{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11481518","patent":{"patent_number":"US-11481518","title":"Blockchain-based method for registration and verification of a file","assignee":null,"inventors":[],"filing_date":"2017-12-14T00:00:00.000Z","publication_date":"2022-10-25T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":15,"abstract":"The present invention relates to a computer-implemented method for the signed registration of a file, preferably a PDF-based document, by a user in a blockchain, said method comprising the steps of: (a) receiving said file from said user; (b) processing said file and calculating a hash for said file, said step (b) comprising the sub-steps (b.i) processing said file by creating and/or revising a file identifier comprised in said file so that it is unique with respect to the blockchain, obtaining a uniquely identified file; (b.ii) calculating the hash of said uniquely identified file comprising said file identifier with a cryptographic hash function; (b.iii) optionally, determining if the hash obtained in step (b.ii) is unique with respect to the blockchain and if so, ending step (b); if not, resuming from step (b.i); (c) establishing a file reference taking into account said hash; and (d) registering said file reference in the blockchain."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Blockchain-based method for registration and verification of a file","description":"The present invention relates to a computer-implemented method for the signed registration of a file, preferably a PDF-based document, by a user in a blockchain, said method comprising the steps of: (","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11481518","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11481518","citation_suggestion":"Patentable. \"Blockchain-based method for registration and verification of a file\" (US-11481518). https://patentable.app/patents/US-11481518","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11481518","json":"https://patentable.app/api/llm-context/US-11481518","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:32:02.984Z"}