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Season 1 · DeFi & Open Finance

DeltaFi

A permissionless liquidity and yield layer for swapping, LP staking, native OPN liquidity, and delta-neutral vaults on OPN Chain.

WithdrawnDeFi & Open Finance

by anduong1995 · submitted Jul 18, 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

DeltaFi is a permissionless DeFi liquidity layer built and deployed on OPN Chain testnet.

The product brings together the core actions a user needs to enter and participate in on-chain markets:

  • Swap between supported assets through constant-product AMM pools
  • Add liquidity and receive LP positions
  • Stake LP tokens to earn OPND rewards
  • Wrap and unwrap native OPN through WOPN, enabling native-chain liquidity in ERC-20 compatible pools
  • Claim OPND through a batch airdrop flow
  • Explore an ERC-4626 DeltaVault architecture designed for future delta-neutral yield strategies

DeltaFi currently supports three live testnet markets: OPND/mUSD, WOPN/mUSD, and WOPN/OPND.

Why DeltaFi

New ecosystems need more than isolated tokens: they need usable liquidity, transparent incentives, and simple paths for users to put capital to work.

DeltaFi is designed as an open liquidity foundation for OPN Chain. It makes native OPN usable inside composable DeFi flows through WOPN, gives liquidity providers on-chain rewards through LP staking, and creates a clear upgrade path toward vault-based strategies.

Rather than presenting a static interface, DeltaFi ships end-to-end user flows that can be tested on-chain: approve, swap, provide liquidity, stake LP tokens, accrue rewards, claim rewards, and wrap or unwrap OPN.

How it works

  1. Users connect an EVM wallet configured for OPN Chain testnet.
  2. Users can wrap native OPN into WOPN, then swap assets through DeltaFi AMM pools.
  3. Liquidity providers deposit the two assets for a selected pair and receive LP tokens.
  4. LP tokens can be staked in the corresponding staking contract to accrue OPND rewards.
  5. Users can claim rewards on-chain whenever they have accrued OPND.
  6. The DeltaVault module uses an ERC-4626 vault interface and adapter boundary to support future integrations with OPN ecosystem liquidity and perpetual-market infrastructure.

Technical proof

All project contracts are deployed and verified on the IOPN testnet explorer, including tokens, AMM pools, LP staking contracts, WOPN, the ERC-4626 vault, and supporting adapters.

The repository includes contract tests, deployment manifests, verified contract addresses, and transaction evidence for the principal user flows. The public frontend reads live pool data from the OPN testnet RPC before a wallet is connected; a wallet is only needed when a user initiates an on-chain transaction.

Current status and roadmap

DeltaFi is a live testnet proof-of-concept, not a claim of production readiness. The current vault adapters are deliberately modular mock implementations that demonstrate the integration architecture.

Our next milestones are:

  • Replace mock vault adapters with direct OPN Swap and PerpDex integrations when production interfaces are available
  • Add improved routing, price-impact protection, and liquidity analytics
  • Extend incentivized pools and launch community liquidity campaigns
  • Progress through security review and external audit before mainnet deployment

Roadmap

02/03

What ships next.

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

Q3 2026 — Product validation and community foundation

  • Maintain the live OPN Chain testnet deployment and validate Swap, Add Liquidity, LP Staking, Reward Claim, Wrap/Unwrap OPN, and OPND airdrop flows with early users.
  • Grow the DeltaFi community through testnet quests, feedback campaigns, educational content, and transparent on-chain activity.
  • Finalize the initial OPND utility framework for liquidity incentives, community rewards, governance participation, and future ecosystem integrations.
  • Improve the frontend with transaction feedback, explorer links, pool analytics, portfolio views, price-impact warnings, and slippage controls.
  • Publish token, protocol, and risk documentation so users understand the purpose of OPND and the current testnet status.

Q4 2026 — OPND Token Generation Event preparation

  • Finalize OPND tokenomics, including total supply, allocation categories, vesting schedules, emissions, treasury policy, and community incentive design.
  • Complete legal, operational, and security-readiness work required before any public token event.
  • Run snapshot, eligibility, anti-sybil review, and distribution planning for testnet contributors, liquidity providers, early community members, and strategic ecosystem participants.
  • Prepare the Token Generation Event only after tokenomics, distribution controls, liquidity strategy, and security requirements are publicly documented.
  • Publish clear disclosures that explain token utility, risks, unlock schedules, and that participation is subject to applicable legal restrictions.

Q1 2027 — Mainnet launch and DEX liquidity

  • Progress from testnet toward a staged mainnet launch after internal review, stress testing, and independent smart-contract audit.
  • Execute the OPND Token Generation Event subject to completion of security, legal, operational, and market-readiness requirements.
  • Launch initial OPND liquidity on OPN-native DEX infrastructure and establish transparent liquidity pools against selected base assets.
  • Introduce liquidity mining and staking campaigns designed to reward sustainable liquidity rather than short-term mercenary capital.
  • Deploy governance and treasury-management foundations with transparent parameter controls and public reporting.
  • Begin direct integrations with OPN Swap, PerpDex, and other OPN ecosystem primitives where stable production interfaces are available.

Q2 2027 — Expansion, utility, and exchange-readiness

  • Expand OPND utility across DeltaFi, including LP rewards, staking incentives, governance participation, fee-related mechanisms where appropriate, and ecosystem partner campaigns.
  • Add new pools and improve routing, minimum-output protection, liquidity analytics, and risk controls.
  • Build public dashboards for TVL, trading volume, pool depth, reward emissions, treasury activity, and token unlock transparency.

On-chain proof

03/03

10 contracts on OPN Chain.

The chain itself confirmed every deployment is valid, signed by the builder's wallet, and inside the season's window.

  • 01LPStakingPrimary

    0x670DA68a3c95EcFe57a2ec322f3369AE9BAE7D4a

    tx 0x066597c5f5151a9da63a91473d3804360a3eaaf811718595e8ffca82b1ecc871

    deployed Jul 18, 2026 · block 20712801

  • 02LPStaking

    0xbd8877D6b15934e80baF53Bc4a275aF874573100

    tx 0xb5604fae28bf23eb495d1d1a1a5ecec4b074a047f878e0ad51be1a284373578b

    deployed Jul 18, 2026 · block 20712798

  • 03DeltaSwapPool

    0x5f33d045a697E690265A0662342A232851AfBcC8

    tx 0x68e79a7da78b04579f26017d882cdc44d0f835a817a947e0d380c7eecd34a1bd

    deployed Jul 18, 2026 · block 20712795

  • 04DeltaSwapPool

    0xc4A0b2637745bEE40FFDa0c4391a37B61ADce7a8

    tx 0x89c8c130add3dca99bb4d242b7c3a30891a0a239dc98ac3cc112497f9087022c

    deployed Jul 18, 2026 · block 20712793

  • 05WrappedOPN

    0x0Ad72269d024b7112644D366B73E5b4b1c2AD73f

    tx 0xe5ce33658c52c7b80d1cb12c27381fb753a0e34c7ad6793df53752c92f112ec9

    deployed Jul 18, 2026 · block 20712787

  • 06LPStaking

    0xA55852c8368Fda024dE29049999cc8565C19E622

    tx 0xe3e0b1bd0bb2baaaeb878da00bfd45996dd084613c83eafd6ecd34fd38819e09

    deployed Jul 18, 2026 · block 20700576

  • 07DeltaSwapPool

    0x83755a26029be625420027521FA1052c105A4F2F

    tx 0xa7050cabd197fd5bbb30d51448f15fbd0edc9416d64fdd7b9dacdee4822c79ae

    deployed Jul 18, 2026 · block 20700574

  • 08OPNDeltaToken

    0xcce744087C0120503884f20ce787135FFd1cFbA0

    tx 0x17b04f070c4c9c83b9456b998be808b0537b1a6160536bdc3bc1db90f83c32f2

    deployed Jul 18, 2026 · block 20700571

  • 09DeltaVault

    0x890137F62d5418e23CDE3c23329849d986F5c8FD

    tx 0x41d05fcdac6d5993359c7e711dfad1c344d0129ade190d9ccf91c4e92465bfff

    deployed Jul 18, 2026 · block 20700189

  • 10MockHedgeAdapter

    0xE82b9e4BB69470Dc77219366aFfc42d40293535c

    tx 0x8afa85f033b4dc81e2bf452a290dc83eaddd7e1f5d8f430e90d818448d691004

    deployed Jul 18, 2026 · block 20700186