RFV is the acronym for Risk-Free Value which is a separate wallet in Poseidon's PAP system. The RFV uses an algorithm that backs the Rebase Rewards and is supported by a portion of the buy and sell trading fees that accrue in the RFV wallet.
In simple terms, the staking rewards (rebase rewards) which are distributed every 30 minutes are backed by the RFV parameter, thus ensuring a high and stable interest rate to $POS holders.
The RFV is dedicated to buy backs and burns of $POS tokens when the FTM/POS pair supply is equal to or greater than 2.5% of the total supply.