp Bitcoin. Onramp is scored by the same public methodology as every other platform, with no special treatment. Read our editorial independence policy for how we handle that relationship.
Proof of Custody is written and reviewed by engineers and bitcoin product builders. Meet the authors.