Social Impact Voucher (built on Union Finance)

Overview

• This is the smart contract for realizing social impact voucher that supporter members (who trust NPOs) can vouch for NPO members and NPO members can borrow vouched-amount of assets from their credit line.
  • Social Impact Voucher smart contract is built on Union Finance: https://docs.union.finance/protocol-overview/plain-english-overview
  • Social Impact Voucher smart contract bring alternative way of fundraising to NPOs (Non Profit Orginaizations).
    • This is not the way of using bond like SIB (Social Impact Bond) but the way of using voucher based on off-chain trust as SIV (Social Impact Voucher).
    • Once supporter members (who trust NPOs) vouch for NPO members, NPO members can borrow vouched-amount of assets from their credit line.
  • A use case of "Many -> 1" in use cases of Union Finance is used in this smart contract: https://docs.union.finance/protocol-overview/master

Workflow

• NOTE:
  • Once a NPO user register as a NPO member, they receive a NPO NFT as a proof of NPO member.
    • Only NPO NFT holder can receive vouched-amount in uDAI (uToken).

• Diagram of workflow

Installation

• 1. Install modules

yarn

• 2. Compile smart contracts

yarn compile

Test (Mainnet-forking test)

• Scenario Test

yarn test-scenario:SocialImpactVoucher

Demo

• Demo video of scenario test: https://youtu.be/-t6G3bHOHRM

Resources

• Union Finance📈

  • SCs：https://github.com/unioncredit

    • Union Protocol V1 SDK：https://github.com/unioncredit/union-v1-sdk
    • Deployed-addresses：https://docs.union.finance/developers/overview

  • Docs:

    • Union Contracts Overview
      https://docs.union.finance/developers/union-contracts-overview

    • Voucher Example
      https://docs.union.finance/developers/union-sdk

    • Key Protocol activities
      https://docs.union.finance/protocol-overview/plain-english-overview

    • Use cases
      https://docs.union.finance/protocol-overview/plain-english-overview

    • What does Union do that wasn’t previously possible?
      https://docs.union.finance/protocol-overview/master

  • Workshop

    • Union Finance 🛠 Masters of Credit:Building Smart Contracts that can Borrow and Lend without Collateral
      https://youtu.be/h5Eynrw9EC4

• EthCC Hack 2022 Paris:
  • Union Finance channel on Discord: https://discord.com/channels/983106014637355089/998970729947222096
  • Devpost: https://ethcchack2022.devpost.com/