Capital B Raises $18M for Bitcoin Treasury Services

Paris-based Capital B announced an $18 million funding round that included participation from Bitcoin developer Adam Back and a mix of institutional and private investors, the company said. The proceeds will be used to expand its bitcoin treasury services for corporate clients in France and across Europe.

Capital B provides services that help companies hold bitcoin on their balance sheets, combining custody, compliance and treasury-management offerings. The fresh capital will support product development and the scaling of custody operations, compliance processes and treasury-management tools.

The firm works with corporate treasurers and finance teams to integrate bitcoin into corporate reserves and to manage custody and operational risks associated with on-chain assets. Capital B did not disclose the full list of investors, valuation or the structure of the investment.

Capital B operates under French financial-services regulation and offers regulated pathways for companies to hold bitcoin without assuming direct operational custody responsibilities. The company said the funding will accelerate hiring across engineering, compliance and client-facing teams.

Its services typically combine custody solutions with treasury advisory, accounting support and reporting tools intended to help boards and finance teams reconcile bitcoin holdings with accounting and regulatory standards. The firm serves clients that prefer dedicated treasury arrangements outside traditional brokerage or exchange channels.

Adam Back’s participation adds technical and industry credibility, the founders said. Capital B plans to use the funding to expand services to more European clients and to develop its infrastructure for secure custody and treasury operations.

In recent years some corporations and institutional investors have allocated portions of cash reserves to bitcoin as an alternative store of value. Capital B is one of several companies in Europe offering custody, compliance and treasury services designed to address regulatory and operational requirements for corporate bitcoin holdings.