Lùkas K.

ETHGlobal 2026 Cannes - Hackathon - 2nd Prize of Ledger with the project Oryn which consists of on-chain password manager.

Oryn is a hardware-secured, on-chain password manager built on Base. It transforms a Ledger device into a physical access key for a personal password vault: without the device, access is impossible.

Oryn encrypts user credentials locally and stores only encrypted blobs on-chain. The encryption keys are never stored or exposed—they are deterministically derived from Ledger signatures, meaning they can only be recreated when the user physically approves a request on their device.

In essence, Oryn replaces traditional password managers with a system where security depends entirely on cryptography and physical ownership.

ETHOnline 2025 Hackathon - 1st Prize of Hardhat withe the project Vigil3 which consists of scans smart contracts for vulnerabilities using AI and Slither, right in VS Code.

Vigil3 is built around two complementary components — a Hardhat plugin and a network of three AI security agents, unified through a VS Code extension. The Hardhat plugin, developed in TypeScript, integrates Slither’s static analysis directly into the smart contract development pipeline, automatically scanning Solidity code for vulnerabilities before deployment. The AI agents, powered by Agentverse and the Artificial Superintelligence Alliance (ASI), enhance this process through intelligent reasoning. A communication agent manages interactions between the user and the AI network, a Solidity-specialized reasoning agent uses MeTTa rules and Slither knowledge to interpret and explain issues, and a local VS Code agent bridges the extension to the agent network for real-time feedback. The VS Code extension brings everything together, offering an intuitive interface where developers can scan, understand, and fix vulnerabilities directly within their workspace. With Vigil3, advanced smart contract security becomes effortless, intelligent, and accessible to every developer.

Blockchain Research & Development:

Setup blockchain architecture (private and public)

Custom cryptographic system for managing document sharing and access rights through blockchain and IPFS.

Development of API between blockchain and the organization's central API.