Research
Lean-checked Carbon Continuity thresholds define the conditional mathematical relationship.
The Viridis core service
One claim. One chain of evidence. No hidden leap.
A Verified Decision Chain connects the ecological evidence, economic model, computation, formal constraints, reproducibility receipt, and accountable human decision in one inspectable record.
Check project fit →What travels in the chain
Every conclusion keeps its warrant attached.
Evidence
What was observed or supplied?
Source, date, authority, boundary, and gaps
Model
How does ecological function enter the decision?
Versioned equations, coefficients, assumptions, and scope
Computation
What model-bound quantity follows?
Full-precision outputs, uncertainty, and refusal conditions
Formal constraint
Which relationships must hold?
Lean theorem identity, hypotheses, axiom set, and source hash
Recompute receipt
Can another analyst reproduce it?
Published inputs, executable method, and expected SHA-256
Decision boundary
Who remains accountable?
Open questions, external approvals, and the named decision owner
Worked kernel example
How one Natural Asset Continuity kernel uses the chain.
Evidence
Authorized pre/post-fire observations and supplied records carry source, date, coverage, and gaps.
Compute
The workbench separates physical pools, external treatment, uncertainty, and supplied commercial terms.
Verify
The Decision Record binds method identity, inputs, hashes, limitations, and the reproducible result.
Decide
The accountable project, registry, insurer, or portfolio owner decides what can be relied on next.
Computable
The model and its inputs are explicit enough to calculate, inspect, and test.
Verifiable
Formal constraints and portable receipts expose whether the stated chain holds.
Refusable
A failed gate, absent input, or unsupported conclusion stops instead of becoming confident prose.
The Lean boundary
Formal verification strengthens the chain without pretending the model is the world.
Lean can establish: within the stated formal model, the conclusion follows from its hypotheses and declared axioms.
A recompute receipt can establish: the reference computation deterministically reproduces the published output from the published inputs.
Neither can establish: empirical accuracy, ecological validity, ownership, legal effect, registry acceptance, credit existence, future outcomes, or the correctness of a human value judgment.
New design-partner application
Verified Ecological Compliance Chain
A full-cycle chain connecting a business activity to versioned obligations, attributable evidence, recomputable controls, formal checks, external reviews, a Compliance Decision Record, and re-audit triggers.
Bounded research kernel
Post-Fire Carbon Continuity Kernel
One specialized Natural Asset Continuity instrument for wildfire-exposed forest-carbon projects, beginning with a fixed-fee remote screen.