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Deploying Our PoC
- 1.Upload contract metadata and wasm (.contract files) for erc20, erc721 and AssetManager
- 2.Instantiate erc20 and erc721 contracts first using Alice as owner. erc20 initial supply is set to 1 billion units and both contracts get 10 units endowment.
- 3.Instantiate assetmanager contract using Alice as owner. Erc20 and Erc721 addresses will be set to the above deployed contracts; interest rate is set to 10 (% per year); transfer rate is set to 1 million (erc20 per erc721 token) and enabled is set to true.
- 4.Alice, being owner of erc20 and erc721, grants approval to assetmanager calling
setApprovalForAllof erc20 and er721 respectively.
- 5.Now Bob (or any else with balance) can mint an erc721 token, grant approval to assetmanager contract to spend this token, and
depositit in the assetmanager contract in exchange for 1 million erc20 tokens. These tokens are deducted from erc20 owner account (in this case Alice).
- 6.There are some utility methods that can be called by anyone to check Bob's outstanding balance and interest payable etc.
- 7.To repay, Bob needs to grant approval to assetmanager to spend his erc20 tokens. After that, he can call
withdrawmethod providing the token_id he is withdrawing. The assetmanager contract will deduct principal balance (1 million)+ interest from Bob's erc20 balance, deposit it in erc20 owner (Alice) and transfer erc721 token from Alice to Bob.