The Joule-Credit (JC) is the sovereign currency of the Sovereign Future State programme. One JC represents one verified kilowatt-hour of energy produced by an SFS-certified fusion reactor. It cannot be printed. It cannot be created without energy production. It is the first currency in human history whose supply is directly constrained by a fundamental law of physics.
JC is activated at fusion net energy gain — the moment the SFS programme achieves more energy out than in. Target: 2035. From that moment, every kilowatt-hour produced issues exactly one JC. The programme's fusion IP becomes the mint.