PTB Ventures

Joust is a Texas-based company that operates a real-time social engagement platform, connecting users with their friends and interests through competitive challenges and predictions across various categories like sports, entertainment, and world events. Additionally, Joust offers a banking platform, Joust Inc., which provides merchant services and business banking, along with a proprietary invoice factoring service called PayArmour, to support the financial needs of self-employed individuals.

Learning Machine, established in 2017 and headquartered in New York, specializes in blockchain-based digital credentialing systems. It enables governments, companies, and educational institutions worldwide to create, issue, and manage secure, tamper-proof digital records using the Blockcerts open standard. The company's flagship product, the Learning Machine Federated Issuing System, facilitates large-scale issuance of blockchain records, empowering individuals with self-sovereign identity and streamlining processes like recruitment, enrollment, and credential verification. As of 2020, Learning Machine operates as a subsidiary of Hyland Software.

Element Inc. specializes in developing and distributing mobile-based platforms for biometric identity solutions. Founded in 2012 and headquartered in New York, the company focuses on enhancing digital identity access, particularly in regions like Asia and Africa where many individuals lack proper identification. Element's innovative approach leverages mobile deep learning technology to create efficient and inclusive systems. The company's offerings include the development of immunization platforms, connected diagnostics, digital identity services for healthcare providers, and access to financial services and digital payments. By collaborating with partners worldwide, Element aims to promote sustainable development and improve access to essential services for underserved populations.

Callsign Ltd. is a UK-based company that specializes in developing an advanced online transaction platform focused on digital trust. The company employs proprietary technology to replicate human methods of identification, achieving a remarkable 99.999% accuracy in recognizing genuine users. This high-fidelity AI-driven authentication system aims to deliver privacy and security while minimizing user friction and effectively blocking malicious actors. Callsign's technology is particularly beneficial for financial institutions, governments, and various commercial entities, providing them with secure and adaptive authentication services that address data breaches and cyber threats. Additionally, Callsign offers a mobile app designed to enhance user security when accessing websites and protecting personal information.

DISC Holdings Limited develops mobile blockchain-based payment applications aimed at facilitating fiat transactions for unbanked and underbanked individuals in the United Kingdom. Founded in 2015 and headquartered in Cobham, the company operates as a subsidiary of Rivetz Corp. DISC Holdings focuses on creating a secure platform that allows for the trusted exchange of data, which helps reduce costs and enhance security. This platform empowers users to maintain control over their transaction and identity information, addressing the needs of those often excluded from traditional banking services. The company was previously known as GovCoin Limited before rebranding in January 2017.