PCOC
What it is, and why the cost sits in the object
A PCOC is a small file you make. The name is production-constrained observable commitment. Anyone who holds the bytes can check them. There is no issuer and no account.
A copy is cheap. Making another object is not. The work is not shared across copies, so the next one costs again. The check stays cheap because the evidence is in the file.
Bitcoin paces the stages. It is a public clock and a binding, not a coin you spend and not an account. A leg is a run of steps. The object stores the leg results. It does not store a private key.
Film
Cost
The cost of making sits in the object. Who pays, and why a skipped check is not a measurement, is Cost and incidence. The questions behind that are the concepts.
Demonstration
Verify takes a PCOC file you already have. It sends those bytes to the verifier. It does not ask for a private key or a signature. This is a measurement, not admission and not sign-in.
Finished samples to download and drag in are on Examples.
Sign in is a different door. It sends an object and a signature. Verify does not. The phone app is on Demonstrations.