Oraichain
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API Reference

Index

Constructors

Text
Description
Constructors
Oracle vrf initialization

Functions

Text
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