Smart Contracts

MarketFactory

Address: 0x0027Adb36E28fA1C037286Da59BB348fA2B63Bd6

The factory creates and tracks all prediction markets.

Write Functions

createMarketAndBet

Creates a market and places an initial seed bet in a single transaction.

function createMarketAndBet(
    string _question,
    bytes32 _feedId,
    int256 _strikePrice,
    uint256 _resolutionTime,
    uint256 _bettingCloseTime,
    bool _betYes
) external payable returns (address market)

Parameter	Description
_question	Human-readable market question
_feedId	keccak256(toUtf8Bytes("BTCUSD")) — get from Feed API
_strikePrice	Strike price in 18-decimal fixed point (e.g. 100000 * 1e18)
_bettingCloseTime	Unix timestamp (seconds) when betting closes
_resolutionTime	Unix timestamp (seconds) when market resolves via oracle
_betYes	true = bet Yes, false = bet No
msg.value	QUAI amount for the seed bet (must meet minSeedBet)

createMarket

Creates a market without a seed bet (owner only in practice).

function createMarket(
    string question,
    bytes32 feedId,
    int256 strikePrice,
    uint256 resolutionTime,
    uint256 bettingCloseTime
) external returns (address market)

Read Functions

Function	Returns	Description
getMarkets()	address[]	All market addresses
getMarketCount()	uint256	Number of markets created
markets(i)	address	Market address at index i
isMarket(addr)	bool	Whether addr is a valid market
minSeedBet()	uint256	Minimum seed bet in wei
treasuryFeeBps()	uint256	Treasury fee in basis points
creatorFeeBps()	uint256	Creator fee in basis points

Events

Event	Parameters
MarketCreated	market (indexed), creator (indexed), question, feedId, strikePrice, resolutionTime, bettingCloseTime

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ParimutuelMarket

Each market is a separate contract deployed by the factory.

Write Functions

betYes() / betNo()

Place a bet on the Yes or No outcome. Send QUAI as msg.value.

function betYes() external payable
function betNo() external payable

claim()

Claim winnings after market resolution. Reverts if you have nothing to claim.

function claim() external

resolve(storkUpdateData)

Resolve the market using Stork Oracle signed price data. Anyone can call this after resolutionTime. Requires sending the oracle update fee as msg.value.

function resolve(
    IStorkOracle.TemporalNumericValueInput[] storkUpdateData
) external payable

Read Functions

Function	Returns	Description
question()	string	Market question text
feedId()	bytes32	Oracle feed identifier
strikePrice()	int256	Strike price (18-decimal fixed point)
resolutionTime()	uint256	Unix timestamp for resolution
bettingCloseTime()	uint256	Unix timestamp when betting closes
status()	uint8	0=Active, 1=Resolved, 2=Cancelled
yesPool()	uint256	Total QUAI in Yes pool
noPool()	uint256	Total QUAI in No pool
getUserBets(user)	(uint256, uint256)	User’s (yesBet, noBet) amounts
calculatePayout(user)	uint256	User’s payout if they win
estimatePayout(isYes, amount)	uint256	Estimated payout for a hypothetical bet
getImpliedOdds()	(uint256, uint256)	(yesProb, noProb) as percentages
isBettingOpen()	bool	Whether betting is still open
yesWon()	bool	Whether Yes won (after resolution)
resolvedPrice()	int256	Actual price at resolution
totalVolume()	uint256	Total QUAI wagered
creator()	address	Market creator address
hasClaimed(user)	bool	Whether user has claimed winnings

Events

Event	Parameters
BetPlaced	user (indexed), isYes, amount, newYesPool, newNoPool
MarketResolved	yesWon, resolvedPrice
WinningsClaimed	user (indexed), payout
MarketCancelled	(none)