OPN Lending
Decentralized lending and borrowing protocol with variable interest rates on OPN Chain
by bosskuh · submitted May 29, 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 we built
OPN Lending is a permissionless lending and borrowing protocol deployed on OPN Chain Testnet. Users can supply assets to earn interest, borrow against their collateral, and participate in liquidations. The protocol features a kinked interest rate model (similar to Compound/Aave) that dynamically adjusts rates based on utilization, plus a multi-asset price oracle and overcollateralized borrowing with health factor monitoring.
Why
OPN Chain currently lacks native DeFi lending infrastructure. Every L1 needs a money market to unlock capital efficiency — letting idle assets generate yield while enabling leveraged positions. OPN Lending fills this gap as a foundational DeFi primitive that other protocols can build on top of.
How it works
- Users deposit supported assets (USDC, WETH, wOPN) into isolated lending markets and receive oTokens representing their share
- Deposited assets serve as collateral, enabling users to borrow other assets up to their collateral factor limit
- Interest rates follow a kinked curve: low rates below 80% utilization, steep rates above to incentivize repayment
- A health factor system tracks each position — if it drops below 1.0, liquidators can repay part of the debt and seize collateral at a bonus
- The protocol accrues interest per-block, with a reserve factor directing a portion to protocol reserves
Architecture
- LendingPool — core contract handling deposits, withdrawals, borrows, repayments, and liquidations
- InterestRateModel — kinked rate curve with configurable base rate, multiplier, and jump multiplier
- PriceOracle — owner-updatable price feed for all supported assets
- OToken — ERC20 receipt tokens minted on deposit, burned on withdrawal
Links
Roadmap
02/03
What ships next.
The builder's own next-quarter plan. Use it to gauge follow-through and ambition.
Phase 1 — Live Now (Q2 2025)
- Core protocol deployed on OPN Testnet (LendingPool, Oracle, InterestRateModel)
- 3 markets active: USDC, WETH, wOPN
- Frontend demo live with wallet connect
- Full test suite passing (7/7)
Phase 2 — Q3 2025
- Deploy to OPN Mainnet after audit
- Integrate Chainlink or Pyth oracle for live price feeds
- Add governance token (oGOV) for protocol parameter voting
- Implement flash loans
- Launch referral program with fee sharing
Phase 3 — Q4 2025
- Cross-chain lending via OPN bridge (deposit on Base, borrow on OPN)
- Isolated risk markets for long-tail assets
- Liquidation bot SDK for community liquidators
- Mobile-optimized frontend
Beyond
- Interest rate strategy marketplace (custom curves per market)
- Credit delegation (undercollateralized lending with trusted counterparties)
- Protocol-to-protocol integrations (yield aggregators, leveraged vaults)
- DAO transition with full on-chain governance
On-chain proof
03/03
6 contracts on OPN Chain.
The chain itself confirmed every deployment is valid, signed by the builder's wallet, and inside the season's window.