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Season 1 · DeFi & Open Finance

OPN Save

A DeFi savings protocol on OPN Chain where users deposit OPN tokens and earn 10% yearly interest.

Stage 1, ReviewDeFi & Open Finance

by kaykaypoops · submitted Jun 3, 2026

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Description

01/03

What the builder said.

Written by the team, rendered as the markdown they typed in the submission wizard.

What is OPN Save? OPN Save is a decentralized savings protocol built natively on OPN Chain. Users deposit OPN tokens into a smart contract vault and automatically earn 10% yearly interest — no banks, no middlemen, just code.

Why We Built It Traditional savings accounts are gatekept by banks that decide who qualifies, charge hidden fees, and offer near-zero returns. OPN Save removes every intermediary. The OPN Chain smart contract handles deposits, interest calculation, and withdrawals automatically and transparently.

What It Does Deposit — Send OPN tokens into the vault and start earning interest instantly Flexible Withdrawals — Choose exactly how much to take out: 5%, 10%, 25%, 50%, 75%, or 100% Interest — 10% APY calculated on-chain in real time, every second Savers Badge System — 6-tier badge system (Iron, Copper, Bronze, Silver, Gold, Diamond) rewarding long-term savers based on amount saved and duration OPN Activity Hub — Any wallet address can check their OPN Chain score, transaction history, balance, and contributor level

Why OPN Chain? OPN Chain's infrastructure is the load-bearing layer of this protocol. The smart contract is deployed directly on OPN Chain, all transactions are verified on-chain, and the Savers Badge system is designed to integrate with OPN Chain's identity layer as the ecosystem grows.

Smart Contract Deployed on OPN Chain Testnet Address: 0xB707410Df98EB444735eD0533C8ee0022715CE61 Fully open source

Roadmap

02/03

What ships next.

The builder's own next-quarter plan. Use it to gauge follow-through and ambition.

Phase 1 — Current (Q2 2026)

✅ Smart contract deployed on OPN Chain Testnet ✅ Deposit and flexible withdrawal system (5% to 100%) ✅ 10% APY interest calculated on-chain in real time ✅ 6-tier Savers Badge system (Iron to Diamond) ✅ OPN Activity Hub for wallet score and history lookup ✅ Live frontend deployed on Vercel

Phase 2 — Mainnet Launch (Q3 2026)

Deploy contract to OPN Chain Mainnet Security audit of smart contract Native OPN token rewards on top of base interest Mobile-optimized responsive interface Multi-language support for global users

Phase 3 — Identity Integration (Q4 2026)

Integrate OPN Chain Neo ID soulbound NFTs Savers Badge minted as on-chain credentials tied to wallet Undercollateralized loans for verified long-term savers Reputation-based interest rate boosts for Diamond and Gold savers

Phase 4 — Ecosystem Expansion (Q1 2027)

Multi-asset vault support beyond OPN token DAO governance — savers vote on interest rates OPN Save leaderboard powered by OPN Chain data Partnerships with other OPN Chain protocols for yield strategies SDK for other developers to build on top of OPN Save

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.

  • 010xB707410Df98EB444735eD0533C8ee0022715CE61Primary

    0xB707410Df98EB444735eD0533C8ee0022715CE61

    tx 0xb05a9b1b9d4ef3e7f131fd77e3c7a28c06310a1ca20f5303e70bc0e92f4e93b2

    deployed Jun 3, 2026 · block 17826687