Oracle System
RFX uses a dual oracle setup with price feeds from both Pyth and Stork to increase system resiliency and provide traders with the best pricing.
Last updated
RFX uses a dual oracle setup with price feeds from both Pyth and Stork to increase system resiliency and provide traders with the best pricing.
Last updated
To prevent front-running, every transaction is a two step process
First, user requests for an order eg. MarketIncrease, CreateDeposit
Keepers continuously scan the latest blocks for events emitted by user request
If found, keepers fetch signed prices from the oracle off chain API (prices are signed by the oracle provider for a given token and block hash)
Keepers call executeOrcer() with the signed prices within 1 block of user request, the smart contract decodes, verifies the provider signature and completes the order
Both min and max price are signed, this allows info about bid and ask spread to be included
Lookback Orders
RFX has also integrated lookback orders which guaranteed the execution price for an order remains the same even if the order is executed in a subsequent block, i.e. if the order was created at block n, it will be executed with oracle prices from block n.
Hybrid Oracles
Prices are provided by an off-chain system and posted on-chain upon a transaction being executed:
Oracle keepers continually check the latest blocks
When there is a new block, oracle keepers fetch the latest price
Keepers then sign the median price for each token together with block hash
Keepers send the data and signature to archive nodes
Archive nodes display the info for anyone to query
Learn more about Pyth price feeds here:
Learn more about Stork price feeds here: