1. Problem and Architectural Premise
Conventional building-material certification is structured around the assumption that one material carries one regulated property, signed by one authority, and consumed by one downstream specifier. ASTM tests compressive strength; the structural engineer signs the as-built drawings; the inspector signs the certificate of occupancy; the file is closed. When the same material additionally stores grid-relevant electrical energy, the chain breaks: structural engineering has no mandate over electrical safety, electrical engineering has no mandate over compressive performance, and the insurer underwriting fire risk has no signed surface against which to compute exposure. The contemporary workaround is bilateral integration: each authority pair negotiates a project-specific reconciliation, the project-specific reconciliation is documented in unsigned PDFs, and the resulting governance is non-portable, non-auditable, and non-revocable.
The architectural premise of the disclosed primitive is that property surfaces are first-class, signed, composable artifacts rather than narrative claims in a procurement document. Each property surface, structural, thermal, energy-storage, distribution, networking, water-coupled, thermal-coupling, carbon-sequestration, is a named, structured object with a versioned schema, a signing authority, and explicit composition rules describing how it interacts with other surfaces. The material's identity is bound by a master credential signature that anchors the surfaces to a single physical artifact whose lineage from feedstock through end-of-life is recorded in a continuous chain. The premise treats certification as continuously verifiable cryptographic state rather than as point-in-time documentation, and it treats multi-authority governance as a structural feature of the architecture rather than as an accommodation made for unusual cases.
The premise has three operational consequences. First, downstream consumers, grid operators committing storage, insurers underwriting risk, carbon-credit registries issuing tonnage, verify against signed surfaces rather than against transcribed claims, eliminating the transcription-error surface and the after-the-fact dispute over what was actually attested. Second, in-service re-credentialing events update specific surfaces without invalidating the others, so a structural surface remains valid for fifty years even as the storage surface is retired at twenty. Third, revocation flows propagate cryptographically, a withdrawn laboratory certification disables the affected surface across every dependent system without requiring the dependent systems to discover the withdrawal independently. The data-sheet model offers none of these properties, and bolting them onto the data-sheet model produces a fragile veneer rather than a durable architectural foundation.
2. Core Architectural Primitive
The disclosed admissibility profile comprises a master-credential signature binding the material's identity to a plurality of property surfaces, where each property surface is itself a signed object containing measured values, measurement methodology references, validity intervals, jurisdictional scope, and a pointer to the composition rules under which the surface participates. The master credential is structurally analogous to a certificate authority signature in a public-key infrastructure, except that the authority is not a single entity: it is a multi-authority signature block in which structural engineering, electrical engineering, carbon accounting, and other domains each contribute partial signatures composed under an explicit threshold rule. The composition is not a flat aggregation but a structured graph in which precedence, compatibility, and derivation rules are themselves signed and versioned.
Each property surface carries a defined cardinality of measured properties. The structural surface carries compressive strength, tensile strength, elastic modulus, durability index, freeze-thaw cycling tolerance, and fatigue limit. The thermal surface carries R-value, thermal mass, conductivity, fire-resistance rating, and thermal-cycling stability. The energy-storage surface carries usable capacity, peak power, round-trip efficiency, calendar life, cycle life, and a safety classification. The distribution surface carries operating voltage, continuous current, dielectric strength of insulation, fault-tolerance class, and a grid-compatibility envelope. The networking surface carries available bandwidth, characteristic latency, signal integrity bounds, and electromagnetic-compatibility class. The water-coupled surface carries vapor permeability, hydration state, freeze-thaw water-coupled durability, and an attested water-quality envelope. The carbon-sequestration surface carries sequestered mass, methane-avoidance attestation, end-of-life carbon recovery, and a lifecycle balance reference.
The composition rules express how surfaces interact. Some interactions are orthogonal: structural strength does not constrain energy-storage capacity at engineered loading levels, so the surfaces compose independently. Other interactions are conditional: high cycling current density must be bounded by structural-element thermal limits, so the energy-storage surface carries a derived bound from the thermal surface. Still others are precedence-ordered: a fire-safety classification asserted by the regulatory authority overrides a softer fire-resistance value asserted by the manufacturer when the two conflict. The composition rules are themselves signed objects, versioned across deployments and jurisdictions, admitting governance evolution without breaking continuity of previously signed surfaces. The primitive is therefore not merely a collection of attestations: it is a compositional algebra over signed attestations, with the algebra itself under cryptographic governance.
4. Lineage Chain Across the Material Lifecycle
The profile is not a static document: it is a lineage chain that records credentialed events from raw-material sourcing through fabrication, installation, in-service operation, state-of-health monitoring, decommissioning, and end-of-life recovery. Each event is signed by the responsible authority and committed to the chain with cryptographic continuity to prior events. Sourcing events bind the material's feedstock, for a credentialed cementitious substrate, this includes the biomass-graphene precursor and its methane-avoidance attestation. Fabrication events bind the manufacturing process, the as-shipped measured values, and the manufacturing-batch identifier. Installation events bind the in-place geometry, the as-installed measurements, and the inspector's certification. In-service events record state-of-health observations, including capacity-fade trajectory for the storage surface, structural-cycle-counting for the structural surface, and dielectric-aging metrics for the distribution surface.
The chain admits a verifier at any point to reconstruct the full provenance of the material from the originating biomass feedstock through the present moment, with each link cryptographically attached to the prior link. State-of-health events do not overwrite earlier measurements; they append, preserving the historical trajectory. This is operationally significant for carbon-credit issuance, because credit issuance requires demonstrable continuity from feedstock to sequestered state, and for insurance, because underwriting requires demonstrable continuity of structural and safety surfaces across the operating window.
Decommissioning events retire surfaces selectively. A structural element whose storage chemistry has reached end-of-cycle-life can have its storage surface retired by signed end-of-storage-life attestation while preserving its structural, thermal, and networking surfaces, the building does not lose a column when the column's capacitor is exhausted. Recovery events bind the end-of-life carbon recovery, which closes the carbon-sequestration surface's lifecycle balance. Re-credentialing primitives admit reassertion of retired or expiring surfaces under updated measurements, with the prior measurement preserved in the chain for audit. The lineage chain is structurally analogous to the trust-slope continuity primitive of the Identity Application, transposed from semantic agents to physical materials, and it inherits the same cryptographic guarantees of append-only continuity, signed event causality, and verifiable historical reconstruction.
5. Composition Rules: Precedence, Compatibility, Derivation
Composition rules govern how surfaces interact within a single material's profile and how the material's profile composes with other materials' profiles in an assembled structure. Three rule categories are recited in the disclosure: precedence, compatibility, and derivation. Precedence rules resolve conflicts between overlapping signatures, when the manufacturer signs a fire-resistance value of two hours and the regulator signs a jurisdictional cap of ninety minutes, the precedence rule deterministically selects ninety minutes for purposes of jurisdictional admissibility while preserving the manufacturer's claim in the lineage chain. Compatibility rules reject incompatible compositions, a material whose energy-storage surface admits aqueous electrolyte cannot compose with a distribution surface specifying solvent-based interconnect, because the compatibility rule signed by the relevant authority rejects the combination at admissibility check.
Derivation rules generate bound values on dependent surfaces from values on prior surfaces. The thermal surface's fire-resistance rating may be partially derived from the structural surface's mass and the carbon-sequestration surface's combustion-product attestation; the storage surface's allowable cycling rate may be derived from the structural surface's thermal limits and the distribution surface's interconnect ampacity. Derivation rules are signed objects, versioned, and traceable in the lineage chain; a derived value is annotated with the derivation rule version that produced it, and a change to the derivation rule generates a re-credentialing event rather than silently overwriting the prior derivation.
Composition across materials extends the same machinery. Two materials joined in a structural assembly compose their surfaces under signed assembly-level rules, generating an assembly-level profile whose master credential signature binds the constituent material profiles by reference. The assembly-level profile is itself a credentialed object that participates in further composition at the building level. The recursive structure admits arbitrary depth, a building's master profile composes wall profiles, which compose panel profiles, which compose constituent material profiles, without losing cryptographic continuity at any level. Versioning of composition rules at each level is independent, so a jurisdictional update to assembly-level fire-rating rules does not invalidate constituent material signatures and does not require re-signing of unaffected layers.
6. Operating Parameters and Engineering Envelope
The credentialed admissibility profile is a metadata artifact attached to a physical material, and the engineering envelope of the artifact is bounded by the physical envelope of the material it describes. For the cement-graphene structural substrate that is the immediate target of the disclosure, the envelope spans compressive strengths in the range of 20 to 60 megapascals, energy-storage capacities on the order of 0.1 to 1 watt-hour per kilogram of structural material, operating voltages bounded by the aqueous-electrolyte stability window (approximately 1.0 to 1.2 volts per cell), cycle life on the order of 100,000 to 1,000,000 cycles for the underlying electric-double-layer mechanism, and structural calendar life on the order of 50 to 200 years.
The profile architecture itself imposes additional envelope parameters. Surface signature size is bounded by the underlying signature scheme: a typical surface signature is on the order of hundreds of bytes, and a fully populated multi-surface profile is on the order of a few kilobytes, well within the storage envelope of even passive RFID tags embedded at fabrication. Signature verification latency is bounded by the verification cost of the underlying scheme, sub-millisecond on commodity hardware for elliptic-curve signatures. Lineage-chain growth is bounded by the rate of credentialed events: sourcing, fabrication, installation, periodic re-inspection (annual or semi-annual), and state-of-health observations (which may be hourly in dense observatory operation but are typically aggregated into daily or weekly chain commits).
Composition-rule evaluation is bounded by the cardinality of the surface set and the depth of the derivation graph. For the disclosed eight-surface architecture, a complete admissibility check at installation involves on the order of dozens of pairwise compatibility evaluations and a small number of derived-value computations, completing in milliseconds on commodity hardware. Re-credentialing latency is bounded by the human process of measurement and authority signature rather than by the cryptographic machinery, which contributes negligibly. The engineering envelope is therefore dominated by the physical material's envelope rather than by the credentialing overhead, and the disclosure positions the credentialing as a near-zero-overhead enhancement rather than as a cost burden on construction economics.
7. Alternative Embodiments
Several alternative embodiments are recited within the disclosure scope. A first alternative substitutes a hardware-rooted signature anchor, a manufactured-in secure element bound to the material at fabrication, for software-only signature provenance, providing tamper-evident binding between the master credential and the physical artifact. A second alternative implements the lineage chain on a permissioned distributed ledger shared among the authority classes rather than on per-material append-only logs, admitting cross-material lineage queries at the cost of shared-ledger governance complexity. A third alternative implements the lineage chain on per-material self-contained chains anchored to a public timestamping service, admitting independent operation at the cost of weaker cross-material query.
A fourth alternative reduces the surface set for materials whose function set is narrower, a credentialed cementitious wall panel without storage function carries a six-surface profile (structural, thermal, networking, water-coupled, thermal-coupling, carbon-sequestration) without the energy-storage and distribution surfaces, and the composition rules degrade gracefully under the reduced set. A fifth alternative extends the surface set for materials carrying additional regulated functions, such as acoustic-isolation or electromagnetic-shielding surfaces, with the new surfaces admitted under the same signature-block and composition-rule architecture as the recited eight.
A sixth alternative admits zero-knowledge attestation of property values where the underlying measured value is commercially sensitive, the manufacturer signs a proof that compressive strength exceeds the regulatory threshold without disclosing the precise measured value, admitting regulatory verification while preserving competitive confidentiality. A seventh alternative admits revocable transferable attestations for material reuse from one construction event to another, with the lineage chain persisting across transfer and the new project's authority block appending to the prior project's chain. Each alternative preserves the core primitive, signed multi-surface admissibility under composition rules with a master credential and a lineage chain, and varies only the implementation choices governing signature anchoring, ledger architecture, surface cardinality, and disclosure granularity.
8. Composition With the Broader Architecture
The credentialed-materials primitive is one of several primitives in the broader Adaptive Query architecture, and its composability with the others is a structural feature of the disclosure. The substrate-mode storage primitive provides the physical artifact whose energy-storage and distribution surfaces the credentialing primitive certifies; without credentialed surfaces, substrate-mode storage cannot participate in regulated grid services. The pair-settled grid-services primitive consumes the credentialed energy-storage and grid-commitment surfaces directly, settling bilateral transactions against signed material identities without intermediary aggregator. The distributed physical-state observatory primitive consumes the credentialed networking and water-coupled surfaces, treating the credentialed substrate as a governed sensor whose observations are admissible because the substrate's measurement provenance is signed.
The credentialing primitive composes upward into building-system credentialing. A building's master profile aggregates per-element credentialed profiles into a building-level admissibility surface that participates in carbon-credit issuance, insurance underwriting, and grid-resource registration as a single signed entity. The aggregation is recursive: per-element profiles compose into per-assembly profiles, which compose into per-building profiles, which compose into per-portfolio profiles for institutional owners holding multiple credentialed buildings. At each level, the master credential signature anchors the level's surfaces to the underlying physical artifacts via the lineage chain.
The primitive composes outward into adjacent regulated systems. Carbon-credit registries consume the carbon-sequestration surface directly. Building energy benchmarking consumes the thermal and energy-storage surfaces. Resilience certification consumes the structural, energy-storage, and grid-commitment surfaces in combination. Each consuming system speaks the same surface vocabulary and verifies against the same signature scheme, eliminating bilateral integration overhead and admitting coherent governance across regulated functions that are conventionally siloed.
9. Prior-Art Distinctions
Building-material certification has a long prior-art history, but the prior art is structurally restricted to single-function, single-authority, single-document attestation. Material data sheets standardized under ASTM, EN, and ISO frameworks specify single-function properties under single-authority signature without compositional rules, without lineage continuity, and without multi-authority signature blocks. Digital product passport initiatives in the European regulatory space introduce digital documentation of construction products but treat the documentation as a static record rather than as a compositional, signed, multi-surface artifact under multi-authority governance. Provenance-tracking proposals in the construction supply chain provide lineage of supplier identity and shipment events but do not extend to in-service property surfaces, do not support multi-authority signatures, and do not specify composition rules.
Cryptographic attestation systems in adjacent domains, supply-chain provenance for food and pharmaceuticals, certificate authorities for digital identity, blockchain-based asset tokenization, provide signed attestations but do not address multi-surface composition under signed and versioned rules, do not address the six-class authority architecture specific to regulated building materials, and do not address selective surface retirement via end-of-storage-life attestation while preserving other surfaces.
The recited primitive is distinguished by the simultaneous combination of the master credential signature binding plural property surfaces, the six-authority signature block with explicit scope boundaries, the signed and versioned composition rules covering precedence, compatibility, and derivation, the lifecycle lineage chain spanning sourcing through end-of-life recovery, the selective surface retirement under signed re-credentialing, and the recursive composition into assembly, building, and portfolio levels. No prior reference combines these elements, and the combination is the architectural primitive on which a regulated multi-function building substrate becomes tractable.
10. Disclosure Scope
This primitive is disclosed under U.S. provisional application 64/050,895, filed April 27, 2026. The provisional discloses credentialed admissibility profiles for multi-function building substrates, with the master credential signature binding plural property surfaces, the multi-authority signature block admitting at least the manufacturer, testing laboratory, regulatory, utility, insurer, and building-inspector authority classes, the signed and versioned composition rules governing precedence, compatibility, and derivation interactions among the surfaces, the lineage chain recording credentialed events from sourcing through fabrication, installation, in-service operation, state-of-health monitoring, decommissioning, and end-of-life recovery, the selective surface retirement under signed end-of-storage-life and re-credentialing primitives, and the architectural composition with substrate-mode storage, pair-settled grid services, distributed physical-state observatory operation, building-electrical-system aggregation, carbon-credit issuance, and insurance underwriting frameworks.
The disclosure scope includes the recited eight property surfaces (structural, thermal, energy-storage, distribution, networking, water-coupled, thermal-coupling, carbon-sequestration) and explicitly contemplates extension to additional regulated surfaces under the same signature-block and composition-rule architecture. The disclosure scope includes the alternative embodiments recited in Section 7 covering hardware-rooted signature anchors, distributed-ledger and self-contained-chain lineage architectures, reduced and extended surface sets, zero-knowledge attestation of commercially sensitive measured values, and revocable transferable attestations for material reuse. Coverage extends to recursive aggregation into assembly-level, building-level, and portfolio-level credentialed profiles, and to the architectural composition with the broader Adaptive Query primitive set under which the credentialed-materials primitive operates.
