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Finterest

Finterest is a decentralized lending and borrowing protocol hosted on the Internet computer.
Our canister principal is listed below:
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How it works visualized

Protocol Math

All math on Finterest is done using integers. All assets have a token decimal cutoff that represents the smallest decimal unit of that asset. For example the ICP token has 8 decimals. If you want to signify 5.2 ICP you need would enter in 520_000_000 as into the protocol. See below for other assets and token decimals. Liquidity is denominated in USD with 8 decimals.

Assets

fToken
fToken Decimal
Underlying
Underlying Decimal
fICP
8
ICP
8
fCkBtc
8
CkBtc
8
fXTC
8
XTC
12

Notational Token (Not for Lending or Borrowing Just for Liquidity Displays)

Token
Decimal
USD
9

Exchange Rate

The exchange rate is given by the amount of tokens one would receive for 1 underlying token.
exchangeRateMantissan=(totalCashn+totalBorrowsntotalReservesn)mantissatotalfTokenSupplynexchangeRateMantissa_{n} =\\\frac{ (totalCash_{n}+totalBorrows_{n}-totalReserves_{n})*mantissa}{totalfTokenSupply_{n}}