Fismo - A State Machine Protocol for Ethereum (with a twist)

Consider this: There are standards for tokens that allow us to represent static things like currency, ownership, membership, and participation. But why do we have no standard for representing a map or process and an individual’s journey through it?

If you understand state machines, you will have no problem thinking of uses for them; they’re a simple but versatile tool. But they aren’t a common solution on the blockchain, most likely because there are no off-the-shelf solutions as there are for creating tokens. This is why I built Fismo.

There is a twist to this implementation. Rather than multiple users pushing a single machine into different states, Fismo tracks each user’s state in each machine. This makes it perfect for gating operations.

For instance, you could have an NFT premint that only allows people who have reached a certain waypoint in a quest to mint. Waypoints in the quest are represented as states in a Fismo machine, and you can query any user’s current state as well as their history. So reaching some waypoint is the threshold for minting, but states beyond that could determine how many NFTs the user can premint.

• Fismo source - GitHub
• Fismo docs
• Fismology Lab - Fismo experiments
• Fismo JavaScript SDK - npm
• Lockable Door demo - Polygon