Smart Contracts

Production (Base mainnet)

Contract	Address
BatchSettler	`0xd281ADdB8b5574360Fd6BFC245B811ad5C582a3B`
Controller	`0x2Ab6D1c41f0863Bc2324b392f1D8cF073cF42624`
MarginPool	`0xa1e04873F6d112d84824C88c9D6937bE38811657`
OTokenFactory	`0x0701b7De84eC23a3CaDa763bCA7A9E324486F6D7`
Oracle	`0x09daa0194A3AF59b46C5443aF9C20fAd98347671`
Whitelist	`0xC0E6b9F214151cEDbeD3735dF77E9d8EE70ebA8A`
AddressBook	`0x48FE24a69417038a2D3d46B2B6B9De03b884eD72`
USDC	`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`
WETH	`0x4200000000000000000000000000000000000006`
cbBTC	`0xcbB7C0000aB88B473b1f5aFd9ef808440eed33Bf`

Testnet (Base Sepolia)

Contract	Address
BatchSettler	`0x766bD3aF1D102f7EbcB65a7B7bC12478C2DbA918`
Controller	`0xB64a532B71E711B5F45B906D9Fc09c184EC54CA0`
MarginPool	`0x727ddBD04A691E73feaE26349F48144953Ef20d6`
OTokenFactory	`0x1cEA6AE65c06972249831f617ea196863Fb66e6D`
Oracle	`0x101cB9E8a3105EfB18A81E768238eFc041F31E15`
Whitelist	`0xda732e343cfAd50Df28881B66f111779671a17E1`
AddressBook	`0x9e8cd9a79d667f4154e123604bF62d35a3d9673C`
LUSD (mock USDC)	`0xAB51a471493832C1D70cef8ff937A850cf37c860`
LETH (mock WETH)	`0x8A6Aa2304797898d46eC1d342Fedc817D3a973B6`
LBTC (mock cbBTC)	`0x39fA11EbBE82699Fd9F79C566D7384064571d2b4`

All contracts are UUPS-proxied and verified on BaseScan.

Key functions

executeOrder

function executeOrder(
    Quote calldata quote,
    bytes calldata signature,
    uint256 amount,
    uint256 collateral
) external returns (uint256 vaultId)

On BatchSettler. Permissionless. Atomically: verifies the market maker’s EIP-712 signature, locks your collateral, mints oTokens to the MM, and pays premium to you (minus 4% protocol fee). The Quote struct:

struct Quote {
    address oToken;
    uint256 bidPrice;
    uint256 deadline;
    uint256 quoteId;
    uint256 maxAmount;
    uint256 makerNonce;
}

All fields come directly from the GET /prices response. amount is in oToken units (8 decimals, 1e8 = 1 ETH notional).

Collateral calculation

Puts:

collateral = (amount * strike_price_8dec) / 1e10

Result in USDC (6 decimals). ETH Calls:

collateral = amount * 1e10

Result in WETH (18 decimals). BTC Calls:

collateral = amount

Result in cbBTC (8 decimals, same as oToken).

makerNonce

function makerNonce(address mm) external view returns (uint256)

Current nonce for a market maker. Quotes with stale nonce are rejected.

incrementMakerNonce

function incrementMakerNonce() external returns (uint256)

Invalidates all outstanding signed quotes for the caller. Used as a circuit breaker.

getVault

function getVault(
    address owner,
    uint256 vaultId
) external view returns (Vault memory)

On Controller. Returns vault details: shortOtoken, collateralAsset, shortAmount, collateralAmount.

Build on b1nary

​Production (Base mainnet)

​Testnet (Base Sepolia)

​Key functions

​executeOrder

​Collateral calculation

​makerNonce

​incrementMakerNonce

​getVault