In the world of blockchain and digital assets, the concept of fungibility is essential to understand.  

Fungible tokens (such as ERC-20 cryptocurrencies like USDC or SOL) are interchangeable. One unit is exactly the same as any other unit — just like one euro coin can be swapped for another identical euro coin. They have the same value and function. 

In contrast, Non-Fungible Tokens (NFTs) are completely unique. Built on standards like ERC-721 and ERC-1155 (on Ethereum-compatible chains) or Metaplex (on Solana), each NFT has a distinct identity. No two NFTs are the same — even if they belong to the same collection. They cannot be swapped on a 1:1 basis because each carries its own value, history, and characteristics.

Watch this short video to clearly understand the difference between fungible and non-fungible tokens. This concept is the foundation of why NFTs are unique and valuable for social impact projects. 

This uniqueness is what makes NFTs powerful for social impact. It enables verifiable ownership, provenance (a clear record of origin and ownership), and scarcity. These qualities are perfect for creating limited-edition impact art, digital certificates of achievement, community membership badges, or tokenized support for social causes. When you own an NFT, you own something truly one-of-a-kind that can represent real-world value and purpose.