NFTs & Semi-Fungibles

On Solana, NFTs are often thought of as SPL Tokens with 0 decimals and a supply of 1. According to the Token Metadata Standard, however, it is possible for a range of different tokens to have NFT-like characteristics. VAMP refers to all NFT-like tokens as collectibles and will display them separately from Fungible tokens that appear on the Home tab. Specifically, VAMP will display all FungibleAsset, NonFungible, NonFungibleEdition and ProgrammableNonFungible tokens on their own Collectibles tab.

Grouping Collectibles

VAMP groups collectibles by their Certified Collections introduced in v1.1.0 of the Token Metadata Standard. In order to be grouped together, individual NFTs should all reference the same verified collection mint address. This mint address is itself home to an NFT with metadata that describes the collection (Example). Creators must ensure that this collection is verified on-chain (i.e. that verified is set to true).

If no verified collection is found, VAMP will fallback to grouping NFTs by the first verified creator's address in the on-chain creators field. If two unverified items share the same creator address at the 0 index of their creators array, they will be grouped into the same collection.

Naming Grouped Collectibles

When a group is created, a best-effort process is used to determine that group’s name. VAMP will look to these fields in the following order of preference:

1. name of the verified on-chain collection NFT

2. collection.name

3. collection.family

4. external_url (parsed to remove url parts)

5. name (of a single collectible)

6. symbol

7. address of the first verified creator in the creators array (also used to group the collection)

Displaying an Individual Collectible

When displaying the detail view of an individual collectible, VAMP will prioritize on-chain data in the Metadata Account over off-chain JSON linked via the uri field. This impacts both the name and symbol field which appears in both locations.