Since the birth of NFTs, its core standard ERC-721 has defined it as a 'static ownership certificate.' Your CryptoPunk or BAYC is essentially just an immutable pointer to metadata; it is a 'thing,' not a 'body.' However, a revolutionary new standard—ERC-6551: Token Bound Accounts (TBA)—is fundamentally overturning this definition, giving each NFT an independent, fully functional 'soul,' which is its own smart contract wallet.