API Reference

Index

Constructors

	Description
Constructors	Oracle vrf initialization

Functions

	Description
randomnessRequest	Make a request to generate random numbers
fulfillRandomness	VRF Oracle will call back when receiving valid VRF proof data

Constructors

constructor (address _oraiToken, address _oracle) public {
    fee = 1000000000000000000;
    orai = _oraiToken;
    oracle = _oracle;
}

�Funtions

randomnessRequest

function randomnessRequest(uint256 _seed, bytes memory _data) public returns (bytes32 reqId);

• _seed : a random number provided by the caller

• _data : the result of callbackAddress and callbackFunc after encoding

bytes memory data = abi.encode(address(this), this.fulfillRandomness.selector);

• callbackAddress: smart contract address receive random number

• callbackFunct : hen a function is called, the first 4 bytes of calldata specifies which function to call.

fulfillRandomness

function fulfillRandomness(bytes32 reqId, bytes calldata _data, uint8 v, bytes32 r, bytes32 s) external;

• reqId: request id generated when calling function randomnessRequest

• _data: includes callbackAddress and callbackFunc after encode

• v,r,s: proof vrf