Onramp Finance closed a $12.5M Series A funding round led by Early Riders at a $135M valuation, backing the startup’s Multi-Institution Custody model as a middle ground between centralized exchange risk and self-custody complexity. The round supports expansion of Onramp’s financial services platform, which combines bitcoin custody, brokerage, and cash management tools across 50 U.S. states. The company manages over $1B in assets under custody with zero security incidents since its 2023 founding.
Multi-Institution Custody Addresses Institutional Custody Tradeoffs
Onramp’s MIC model distributes private key control across multiple regulated custodians—BitGo, Coincover, and Tetra Trust—to eliminate single points of failure. Traditional custodians concentrate counterparty risk on one platform. Self-custody demands technical infrastructure most institutions lack. Onramp’s approach splits custody responsibility, requiring collusion across multiple independent operators to compromise assets. The Bitcoin Policy Institute has endorsed MIC as a framework for industry adoption. CEO Michael Tanguma stated the company aims to build a full financial stack around bitcoin, including lending, retirement accounts, and treasury management tools.
Early Riders Leads Series A to Establish Custody Standard
Early Riders partner Liam Nelson said the firm backed Onramp to help establish MIC as a standard across the industry, arguing that custody design will shape the next phase of bitcoin adoption. The $12.5M capital injection funds product development and geographic expansion. Onramp Finance launched in April 2026 and already counts Cartwright, a UK pension fund, among its custody clients. The startup operates brokerage services in all 50 states, positioning it as a full-stack institutional platform rather than a custody-only provider. Former Blackstone partner David Thayer serves as strategic advisor.
Custody Competition Intensifies as Institutions Demand Alternatives
The bitcoin custody market has fragmented beyond traditional players. Coinbase, Kraken, and Genesis operated centralized custody models before regulatory or operational failures. Self-custody platforms like Casa and Unchained offer distributed key management but lack integrated financial services. Onramp sits between these poles—regulated custody without concentration risk, plus brokerage and cash management. The $1B+ in assets under custody signals institutional confidence in the MIC model. Series A momentum suggests venture capital views distributed custody as essential infrastructure for institutional bitcoin adoption at scale.
Next Milestone: Scaling Financial Services Across MIC Infrastructure
Onramp has not disclosed how the $12.5M will split between product development and distribution expansion. Planned launches include lending products, retirement account structures, and treasury management tools. The company’s zero security incidents and $1B+ AUM provide proof of custody reliability. Institutional adoption—pension funds, family offices, and corporate treasuries—will determine whether MIC becomes industry standard or remains a niche alternative.
