Price Oracle

Throughout the Phantazm Protocol, we require reliable, up to date, and secure price feeds. Our proxy price provider contract provides this capability and works by:

Phantazm market

1. First checking for a price from a API3 aggregator.

2. If the price is below or equal to zero, we call our fallback price oracle.​

   1. In the future, Phantazm governance mechanisms will manage the selection of sources and the fallback price oracle.

The source code can be found on the verified Etherscan contract.

Always get the latest price oracle address by calling getPriceOracle() on the LendingPoolAddressProvider contract.

View Methods

getAssetPrice**()**

function getAssetPrice(address _asset) public view returns(uint256)

Returns the price of the supported _asset in ETH wei units.

Parameter Name	Type	Description
_asset	address	address of the underlying asset​

getAssetsPrices**()**

function getAssetsPrices(address[] calldata _assets) external view returns(uint256[] memory)

Returns any array of prices in ETH wei units.

Parameter Name	Type	Description
_assets	address[ ]	an array of addresses of the underlying assets​

getSourceOfAsset()

function getSourceOfAsset(address _asset) external view returns(uint256)

Returns the address of the price source for _asset.

Parameter Name	Type	Description
_asset	address	address of the underlying asset​

ABI

Price Oracle ABIs

[ { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" }, { "internalType": "address", "name": "fallbackOracle", "type": "address" }, { "internalType": "address", "name": "weth", "type": "address" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "asset", "type": "address" }, { "indexed": true, "internalType": "address", "name": "source", "type": "address" } ], "name": "AssetSourceUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "FallbackOracleUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "previousOwner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "weth", "type": "address" } ], "name": "WethSet", "type": "event" }, { "inputs": [], "name": "WETH", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getAssetPrice", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" } ], "name": "getAssetsPrices", "outputs": [ { "internalType": "uint256[]", "name": "", "type": "uint256[]" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "getFallbackOracle", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getSourceOfAsset", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "renounceOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" } ], "name": "setAssetSources", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "setFallbackOracle", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }][ { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" }, { "internalType": "address", "name": "fallbackOracle", "type": "address" }, { "internalType": "address", "name": "weth", "type": "address" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "asset", "type": "address" }, { "indexed": true, "internalType": "address", "name": "source", "type": "address" } ], "name": "AssetSourceUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "FallbackOracleUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "previousOwner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "weth", "type": "address" } ], "name": "WethSet", "type": "event" }, { "inputs": [], "name": "WETH", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getAssetPrice", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" } ], "name": "getAssetsPrices", "outputs": [ { "internalType": "uint256[]", "name": "", "type": "uint256[]" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "getFallbackOracle", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getSourceOfAsset", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "renounceOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" } ], "name": "setAssetSources", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "setFallbackOracle", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }][ { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" }, { "internalType": "address", "name": "fallbackOracle", "type": "address" }, { "internalType": "address", "name": "baseCurrency", "type": "address" }, { "internalType": "uint256", "name": "baseCurrencyUnit", "type": "uint256" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "asset", "type": "address" }, { "indexed": true, "internalType": "address", "name": "source", "type": "address" } ], "name": "AssetSourceUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "baseCurrency", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "baseCurrencyUnit", "type": "uint256" } ], "name": "BaseCurrencySet", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "FallbackOracleUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "previousOwner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "inputs": [], "name": "BASE_CURRENCY", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "BASE_CURRENCY_UNIT", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getAssetPrice", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" } ], "name": "getAssetsPrices", "outputs": [ { "internalType": "uint256[]", "name": "", "type": "uint256[]" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "getFallbackOracle", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getSourceOfAsset", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "renounceOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" } ], "name": "setAssetSources", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "setFallbackOracle", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }]