Hackathons & Awards

Side projects and competition work, kept separate from the production protocol work in Projects. The 2022-2024 projects are public on Devpost, and the full hackathon and grant history is on the DoraHacks profile. The 2026 submissions below are live and linked to their own pages.

2026

• Portcullis (ETHOnline 2026) — a guard for inbound cross-chain settlements. A settlement adapter asks PortcullisGuard to inspect every message before a token moves, checking freshness, enrolled source and signing authority, allowed token and recipient, value bounds, nonce order and replay. Optional token-bucket rate limit, per-source volume threshold and Chainlink CRE policy verdicts; an authenticated anomaly latches a circuit breaker until a guardian clears it. Source identities resolve through ENS and fail closed. Dashboard and subgraph on the Sepolia deployment. Testnet software, not audited. Docs.
• EnergyProof (BUIDL CTC 2026 Fall, “BUIDL For The Real World” by Creditcoin and Credit Labs, DePIN track) — cross-chain energy settlement. A meter reading recorded on Ethereum Sepolia is verified on Creditcoin through the Attestcoin protocol (attestation quorum, then a Merkle and continuity proof) before exactly one energy credit is recorded for the producer. No ledger state changes before the proof verifies, and a replayed or invalid proof credits nothing. Protocol docs.

Grants and live deployment

• DefiEnergySupply (applied to the Binance Ukraine grant and to Arc Microgrants by Circle on DoraHacks) — the microgrid settlement system from Projects, first applied to the Binance Ukraine grant with the Base Sepolia build, then deployed on Arc mainnet where USDC is the native gas token. The oracle sets prices from power quality (voltage THD and power factor), and an escrow pays suppliers in native USDC. The dashboard reads contract events directly from the chain. Source.

2022-2024

• Hata — real estate agreements and on-chain payments, launched at the Chainlink hackathon (November 2023). Co-founded, designed the architecture end-to-end, owned the contracts and the subgraph. Selected into the Vacuum Deep Tech Acceleration program, Science Intensive Innovation track (March 2024).
• BuggyDAO — gamified bug-bounty DAO. 2nd place, Kyiv Tech Summit (September 2022).
• AragonDAO — DAO tooling and governance on Aragon. Aragon bounty winner, Kyiv Tech Summit (September 2022).
• Police Oracle — mixer-detection and ZKP notifications. Aragon bounty winner, Kyiv Tech Summit (September 2022).