BLOCKSTAMP Trademark

Trademark Overview

On Wednesday, November 5, 2025, a trademark application was filed for BLOCKSTAMP with the United States Patent and Trademark Office. The USPTO has given the BLOCKSTAMP trademark a serial number of 99481694. The federal status of this trademark filing is APPROVED FOR PUBLICATION as of Thursday, March 19, 2026. This trademark is owned by SIMPLE PROOF INC.. The BLOCKSTAMP trademark is filed in the Computer & Software Products & Electrical & Scientific Products, Computer & Software Services & Scientific Services, Personal, and Legal & Social Services categories with the following description:

software as a service (SaaS) featuring software for cryptographic hashing, timestamping, and verification of electronic documents using blockchain technology; platform as a service (PaaS) featuring computer software platforms for integrating document timestamping and verification with enterprise document management systems and cloud-based platforms; providing temporary use of non-downloadable software for verifying the integrity and authenticity of digital files and for generating and sharing verification proofs; cloud computing featuring software for anchoring document hashes to a blockchain and for accessing blockchain transaction data related to timestamp proofs; application service provider (ASP) services featuring application programming interfaces (APIs) for connecting document repositories, email systems, and cloud storage to a timestamping and verification service; technical support services, namely, troubleshooting of computer software problems relating to blockchain-based tim...

downloadable computer software for cryptographic hashing, timestamping, and verification of electronic files using blockchain technology; downloadable application programming interface (API) software and software development kits (SDKs) for integrating blockchain-based timestamping and verification into third-party software; downloadable computer software for generating, storing, and sharing verification links for electronic documents; downloadable computer software for accessing blockchain explorers to view timestamp proofs; downloadable computer software for synchronizing or replicating cloud storage buckets to a document timestamping service

electronic document authentication services using blockchain technology; user authentication services using blockchain technology for verifying the integrity and authenticity of electronic documents
blockstamp

General Information

Serial Number99481694
Word MarkBLOCKSTAMP
Filing DateWednesday, November 5, 2025
Status680 - APPROVED FOR PUBLICATION
Status DateThursday, March 19, 2026
Registration Number0000000
Registration DateNOT AVAILABLE
Mark Drawing4 - Illustration: Drawing with word(s) / letter(s) / number(s) in Block form
Published for Opposition DateNOT AVAILABLE

Trademark Statements

Goods and Servicessoftware as a service (SaaS) featuring software for cryptographic hashing, timestamping, and verification of electronic documents using blockchain technology; platform as a service (PaaS) featuring computer software platforms for integrating document timestamping and verification with enterprise document management systems and cloud-based platforms; providing temporary use of non-downloadable software for verifying the integrity and authenticity of digital files and for generating and sharing verification proofs; cloud computing featuring software for anchoring document hashes to a blockchain and for accessing blockchain transaction data related to timestamp proofs; application service provider (ASP) services featuring application programming interfaces (APIs) for connecting document repositories, email systems, and cloud storage to a timestamping and verification service; technical support services, namely, troubleshooting of computer software problems relating to blockchain-based timestamping and verification; computer consulting in the field of blockchain technology, data integrity, and compliance as it relates to electronic document workflows
Pseudo MarkBLOCK STAMP
Goods and Servicesdownloadable computer software for cryptographic hashing, timestamping, and verification of electronic files using blockchain technology; downloadable application programming interface (API) software and software development kits (SDKs) for integrating blockchain-based timestamping and verification into third-party software; downloadable computer software for generating, storing, and sharing verification links for electronic documents; downloadable computer software for accessing blockchain explorers to view timestamp proofs; downloadable computer software for synchronizing or replicating cloud storage buckets to a document timestamping service
Goods and Serviceselectronic document authentication services using blockchain technology; user authentication services using blockchain technology for verifying the integrity and authenticity of electronic documents

Classification Information

International Class009 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire extinguishing apparatus.
US Class Codes021, 023, 026, 036, 038
Class Status Code6 - Active
Class Status DateWednesday, November 5, 2025
Primary Code009
First Use Anywhere DateNOT AVAILABLE
First Use In Commerce DateNOT AVAILABLE
International Class042 - Scientific and technological services and research and design relating thereto; industrial analysis and research services; design and development of computer hardware and software.
US Class Codes100, 101
Class Status Code6 - Active
Class Status DateWednesday, November 5, 2025
Primary Code042
First Use Anywhere DateNOT AVAILABLE
First Use In Commerce DateNOT AVAILABLE
International Class045 - Legal services; security services for the protection of property and individuals; personal and social services rendered by others to meet the needs of individuals.
US Class Codes100, 101
Class Status Code6 - Active
Class Status DateWednesday, November 5, 2025
Primary Code045
First Use Anywhere DateNOT AVAILABLE
First Use In Commerce DateNOT AVAILABLE

Trademark Owner History

Party NameSIMPLE PROOF INC.
Party Type10 - Original Applicant
Legal Entity Type03 - Corporation
AddressRoswell, GA 30076
US

Trademark Events

Event DateEvent Description
Wednesday, November 5, 2025NEW APPLICATION ENTERED
Wednesday, November 5, 2025APPLICATION FILING RECEIPT MAILED
Friday, November 7, 2025NEW APPLICATION OFFICE SUPPLIED DATA ENTERED
Wednesday, March 18, 2026ASSIGNED TO EXAMINER
Thursday, March 19, 2026APPROVED FOR PUB - PRINCIPAL REGISTER

Related Keywords

blockstamp software blockchain verification document timestamping computer downloadable service electronic services