TOPASS tokens offer a distinctive safeguard against counterfeit goods by ensuring single-package accuracy. Upon purchase, consumers can immediately verify the authenticity of the product, thanks to the security provided by TOPASS tokens. Unlike hologram security features that are susceptible to counterfeiting, TOPASS tokens effectively prevent the replication and multiplication of security measures on fraudulent products. Alongside these benefits, the website presents numerous other applications for TOPASS tokens. The TOPASS smart contract operates on a public blockchain platform and specifically utilizes the efficient L2 Polygon platform, ensuring outstanding performance and minimal transaction fees. If desired, our smart contract can be deployed on an alternative Ethereum-compatible platform upon request. In my role, I successfully introduced and customized NFT tokens to meet specific client requirements. Furthermore, I developed a middleware server using Node.js and Express.js, thereby implementing a REST API that enabled seamless integration of the client systems with the tokens.

The S3DOC information system represents a cutting-edge, next-generation durable medium incorporating a digital signature (eIDAS) known as softWORM. Our commitment to ensuring durability is rooted in the utilization of top-tier algorithms and cryptographic methods adhering to global best practices and standards. S3DOC stands as an avant-garde EU-wide information system that possesses the attributes of a robust, enduring medium. My involvement entailed designing and developing the S3DOC durable medium using Ethereum and IPFS as the foundational framework. I created intricate smart contracts, including modules for data storage, user management (registration, personal data, authentication), and document management (registration, metadata). I constructed decentralized software that securely stores documents on IPFS and their corresponding metadata on Ethereum. In the system's second iteration, I seamlessly migrated all software components to a novel blockchain platform built on Node.js, resulting in vastly enhanced performance and security compared to Ethereum and IPFS.

I spearheaded the creation of a cutting-edge, proprietary blockchain platform tailored for the specific needs of enterprise corporations. This platform boasts top-tier security measures and exceptional performance capabilities. It excels at storing vast amounts of data, executing smart contracts, establishing robust performance and reliability clusters, and employing zero-knowledge-proof procedures to safeguard information. Written in JavaScript and optimized for the Node.js environment, this platform embodies a modular design approach where each module assumes responsibility for its respective technological features. Noting the deficiencies of the Ethereum platform in addressing the demands of enterprise applications, I advocated for the development of a novel blockchain platform from the ground up, addressing the exacting performance and security requirements set by major financial institutions. I personally conceptualized the architecture and engineered the core modules of this extraordinary platform.

PENNYCUT operates as an avant-garde micropayment platform that leverages pay-per-content billing, providing users with the ability to establish prepaid accounts and acquire tokens for seamless access to an array of digital content including portals, newspaper articles, movies, and blogs. This cutting-edge platform operates on an efficient blockchain infrastructure.".

The Unit-test-script-generator is a proficient tool designed to enable developers in expeditiously creating unit test scripts for seamless integration with well-established frameworks like Jest and Mocha. This comprehensive package is readily accessible on the esteemed npm platform and is meticulously developed using Node.js and JavaScript, ensuring optimal compatibility. Moreover, it serves as a reliable means for testing smart contracts.

Developing software for the blockchain platform typically entails the implementation of a smart contract accompanied by a back-end program for seamless interaction. This comprehensive package facilitates API library generation based on the user's ABI configuration for the smart contract. Once invoked, users will obtain a fully functional library to effortlessly interact with all the functionalities embedded within the smart contract. The generator, crafted in TypeScript, is readily accessible in the npm repository.

This is a mobile application specifically designed for S3DOC users. With this app, users can conveniently access and view documents stored on long-lasting media and easily review the event history. Notably, the application effectively utilizes push notifications to promptly inform users about new documents, and it also facilitates biometric login for a seamless user experience. Compatibility-wise, it is built to operate smoothly on both Android and iOS platforms. Renderers are ingeniously employed to ensure optimal performance and compatibility with the distinctive features of each operating system. Moreover, robust security measures are implemented, and the application seamlessly integrates with a secure REST API.

This application facilitates access to the Intrack system data by leveraging an advanced user interface and an array of visually appealing charts. A dedicated .NET library has been developed exclusively for this project to enable the creation of animated charts. It is functional on both Android and iOS platforms, employing renderers to seamlessly accommodate the distinctive characteristics of each operating system. Furthermore, the application seamlessly integrates with a secure REST API to ensure robust data protection.