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Season 1 · DeFi & Open Finance
OPN Hello World
A simple smart contract deployed on OPN Chain Testnet.
Stage 1, ReviewDeFi & Open Finance
by affra. · submitted Jun 2, 2026
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Overall score
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Weighted average across the 5 judging criteria.
Description
01/03
What the builder said.
Written by the team, rendered as the markdown they typed in the submission wizard.
I built a simple smart contract on OPN Chain Testnet to learn contract deployment and blockchain development fundamentals.
Roadmap
02/03
What ships next.
The builder's own next-quarter plan. Use it to gauge follow-through and ambition.
Deploy and verify the smart contract. Publish the source code on GitHub.
On-chain proof
03/03
1 contract on OPN Chain.
The chain itself confirmed every deployment is valid, signed by the builder's wallet, and inside the season's window.