Problem

NFT should be have value on it not just PFP. We create the super great Smart Contract BuidlerProtocol that treat it as the central of the Builders! Every builders can create many build for themself for any project(every project is an NFT). Builder will continue add new build on the NFT, so their users(buyer) can mint NFT(buy it with $NST), then can sell it or make an Ask order, and the guy do not mint the NFT can buy NFT from the de-market or just make a new Bid for the NFT. While builder add new build for his/her NFT projects, they need to add the cidRaw and size, so later the SP can call activateDealBySP to activate the deal, then call the withdrawReward with cidRaw to get the reward.

FEVM DataDAO

we use the FEVM Actor API in our smart contract to pay storage fee while builder add new item for their NFT build, and SP can activateDealBySP and withdrawReward. It depends the HyperActor from the @zondax/filecoin-solidity

• addItem and pay $FIL to store deal: https://github.com/NftTopBest/buiders-space-fevm-lighthouse/blob/main/contracts/Item.sol#L12
• DataDAO: https://github.com/NftTopBest/buiders-space-fevm-lighthouse/blob/main/contracts/DataDAO.sol

lighthouse SDK

• encrypted content with access conditions: https://github.com/NftTopBest/buiders-space-fevm-lighthouse/blob/main/frontend/stores/mvStore.ts#L248
• decrypted content: https://github.com/NftTopBest/buiders-space-fevm-lighthouse/blob/main/frontend/stores/mvStore.ts#L224

EIP2535 to build large contract https://eips.ethereum.org/EIPS/eip-2535

Our contract is large, so we use the Diamond Tech to build our smart contract: use the diamond cut func to deploy more facts: https://github.com/NftTopBest/buiders-space-fevm-lighthouse/blob/main/contracts/DiamondCutFacet.sol