The `RegenerativeNFT` contract is an upgradeable ERC-3525 token that allows for the creation, management, and transfer of NFTs with specific slots and time-based data. It includes functionalities for minting, splitting, merging, and redeeming tokens, with interest calculations based on a fixed APR. The contract uses external logic for certain operations and restricts some actions to the contract owner or a designated logic address.

The `RegenerativeMetadataDescriptor` contract generates metadata for ERC-3525 tokens. It constructs JSON metadata for the contract, slots, and individual tokens, encoding them in Base64. The metadata includes names, descriptions, images, and properties. It interacts with an `IRNFT` interface to fetch asset details and slot information, and uses helper libraries for encoding and string manipulation.

The `RegenerativeLogic` contract is an upgradeable smart contract that manages interactions with a Regenerative NFT (IRNFT) and an ERC20 token. It allows users to mint, merge, split, claim, and redeem NFTs, each representing a value in ERC20 tokens. The contract also supports creating slots for categorizing NFTs and includes functions for withdrawing ERC20 tokens and resetting NFTs. Only the owner can authorize upgrades.

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InVar Finance envisions to build hybrid financial infrastructure and platform by bridging real economy into crypto space.