Project Baru
Library to facilitate DeFi on liquid.
Loan Protocol
- The lender and borrower need to agree on the principal, loan_term, collateral of the loan contract.
- The borrower sends the lender the LoanRequest with the UTXO's to fund the collateral, collateral amount, borroweraddress,
borrowerpublic_key(not associated witht he borrower address).
- The lender receives the message and creates the loan transaction:
inputs:
principalinputs: coming from the the lender
collateralinputs: coming from the borrower
outputs:
collateraloutput: locked by the collateral output locking script (defined below)
principaloutput: locked to borrower address
borrowerchangeoutput
lenderchangeoutput
fees.
- The loan transaction is unsigned, the lender sends it to the borrower to sign along with some secret values to enable
repayment later on (blinding factors)
- The borrower verifies (fancy because of confidential transaction) the transaction and signs the collateral inputs.
- The borrower send the signed transaction to the lender.
- The lender signs the principal inputs.
- The lender broadcasts the loan transaction
Collateral Output Locking Script
if is_repayment {
if the tx that is using the collateral output as an input:
1. includes and output that pays the principal + interest to the lender
2. the sender is the borrower
return 1
else
return 0
} else {
//liquidation at expiration
if the current block number is < loan_term
return 0
if the sender is not the lender
return 0
return 1
}