# US 10,789,345 B1 · Creating a secure digital identity > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,789,345 B1 - Document ID: US10789345B1 - Status: Granted - Kind: B1 - Application number: 16/389,878 - Filed: 2019-04-19 - Granted: 2020-09-29 - Earliest claimed: 2018-12-11 - Assignees: block.one - Applicants: block.one - Inventors: Daniel J. Larimer; Richard B. Whitner; Thomas C. Hallgren; Todd B. Fleming - Web page: https://patentgrep.com/patent/US10789345B1 ## CPC - G06F 21/32: using biometric data, e.g. fingerprints, iris scans or voiceprints - G06F 16/182: Distributed file systems - G06F 16/5854: {using shape and object relationship} - G06F 21/44: Program or device authentication - G06F 21/64: Protecting data integrity, e.g. using checksums, certificates or signatures - H04L 9/0897: {involving additional devices, e.g. trusted platform module [TPM], smartcard or USB} - H04L 9/3231: {Biological data, e.g. fingerprint, voice or retina (network architectures or network communication protocols for supporting authentication of entities using biometrical features in a packet data network H04L63/0861)} - H04L 9/3236: {using cryptographic hash functions} - H04L 9/3239: {involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD} - H04L 9/3247: {involving digital signatures} - H04L 9/3297: {involving time stamps, e.g. generation of time stamps} - H04L 63/083: {using passwords (cryptographic mechanisms or cryptographic arrangements for entity authentication using a predetermined code H04L9/3226)} - H04L 63/0861: {using biometrical features, e.g. fingerprint, retina-scan (cryptographic mechanisms or cryptographic arrangements for entity authentication using biological data H04L9/3231)} - H04L 63/0876: {based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint} - H04L 63/102: {Entity profiles} - G06F 2221/2101: Auditing as a secondary aspect - H04L 9/50: {using hash chains, e.g. blockchains or hash trees} - H04W 12/63: Location-dependent; Proximity-dependent - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Methods and systems for creating a verifiable digital identity are provided. The method includes obtaining a first user-generated item comprising an identifiable feature. The method also includes digitally signing the first user-generated item to generate a secure digital artifact. The method also includes uploading the secure digital artifact and the first user-generated item to an auditable chain of a public ledger. The method also includes verifying a digital identity of the user by auditing the auditable chain. The method also includes obtaining a second user-generated item generated comprising the identifiable feature. The method also includes comparing the first and second user-generated items. The method also includes uploading the second user-generated item to the public ledger when the comparing is within a threshold. ## Claims ### Claim 1 A computer-implemented method for creating a verifiable digital identity, comprising: obtaining a first user-generated item generated through a device, the first user-generated item comprising an identifiable feature of a user; digitally signing the first user-generated item with the device to generate a secure digital artifact; uploading the secure digital artifact and the first user-generated item to an auditable chain of a public ledger, the public ledger comprising a database; verifying a digital identity of the user by auditing the auditable chain; obtaining a second user-generated item generated through the device, the second user-generated item comprising the identifiable feature of the user; comparing the identifiable feature of the user from the first user-generated item and the second user-generated item; and uploading the second user-generated item to the public ledger when the comparing is within a threshold, the second user-generated item hashed with the first user-generated item to create a link in the auditable chain. ### Claim 2 (depends on 1) The computer-implemented method of claim 1, wherein verifying the device comprises: establishing a form of authentication for the device, the form of authentication comprising at least one of a password, an audio signature, or a biometric input, the biometric input comprising a fingerprint or facial recognition. ### Claim 3 (depends on 1) The computer-implemented method of claim 1, further comprising: obtaining sensor data associated with the first user-generated item. ### Claim 4 (depends on 1) The computer-implemented method of claim 1, further comprising: obtaining a multi-user generated item generated through the device, the multi-user generated item comprising identifiable features of at least two users. ### Claim 5 (depends on 1) The computer-implemented method of claim 1, further comprising: certifying a transaction upon verification of the digital identity. ### Claim 6 A system for creating a verifiable digital identity, comprising: a memory storing sequences of instructions; and a processor configured to execute the sequences of instructions which, when executed, causes the processor to perform: obtaining a first user-generated item generated through a device, the first user-generated item comprising an identifiable feature of a user; digitally signing the first user-generated item with the device to generate a secure digital artifact; uploading the secure digital artifact and the first user-generated item to an auditable chain of a public ledger, the public ledger comprising a database; and verifying a digital identity of the user by auditing the auditable chain; obtaining a second user-generated item generated through the device, the second user-generated item comprising the identifiable feature of the user; comparing the identifiable feature of the user from the first user-generated item and the second user-generated item; and uploading the second user-generated item to the public ledger when the comparing is within a threshold, the second user-generated item hashed with the first user-generated item to create a link in the auditable chain. ### Claim 7 (depends on 6) The system of claim 6, wherein verifying the device comprises: establishing a form of authentication for the device, the form of authentication comprising at least one of a password, an audio signature, or a biometric input, the biometric input comprising a fingerprint or facial recognition. ### Claim 8 (depends on 6) The system of claim 6, further comprising stored sequences of instructions, which when executed by the processor, cause the processor to perform: obtaining sensor data associated with the first user-generated item. ### Claim 9 (depends on 6) The system of claim 6, further comprising: obtaining a multi-user generated item generated through the device, the multi-user generated item comprising identifiable features of at least two users. ### Claim 10 (depends on 6) The system of claim 6, further comprising stored sequences of instructions, which when executed by the processor, cause the processor to perform: certifying a transaction upon verification of the digital identity. ### Claim 11 A non-transitory computer-readable storage medium is provided including instructions that, when executed by a processor, cause the processor to perform a method for creating a verifiable digital identity, the method comprising: obtaining a first user-generated item generated through a device, the first user-generated item comprising an identifiable feature of a user; digitally signing the first user-generated item with the device to generate a secure digital artifact; uploading the secure digital artifact and the first user-generated item to an auditable chain of a public ledger, the public ledger comprising a database; verifying a digital identity of the user by auditing the auditable chain; obtaining a second user-generated item generated through the device, the second user-generated item comprising the identifiable feature of the user; comparing the identifiable feature of the user from the first user-generated item and the second user-generated item; and uploading the second user-generated item to the public ledger when the comparing is within a threshold, the second user-generated item hashed with the first user-generated item to create a link in the auditable chain. ### Claim 12 (depends on 11) The non-transitory computer-readable storage medium of claim 11, wherein the method comprises: establishing a form of authentication for the device, the form of authentication comprising at least one of a password, an audio signature, or a biometric input, the biometric input comprising a fingerprint or facial recognition. ### Claim 13 (depends on 11) The non-transitory computer-readable storage medium of claim 11, wherein the method further comprises: obtaining sensor data associated with the first user-generated item.