Sepior provides next generation key management technology that allows businesses to transact online with institutional-grade cryptocurrency wallets, private blockchains, and SaaS applications. Sepior is pioneering the industry transition to threshold cryptography, using multiparty computation (MPC) to address the need for data confidentiality, integrity, and availability of new and emerging online services. For cryptocurrency exchange providers and other institutional traders, Sepior solves the problem of securing the private keys associated with cryptocurrency stored in wallets, facilitating institutional-grade of wallet security for service providers and their customers. Sepior’s approach also dramatically reduces mining workloads and complexity of on-chain operations. For blockchain platform and app providers, Sepior solves the problem of enterprise-grade data confidentiality and privacy by enabling fine grained access control over who has access to specific information stored on the blockchain. Sepior enables this capability without the need for channels, and does so in a manner with dramatically improved simplicity and costs. For Cloud Service Providers (CSPs), Sepior solves the problem of providing end-users with a cost-effective option to subscribe to enterprise-grade encryption through key management as a service (KMaaS) running in the CSP’s cloud. Sepior enables CSPs to offer industry leading data encryption services, including support for BYOK, without the subscriber or the CSP having to take on the cost or operational complexity of procuring, managing, and scaling hardware security modules (HSMs).