Bitcoin self-custody company Casa has raised $21 million in a round led by Acrew Capital in addition to releasing a new API that will enable businesses to integrate multisig wallets. Casa Raises $21M in Series A Funding According to an announcement, Bitcoin self-custody company Casa raised $21 million in its Series A round. The round was led by Acrew Capital, with participation from previous investors Avon Ventures, Stillmark, Tioga Capital, Castle Island Ventures, and Lerer Hippeau. New investors also participated in the round including Positive Sum Ventures, AngelList CEO Naval Ravikant and Adobe Chief Product Officer Scott Belsky. Last February, the firm raised $4 million in seed funding. The funds will allow Casa to expand operations and build resources and features that allow individuals to gain access to their funds by more secure means. Releasing New API In addition to the funding round, the company has also announced a new application programming interface (API) that will enable businesses to integrate multisig wallets into their products and allow users to authenticate using their personal wallets for third-party services while still maintaining control of their keys. “We created Casa API, which makes it easy for trusted organizations to start integrating with Casa customers’ wallets all while the customer continues to hold the keys,” said Neuman.Casa co-founder and CEO Nick Neuman. Users will be able to confirm finan...