ERC2615 NFT with Mortgage and rental functions

Simple explanation

This ERC will allow users to rent out their NFTs and take out mortgages by collateralising their NFTs. This standard can be applied to:

The implementation itself is written in simple language. It has tons of functions. Here are the basic ones:

"Suppose Alice owns an NFT and wants to take out a mortgage, and Bob wants to earn interest by lending tokens to Alice.

Alice approves the setting of a lien for the NFT Alice owns.
Alice sends a loan request to the mortgage contract.
Bob fills the loan request and transfers tokens to the mortgage contract. The lien is then set on the NFT by the mortgage contract.
Alice can now withdraw the borrowed tokens from the mortgage contract.
Alice registers repayment (anyone can pay the repayment).
Bob can finish the agreement if the agreement period ends and the agreement is kept (i.e. repayment is paid without delay).
Bob can revoke the agreement if the agreement is breached (e.g. repayment is not paid on time) and execute the lien and take over the ownership of the NFT." - ERC Author

"Suppose Alice owns NFTs and wants to rent out a NFT, and Bob wants to lease a NFT.

Alice approves the setting of a tenant-right for the NFT Alice owns.
Alice sends a rental listing to the rental contract.
Bob fills the rental request, and the right to use the NFT is transferred to Bob. At the same time, the tenant-right is set, and Alice becomes not able to transfer the right to use the NFT.
Bob registers rent (anyone can pay the rent).
Alice can withdraw the rent from the rental contract.
Alice can finish the agreement if the agreement period has ended and the agreement is kept (i.e. rent is paid without delay).
Alice can revoke the agreement if the agreement is breached (e.g. rent is not paid on time) and revoke the tenant-right and take over the right to use the NFT. " - ERC Author