Receives proofs through the InputBox contract and processes those proofs before updating the base layer.
In this case, user transaction history is sent together with the loan id in a proof. The transaction history is processed and the interest rate on the loan updated.
The SimpleLoanPool is a smart contract that manages a lending pool with the following features:
- ERC20 token-based lending system
- Role-based access control (Pool Managers, System, Approvers)
- Dynamic interest rate management
- Flexible loan terms and repayment schedules
- Upgradeable contract architecture
- Loan creation and activation
- Automated repayment calculations
- Interest rate adjustments
- Repayment processing with principal and interest tracking
- Access control hierarchies
- Input validation
- Upgradeable security pattern
- Balance checks
Work from the cartesi folder:
cd cartesiSpin up the local environment (Anvil):
cartesi build
cartesi runCreate a private key and assign funds to it:
curl -X POST --data '{
"jsonrpc": "2.0",
"method": "anvil_setBalance",
"params": [
"0x4A9A56af5CadA04dbBbaB8298BC4E149435DcB89", << address
"0x21E19E0C9BAB2400000" << amount
],
"id": 1
}' -H "Content-Type: application/json" http://localhost:8545Work from the contracts folder:
cd contractsMake an env file:
cp .example.env .envPut your private key in here.
Read your .env file into the terminal
source .envDeploy the contracts (Anvil), replace the address with the one of your private key (it makes you the owner):
forge script script/SimpleLoanPool.s.sol:SimpleLoanPoolScript --sig "deployWithToken(address,address[])" 0x4A9A56af5CadA04dbBbaB8298BC4E149435DcB89 "[0x4A9A56af5CadA04dbBbaB8298BC4E149435DcB89]" --rpc-url http://127.0.0.1:8545 --broadcastThis will deploy the contracts (including a mock token) and fund the loan pool.
Note down the token and loan pool address. You will need these for the .env file of the Loan Platform.