JSE is capitalizing one complete proof asset designed to convert architecture into measured evidence, then use that evidence to open a customer-owned fleet model with recurring Assurance, Lifecycle and optional Intelligence.
Informational only. Not an offer or solicitation to buy or sell any security. Final financing structure remains subject to counsel, commitments and definitive documentation.


The current capitalization architecture distinguishes the machine's gross build cost, working-capital reserve and preferred mix of equity versus non-equity equipment/vendor finance.
The approximately $0.9M non-equity component must be committed to be treated as finance. If it is not, JSE either increases equity or deliberately uses the validation-fill fallback. The total capitalization requirement is not automatically the securities offering amount.
Thermals, C60 part-load behavior, AI transients, BESS sizing and dry-rejection evidence.
Control traces, fault response, fabrication learning, deployment procedure, maintenance evidence and fluid/TIM qualification.
Actual BOM data, NRE separation and the evidence needed before publishing mature fleet COGS, ASP, margin or payback.
JSE resolved the capital-intensity problem by separating who owns the asset from who earns the ongoing relationship.
Customer owns the HEARTHCube. JSE earns hardware/integration margin supported by progress-payment architecture once commercial terms are validated.
Evidence/support and physical field service recur because the installed machine requires disciplined stewardship—not because safe operation is held hostage.
Optimization becomes a separate fee only where measurable value supports it. This is the layer closest to software economics.

HEARTHCube is not underwritten as a clever way to shave a modest electricity bill. It exists for projects where waiting for utility interconnection delays or destroys the value of the compute asset.
Repeat-build COGS, fleet ASP, gross margin, mature payback and market-dollar totals remain gated by vendor quotes and customer commercial terms.
Thermal value is not booked because a pipe exists. It requires a usable sink, metering, counterparties and a contract.
Retired economics from earlier concept documents are not part of the current investment case.
JSE maintains investor, architecture and diligence materials with claim status, source discipline and current commercial locks carried through the stack.
Jack Stallion · Founder & Engineer
[email protected] · 215.756.5552