OPN Stream
Yield-bearing treasury streams, permissionless swaps, liquidity and staking infrastructure on OPN Chain.
by trangnguyenlo · 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
OPN Stream is programmable treasury infrastructure for OPN Chain. It combines yield-bearing treasury streams, permissionless swaps, native OPN liquidity, LP staking, and token distribution in one non-custodial application.
Sponsors can allocate capital to contributors, grants, and ecosystem programmes through transparent on-chain schedules instead of spreadsheets, custodial wallets, and manual transfers.
- Live app: https://opn-stream-dex.vercel.app
- Source: https://github.com/anle3341/opn-stream-DEX
Why
Grant and treasury payments are fragmented. Contributors cannot easily verify what was funded, what has vested, or whether idle capital generated value. OPN Stream replaces this manual intermediary layer with contracts that make funding, release conditions, yield, liquidity, and incentives independently verifiable.
How it works
1. Programmable treasury streams
A sponsor chooses a beneficiary, asset, schedule, yield split, and metadata commitment. The factory creates a minimal-proxy vault and deposits principal into an ERC-4626 strategy. Linear streams unlock continuously; milestone streams unlock only after approval. Principal and yield are tracked separately.
2. Permissionless markets
The DEX uses a constant-product AMM with a 0.30% LP fee. Users can swap, add or remove liquidity, and protect transactions with deadlines and minimum outputs. WOPN enables native OPN routing.
Live markets:
- OPNS / OPN
- opnUSD / OPN
- OPNS / opnUSD
3. Incentives and distribution
LP tokens represent pool ownership and can be staked for OPNS rewards. Merkle proofs support scalable, one-time community airdrop claims without a centralized distributor.
Contract flow
Sponsor -> StreamingVaultFactory -> StreamingVault -> ERC-4626 Strategy
Trader -> StreamDexRouter -> StreamSwapPool -> OPNS / opnUSD / WOPN
LP -> LP Token -> StreamStaking -> OPNS rewards
User -> Merkle proof -> StreamAirdrop -> OPNS claim
Technical execution
The system is live on OPN Testnet, chain ID 984. All 14 deployed contracts, including three factory-created liquidity pairs, are source-verified on the explorer.
Key safeguards and primitives:
- Solidity 0.8.28 and OpenZeppelin libraries
- Safe ERC-20 transfers and reentrancy protection
- ERC-4626 strategy integration and minimal proxies
- Slippage, minimum-output, and deadline checks
- Constant-product pricing and Merkle-proof claims
The automated suite covers vault creation, linear vesting, milestone approvals, yield accounting, AMM liquidity and swaps, staking rewards, and airdrop claims. All 10 tests pass; Solidity compilation, TypeScript checking, and the production build also pass.
Innovation and viability
Most streaming protocols only schedule payments, while most DEX products only manage trading. OPN Stream links programmable treasury capital with yield, liquidity, incentives, and distribution. This creates an open financial lifecycle for ecosystem grants, contributor payroll, accelerator funding, protocol treasuries, and milestone-based investment.
The next phase is to integrate production yield strategies, add governance-controlled market listings, commission an independent security audit, and onboard OPN ecosystem teams as initial treasury users.
This is a testnet submission and has not received an independent security audit.
Roadmap
02/03
What ships next.
The builder's own next-quarter plan. Use it to gauge follow-through and ambition.
Q3 2026 - Testnet launch and builder validation
- Public OPN Testnet deployment of the treasury-stream protocol, OPNS token, Merkle airdrop, AMM, WOPN routing, LP staking, and three liquidity markets.
- Source verification for all deployed contracts and a public demo at the Vercel URL.
- Improve wallet flows, add analytics, and publish integration documentation.
- Run an expanded testnet campaign with contributors, grant programmes, and liquidity providers.
Q4 2026 - Mainnet readiness and first DEX liquidity
- Complete an independent security review and address all high-priority findings before mainnet deployment.
- Launch the audited core contracts on OPN Mainnet, subject to network readiness and ecosystem approval.
- Target: December 2026 - DEX liquidity launch. Open OPNS/OPN and OPNS/opnUSD liquidity on the OPN-native DEX immediately after mainnet deployment, with initial liquidity controls and transparent treasury parameters.
- Add governance-controlled market listings, protocol fee reporting, emergency pause procedures, and production monitoring.
- Onboard the first ecosystem grant, contributor payroll, or accelerator stream using the mainnet vault system.
Q1 2027 - Token generation event and ecosystem expansion
- Target: February 2027 - OPNS TGE. Activate the OPNS token generation event after the mainnet contracts, token allocation, vesting schedules, liquidity plan, and compliance review are finalized.
- Publish the final token allocation and unlock schedule, with team and contributor allocations subject to long-term vesting.
- Distribute the community allocation through the audited Merkle-claim flow and launch OPNS staking incentives tied to real liquidity and protocol usage.
- Expand the DEX to additional approved OPN ecosystem assets and integrate partner yield strategies.
Q2 2027 - CEX access and institutional rails
- Target: May-June 2027 - first CEX listing. Begin centralized-exchange listings only after the TGE, sufficient circulating liquidity, market-maker readiness, legal review, and exchange due diligence. The specific venue will depend on partner approval and market conditions.
- Connect CEX liquidity with the OPN-native DEX while keeping treasury streams and settlement non-custodial on-chain.
- Introduce institutional dashboards, role-based treasury permissions, reporting exports, and API access for ecosystem operators.
Beyond 2027 - Open treasury network
- Scale OPN Stream into a shared treasury layer for grants, payroll, accelerator programmes, and milestone-based capital allocation.
- Add cross-chain settlement only after the OPN-native system is stable and audited.
- Establish community governance for market listings, incentive budgets, and protocol upgrades.
All dates are target windows, not guaranteed launch promises. Mainnet, TGE, and CEX milestones depend on audit results, OPN network readiness, regulatory requirements, liquidity conditions, and partner approvals.
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.