Circulating Sup ply is where things get trickier. How many of a given token are circulating? For Bitcoin it’s easy, just subtract how many haven’t been released from the max supply and you have your number. Other L1s like Ethereum and Solana either self-report it or there are APIs available that monitor it.

So if a token has a price of $10, a circulating supply of 10,000,000, and a max supply of 100,000,000, then the Market Cap would be $100,000,000 and the FDV would be $1,000,000,000.