Onramp completes $12.5 million Series A financing, valued at $135 million According to Foresight News, Bitcoin custody platform Onramp has completed a $12.5 million Series A funding round, valuing the company at $135 million. The news was revealed to Axios Pro by CEO Michael Tanguma. \Onramp is dedicated to helping large Bitcoin holders distribute their assets across multiple institutions, eliminating the need for users to rely on a single custodian or manage their own private keys.