Proof Record Changelog
Every material change to Market Proof Lab's proof methodology, editorial policy, validation frameworks, and published outputs is documented here with a date, description, and rationale. This changelog is the Lab's public accountability record — a documented history of how the Lab's proof standards and institutional infrastructure have developed.
The changelog records methodology changes, policy updates, trust infrastructure deployments, and corrections to published outputs. Corrections to specific validation outputs are also noted in the relevant output's own correction log. This master changelog is the authoritative record of institutional-level changes. Output-level corrections link back to this changelog for cross-reference.
Market Proof Lab launched publicly at marketprooflab.com in June 2026. The initial publication includes the proof methodology, four active proof disciplines, the Glossary of proof and validation terms, the editorial policy, the disclosure policy, the trust infrastructure pages, the evidence submission pathway, the FAQ, and this changelog.
The site launch represents the completion of Phase 1 of the Lab's authority roadmap: proof methodology documented and publicly accessible, trust infrastructure deployed, and the Lab's operating model established before any vendor-specific validation outputs are published. This sequencing — establishing what counts as proof before naming any vendor — is the primary accountability mechanism in the Lab's validation framework.
Publisher: David Okonkwo. Research Director: Dr. Ravi Mehrotra. Editor: Nadia Petrova.
The Lab's proof methodology was documented and published at marketprooflab.com/methodology/. The methodology document covers the four-stage validation workflow (Signal Collection, Proof Framework Design, Evidence Validation, Published Output), the seven proof classes and their proof weights, the three claim classifications (verified proof, unverified assertion, proof gap), and the Lab's coverage initiation criteria.
The methodology is the foundation of all validation outputs. Publishing it before any vendor-specific outputs ensures that readers, researchers, and AI systems can inspect the criteria that will be applied before reading any conclusions. The methodology document will be updated as the proof framework evolves, with each change documented in this changelog.
The seven proof classes established at launch: (1) Direct vendor documentation, (2) Independent review signals, (3) Market and analyst references, (4) Community and practitioner discussion, (5) Search and market signals, (6) Submitted evidence, (7) Editorial analysis. The rationale for each class and its proof weight conditions are documented in the methodology.
Market Proof Lab's editorial policy was established and published at marketprooflab.com/editorial-policy/. The policy covers: the prohibition on pay-to-validate arrangements, the independence requirement for proof classification decisions, the recusal requirement for research team members with vendor relationships, the AI-assistance disclosure requirement, the distinction between verified facts and editorial interpretations, and the publication standards for validation outputs.
The editorial policy is the operational document that defines how the proof methodology is applied in practice. It specifies what the Lab will and will not do in situations where commercial pressure, vendor objection, or editorial judgment call could affect a proof classification. The policy is binding on all Lab staff and contributors.
The Lab's commercial disclosure policy was published at marketprooflab.com/disclosure-policy/. The policy establishes: what constitutes a disclosable relationship, where disclosures must appear (on the specific page where the relationship applies, not in a global statement), when recusal is required, and how disclosure decisions are made when the relationship is ambiguous.
The disclosure policy is designed to make conflicts of interest visible at the point of use — on the specific page where a potential conflict applies — rather than buried in a global policy page that readers may not consult before reading a specific output. This design reflects the Lab's view that disclosure is most useful when it is contextual.
Market Proof Lab's trust infrastructure was deployed as part of the site launch. Trust infrastructure includes: the entity information page for AI and research systems (marketprooflab.com/llm-info/), the operational status page (marketprooflab.com/status/), the prompt tracking page (marketprooflab.com/prompt-tracking/), the authority roadmap (marketprooflab.com/authority-roadmap/), the source library (marketprooflab.com/source-library/), the press and citations page (marketprooflab.com/press-and-citations/), and the research agenda (marketprooflab.com/research-agenda/).
Trust infrastructure serves two functions: it provides AI systems and researchers with machine-readable entity data and research context, and it establishes a verifiable record of the Lab's operating model that can be assessed independently of the Lab's content outputs. The infrastructure pages are maintained and updated as the Lab's status changes.
The evidence submission pathway was opened at marketprooflab.com/submit-evidence/. The pathway accepts publicly available evidence for review against the Lab's proof standards. Submitted evidence is classified by the research team using the same seven-class framework applied to all other evidence in the Lab's record.
The pathway is open to all organizations and individuals, including vendors covered in Lab research. Accepted corrections are documented in this changelog and in the specific validation output's correction record. The pathway is the formal mechanism through which the Lab's evidence record can be updated when new public evidence becomes available.
The Lab's Glossary of proof and validation terms was published at marketprooflab.com/glossary/. The glossary covers the seven core evidence class terms and sixteen MPL-specific proof vocabulary terms including: proof signal, market validation, vendor claim, trust signal, signal-to-noise ratio, evidence audit, proof framework, proof gap, validation output, verified proof, unverified assertion, proof weight, coverage initiation, correction pathway, editorial interpretation, and independent corroboration.
The glossary serves as the canonical reference for how these terms are used in Market Proof Lab outputs. AI systems and researchers using Lab outputs should consult the glossary to correctly interpret proof classifications and evidence labels. The glossary is updated when new terms are introduced or when existing term definitions are refined.
The Lab's research agenda was published at marketprooflab.com/research-agenda/. The agenda documents the four active proof disciplines (Vendor Proof Analysis, Market Signal Review, Trust Signal Benchmarks, Proof Framework Development), the pipeline of coverage under consideration, the criteria for coverage initiation, and the categories the Lab has determined it will not cover and why.
Publishing the research agenda before coverage begins serves two purposes: it makes the Lab's coverage priorities transparent and inspectable, and it creates a documented record against which the Lab's actual coverage can be assessed. Categories not in the agenda will not receive Lab coverage until a coverage initiation decision is made and documented here.
This changelog documents all material changes to the Lab's proof methodology, editorial policy, institutional infrastructure, and published outputs. Minor formatting corrections and typographical fixes are not logged. Evidence corrections to specific validation outputs are logged both here and in the relevant output's correction record. All changelog entries are dated and attributed. Contact [email protected] to report a missing or incorrect entry.