🪙ERC-6454

We have chosen to utilize the ERC-6454* standard for our NFTs, which extends ERC-721 by introducing the capability to identify whether an NFT can be transferred or not. This proposal enables the prevention of token transfer, making them bound to the account, smart contract, or token that owns them.

The motivation behind implementing this standard is to enhance the utility and evolution of NFTs. By preventing the easy transfer of achievement-indicating NFTs, we establish verifiable attribution for personal achievements. This ensures that the account owning the NFT is the one that actually achieved the corresponding accomplishment, creating a secure and trustworthy record of achievements.

Furthermore, this standard enables the binding of NFTs to specific properties, ensuring that the original owner retains ownership of these properties and their uniqueness.

*Refer to this https://eips.ethereum.org/EIPS/eip-6454