ensuro 3.0.0b1

Prototype and wrappers to work with Ensuro Smart Contracts

ensuro

Prototype and wrappers to work with Ensuro Smart Contracts

This package is for working with the Ensuro Protocol (https://github.com/ensuro/ensuro) from Python.

It includes the prototype written in pure-python that can be used for simulation of Ensuro. Also includes the wrappers that together with the compiled contracts can be used to deploy or use contracts deployed on the blockchain.

Getting information from Ensuro objects

PremiumsAccount

• .active_pure_premiums

• .surplus: balance of pure premiums of finalized policies.

• .won_pure_premiums: accumulated pure premiums of expired/not defaulted policies.

• .borrowed_active_pp: pure premiums of active policies that were used for payouts. Always <= active_pure_premiums` and always = 0 if won_pure_premiums != 0.

• .pure_premiums: it’s a property that computes the total pure premiums as self.active_pure_premiums + self.won_pure_premiums - self.borrowed_active_pp

EToken

• .total_supply(): total amount in dollars in the pool.

• .scr: amount that it’s locked as solvency capital of active policies

• .scr_interest_rate: weighted average of the interest rate paid by the active policies

• .utilization_rate: percentage of utilization of the eToken. Property calculated as scr / total_supply

• .token_interest_rate: interest rate for the EToken, it’s calculated as scr_interest_rate * utilization_rate

• .funds_available: available capital (total_supply - scr)

• .funds_available_to_lock: available capital that can be used as scr, (total_supply - scr) * max_utilization_rate

• .total_withdrawable(): amount that can be withdrawn, considering the liquidity_requirement.

• .get_loan(): current debt of the pool with this eToken

RiskModule

• .get_minimum_premium(payout, loss_prob, expiration): minimum premium

Copying files from Ensuro main repository

Instructions to copy files from ensuro repository:

rm src/ensuro/contracts/*.json
for x in `find ../ensuro/artifacts/contracts/ -maxdepth 2 -name "*.json" -not -name "*.dbg.json" `; do
    cp $x src/ensuro/contracts/ ;
done
for x in `find ../ensuro/artifacts/contracts/interfaces/ -maxdepth 2 -name "*.json" -not -name "*.dbg.json" `; do
    cp $x src/ensuro/contracts/ ;
done
for x in `find ../ensuro/artifacts/contracts/underwriters/ -maxdepth 2 -name "*.json" -not -name "*.dbg.json" `; do
    cp $x src/ensuro/contracts/ ;
done
for x in ERC1967Proxy.json IERC20Metadata.json IERC20.json IERC721.json ; do
    cp `find ../ensuro/artifacts/@openzeppelin/ -name $x` src/ensuro/contracts/$x ;
done
cp ../ensuro/artifacts/@ensuro/utils/contracts/TestCurrency.sol/TestCurrency.json src/ensuro/contracts/TestCurrency.json
cp ../ensuro/prototype/ensuro.py src/ensuro/prototype.py
cp ../ensuro/prototype/wrappers.py src/ensuro/wrappers.py
cp ../ensuro/prototype/utils.py src/ensuro/utils.py

Note

This project has been set up using PyScaffold 4.1.1. For details and usage information on PyScaffold see https://pyscaffold.org/.