Abstract: Systems and methods for public ledger authentication includes receiving a first previous authentication public ledger address and a first current authentication public ledger address from a user. A verified static user key is identified in a public ledger using the first previous authentication public ledger address. A second current authentication public ledger address is then provided to the user for use in the current authentication attempt. Authentication attempt information is determined that includes a number of authentication attempts by the user, and used in a hash operation with the verified static user key to generate a first user authentication key. A second user authentication key is retrieved from the public ledger that was sent from the first current authentication public ledger address to the second current authentication public ledger address in a transaction, and the user is authenticated if the second user authentication key matches the first user authentication key.

Abstract: Virtual currency ledger secured physical currency transmissions include receiving a physical currency transfer request from a physical currency receiver device of a physical currency receiver, and identifying a physical currency deliverer device of a physical currency deliverer. A physical currency delivery confirmation code is then associated with a recipient identified in the physical currency transfer request, and a virtual currency address controlled by the physical currency deliverer and included in a virtual currency public ledger is identified to the physical currency receiver device. A reimbursement request code is then received from the physical currency deliverer device and verified using the physical currency delivery confirmation code.

Abstract: Virtual currency ledger secured physical currency transmissions include receiving a physical currency transfer request from a physical currency receiver device of a physical currency receiver, and identifying a physical currency deliverer device of a physical currency deliverer. A physical currency delivery confirmation code is then associated with a recipient identified in the physical currency transfer request, and a virtual currency address controlled by the physical currency deliverer and included in a virtual currency public ledger is identified to the physical currency receiver device. A reimbursement request code is then received from the physical currency deliverer device and verified using the physical currency delivery confirmation code.

Abstract: Systems and methods for public ledger authentication includes receiving a first previous authentication public ledger address and a first current authentication public ledger address from a user. A verified static user key is identified in a public ledger using the first previous authentication public ledger address. A second current authentication public ledger address is then provided to the user for use in the current authentication attempt. Authentication attempt information is determined that includes a number of authentication attempts by the user, and used in a hash operation with the verified static user key to generate a first user authentication key. A second user authentication key is retrieved from the public ledger that was sent from the first current authentication public ledger address to the second current authentication public ledger address in a transaction, and the user is authenticated if the second user authentication key matches the first user authentication key.

Abstract: Systems and methods for public ledger authentication includes receiving a first previous authentication public ledger address and a first current authentication public ledger address from a user. A verified static user key is identified in a public ledger using the first previous authentication public ledger address. A second current authentication public ledger address is then provided to the user for use in the current authentication attempt. Authentication attempt information is determined that includes a number of authentication attempts by the user, and used in a hash operation with the verified static user key to generate a first user authentication key. A second user authentication key is retrieved from the public ledger that was sent from the first current authentication public ledger address to the second current authentication public ledger address in a transaction, and the user is authenticated if the second user authentication key matches the first user authentication key.

Abstract: A method for detecting fraudulent logins at a payment system is discussed. The method includes receiving a suspect login request for logging into an existing user account at the payment system. The method includes providing access to a duplicate user account responsive to receiving the suspect login request, the duplicate user account being a copy of a portion of the existing user account. The method includes initiating a fraud determination of whether the suspect login request is fraudulent. The method includes receiving a request for transferring a first amount of funds from the existing user account to another account. The method includes providing an indication that the first amount of funds is being transferred to the another account. The method also includes delaying a transfer of the first amount of funds to the another account until receiving results of the fraud determination.

Abstract: A method for detecting fraudulent sign-ups at a payment system is discussed. The method includes receiving a suspect sign-up request for creating a new user account at the payment system. The method includes providing access to a new duplicate user account responsive to receiving the suspect sign-up request, the new duplicate user account imitating the new user account. The method includes initiating a fraud determination of whether the suspect sign-up request is fraudulent. The method includes receiving a request from the user device, the request for adding a new financial account to the new user account. The method includes providing an indication of an addition of the new financial account to the new user account. The method also includes delaying the addition of the new financial account to the new user account until receiving results of the fraud determination.

Abstract: Systems and methods for public ledger authentication include receiving a first previous authentication public ledger address and a first current authentication public ledger address from a user. A verified static user key is identified in a public ledger using the first previous authentication public ledger address. A second current authentication public ledger address is then provided to the user for use in the current authentication attempt. Authentication attempt information is determined that includes a number of authentication attempts by the user, and used in a hash operation with the verified static user key to generate a first user authentication key. A second user authentication key is retrieved from the public ledger that was sent from the first current authentication public ledger address to the second current authentication public ledger address in a transaction, and the user is authenticated if the second user authentication key matches the first user authentication key.

Abstract: Systems and methods for public ledger authentication includes receiving a first previous authentication public ledger address and a first current authentication public ledger address from a user. A verified static user key is identified in a public ledger using the first previous authentication public ledger address. A second current authentication public ledger address is then provided to the user for use in the current authentication attempt. Authentication attempt information is determined that includes a number of authentication attempts by the user, and used in a hash operation with the verified static user key to generate a first user authentication key. A second user authentication key is retrieved from the public ledger that was sent from the first current authentication public ledger address to the second current authentication public ledger address in a transaction, and the user is authenticated if the second user authentication key matches the first user authentication key.

Abstract: Virtual currency ledger secured physical currency transmissions include receiving a physical currency transfer request from a physical currency receiver device of a physical currency receiver, and identifying a physical currency deliverer device of a physical currency deliverer. A physical currency delivery confirmation code is then associated with a recipient identified in the physical currency transfer request, and a virtual currency address controlled by the physical currency deliverer and included in a virtual currency public ledger is identified to the physical currency receiver device. A reimbursement request code is then received from the physical currency deliverer device and verified using the physical currency delivery confirmation code.

Abstract: A method for detecting fraudulent sign-ups at a payment system is discussed. The method includes receiving a suspect sign-up request for creating a new user account at the payment system. The method includes providing access to a new duplicate user account responsive to receiving the suspect sign-up request, the new duplicate user account imitating the new user account. The method includes initiating a fraud determination of whether the suspect sign-up request is fraudulent. The method includes receiving a request from the user device, the request for adding a new financial account to the new user account. The method includes providing an indication of an addition of the new financial account to the new user account. The method also includes delaying the addition of the new financial account to the new user account until receiving results of the fraud determination.

Abstract: A method for detecting fraudulent logins at a payment system is discussed. The method includes receiving a suspect login request for logging into an existing user account at the payment system. The method includes providing access to a duplicate user account responsive to receiving the suspect login request, the duplicate user account being a copy of a portion of the existing user account. The method includes initiating a fraud determination of whether the suspect login request is fraudulent. The method includes receiving a request for transferring a first amount of funds from the existing user account to another account. The method includes providing an indication that the first amount of funds is being transferred to the another account. The method also includes delaying a transfer of the first amount of funds to the another account until receiving results of the fraud determination.

Abstract: Systems and methods for public ledger authentication includes receiving a first previous authentication public ledger address and a first current authentication public ledger address from a user. A verified static user key is identified in a public ledger using the first previous authentication public ledger address. A second current authentication public ledger address is then provided to the user for use in the current authentication attempt. Authentication attempt information is determined that includes a number of authentication attempts by the user, and used in a hash operation with the verified static user key to generate a first user authentication key. A second user authentication key is retrieved from the public ledger that was sent from the first current authentication public ledger address to the second current authentication public ledger address in a transaction, and the user is authenticated if the second user authentication key matches the first user authentication key.

Abstract: Systems and methods for public ledger authentication include receiving a first previous authentication public ledger address and a first current authentication public ledger address from a user. A verified static user key is identified in a public ledger using the first previous authentication public ledger address. A second current authentication public ledger address is then provided to the user for use in the current authentication attempt. Authentication attempt information is determined that includes a number of authentication attempts by the user, and used in a hash operation with the verified static user key to generate a first user authentication key. A second user authentication key is retrieved from the public ledger that was sent from the first current authentication public ledger address to the second current authentication public ledger address in a transaction, and the user is authenticated if the second user authentication key matches the first user authentication key.

Abstract: Systems and methods for public ledger authentication includes receiving a first previous authentication public ledger address and a first current authentication public ledger address from a user. A verified static user key is identified in a public ledger using the first previous authentication public ledger address. A second current authentication public ledger address is then provided to the user for use in the current authentication attempt. Authentication attempt information is determined that includes a number of authentication attempts by the user, and used in a hash operation with the verified static user key to generate a first user authentication key. A second user authentication key is retrieved from the public ledger that was sent from the first current authentication public ledger address to the second current authentication public ledger address in a transaction, and the user is authenticated if the second user authentication key matches the first user authentication key.