To implement an NFT staking contract, you'll need a staking token, data structures to track stakes, functions to create and remove stakes, and a reward.
Storing NFT metadata on-chain is very expensive and nonsensical in most situations. Here's how to create an NFT contract factory with off-chain metadata.
Bitcoin showed us the first use-case of blockchain technology; Ethereum will show us many more. It's a marketplace of financial services, games, and apps that can't steal your data