All deployed and verified smart contracts for the FLAT Protocol on Ethereum Sepolia.
FLAT is a CPI-indexed stable currency protocol with a mathematically-driven deflationary mechanism. The protocol consists of 10 contracts across 4 functional groups, all verified on-chain.
| Contract | Address | Tier | Etherscan |
|---|---|---|---|
| FLAT | 0x6AD27352CEb1B55A1Cbf885cEfC2Ed5A9183aE99 |
Tier 1 — Fully Immutable | View |
| CPIOracle v4 | 0x6C7B097af674F8e2daaeADcE05Eb7725083ecF7a |
Tier 2 — Owner-Controlled Oracle | View |
| FlatSale v3 | 0x01ddC49b9C366D5c40C57d002BA08fD0eA669189 |
Tier 3 — Guardian-Protected | View |
| RISE | 0xc1E141863414f434E46162A1184345E45CF5a14A |
Tier 1 — Fully Immutable | View |
| SAVE (Vault) | 0x9f0DD6e940478293964aE778e4C720B720cf9cAe |
Tier 1 — Fully Immutable | View |
| SAVESale v3 | 0x1735e5a74E4f948E16e987D4C8Ba2a8DE05Cd3CB |
Tier 3 — Guardian-Protected | View |
| FlatArbitrage | 0x20eB6397f14D7dBbF2467B1d3f446caA7803b73C |
Tier 4 — Admin-Controlled | View |
| BearerSwapV3 | 0x5de315Dab49012c5bbeC41d7a3B25c6829a3e566 |
Tier 1 — Fully Immutable | View |
| FlatIDVaultV3 | 0x25ec1e6d07d70427BFA049Cc349079448080568C |
Tier 3 — Admin+Guardian | View |
| FlatIDSaveVaultV3 | 0xe1b70B17AEf2dc810C5EA9b73aEA092B7cA1270B |
Tier 3 — Admin+Guardian | View |
All addresses are EIP-55 checksummed. Do not hand-type addresses — copy from this table or from Etherscan directly.
- Tier 1 — Fully Immutable: No owner, no admin, no pause, no proxy. Pure bytecode.
- Tier 2 — Owner-Controlled Oracle: Owner can submit CPI data. No pause. No proxy.
- Tier 3 — Guardian-Protected: Guardian can pause (time-limited). No proxy. No upgrade.
- Tier 4 — Admin-Controlled: Admin manages operational parameters. No proxy.
src/ # Deployed contract source code (10 contracts)
interfaces/ # Shared interface definitions
- OpenZeppelin Contracts 5.x — ERC20, ERC20Permit, Ownable, ReentrancyGuard, SafeERC20
- Chainlink ETH/USD Feed —
0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419 - Uniswap V2 Router —
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D - Uniswap V2 Factory —
0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f
All contracts are verified on Etherscan. You can compare the source code in this repository byte-for-byte with the verified source on Etherscan.
The core protocol mechanic:
P(α) = C / (1 - α)
Where:
P= priceC= constant (initial price × initial supply)α= absorption ratio (% of supply permanently locked)
As α → 1, price → ∞. This is not a metaphor — it is deployed, verified code executing every 12 seconds on Ethereum.
- Website: flat.cash
- Smart Contracts (interactive): flat.cash/contracts
- AI Agent MCP Server: github.com/FlatDefi/flatcash-mcp
- Twitter: @FlatDeFi
MIT