Systems and methods of managing a shared cryptographic account for a first user and at least one second user in a blockchain based computer network, including: generating, by a first computing device of the first user, a first share of a cryptographic key, generating, by a server, a corresponding second share of the cryptographic key, wherein the cryptographic key corresponds to a public key and private key pair, and wherein the private key is configured to decrypt shares of the cryptographic key that are encrypted by the public key, generating a group ID for a group of users of the shared cryptographic account, distributing, by the server, the first share among each of the at least one second user, and enforcing a signing logic scheme for users of the group when signing with the shared cryptographic account.