The Messina.one NFT Bridge runs on the same messaging layers our token bridge uses. Currently, the NFT bridge only functions between Cronos and Polygon.
How the Messina.one NFT Bridge works
Messina.one's NFT Standard
Messina.one has developed a new NFT standard that ensures newly minted NFTs only exist on 1 chain at any given time. NFTs that adopt the Messina.one's standard will be burned at the source chain and minted on the destination chain when bridged through the Messina.one bridge.
When non-Messina.one NFTs are bridged, there will be one wrapped copy of the NFT at any given time.
NFTs that are preexisting or those that do not adopt the Messina.one NFT standard will first be locked at the source chain and a wrapped copy of it will be minted at the destination chain.
Subsequently, if the wrapped NFT is bridged to other chains, that wrapped NFT will be burned and re-minted on the new destination chain. The original NFT will still remain locked in the Smart Contract on the chain it was originally bridged from.
Whenever the wrapped NFT is bridged back to the original source chain, the wrapped NFT will be burned and the original NFT will be unlocked.