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Change Governance Rules These rules govern how the framework itself evolves. Stability is a feature — downstream systems (EU customs, carbon registries, AI agents) depend on predictable interfaces. R-CHG-01 ⅔ Supermajority for Major Changes Changes to c...

7-Layer Technical Standards Stack The framework uses a layered architecture where each layer has a specific, non-overlapping responsibility. No single existing standard covers the full pipeline — the stack was assembled to fill real gaps in LATAM climate data ...

T-01: Identity & Credential Layer W3C DID 1.1Decentralized Identifiers. Every participant (human, organisation, AI agent, IoT sensor) has a DID. CTH uses did:web for organisations and did:key for ephemeral agent sessions. cth:FPICCredential (CTH-original)A W...

T-02: Provenance & Quality Layer W3C PROV-OThe W3C Provenance Ontology. Every data submission, validation event, and agent action is recorded as a PROV-O graph: prov:Entity (the data), prov:Activity (what happened), prov:Agent (who did it), prov:wasGeneratedB...

T-03: Policy & Enforcement Layer ODRL (Open Digital Rights Language)W3C standard for expressing data usage policies. CTH uses ODRL to encode: permitted purposes, geographic scope, time limitations, benefit-sharing requirements. ODRL policies are stored as JSO...

T-04: Discovery & AI Access Layer W3C DCAT v3 (Data Catalog Vocabulary)Dataset catalogue standard. CTH publishes a DCAT v3 catalogue at /api/catalogue listing all available climate datasets, their access conditions, formats, and ODRL usage policies. Registere...

EUDR — EU Deforestation Regulation Deadline: 30 December 2026 Large & Medium Operators EU Regulation 2023/1115. Requires operators placing commodities (coffee, cocoa, cattle, soy, palm oil, wood, rubber) on the EU market to prove they are deforestation-free an...

CSRD — Corporate Sustainability Reporting Directive Early Adoption: FY2026 Mandatory: FY2027 EU Directive 2022/2464. Requires large companies to report on sustainability impacts under European Sustainability Reporting Standards (ESRS). Climate-relevant standar...

CBAM — Carbon Border Adjustment Mechanism First Declaration: September 2027 For 2026 Imports EU Regulation 2023/956. Requires EU importers to declare the embedded carbon in imported goods (cement, iron, steel, aluminium, fertilisers, electricity, hydrogen). Co...

ISSB IFRS S2 — Climate-Related Disclosures Brazil CVM: Jan 1 2026 Mexico CNBV: FY2025 IFRS Sustainability Disclosure Standard S2 — Climate-related Disclosures. Mandatory for listed companies in Brazil (CVM Resolution 193) and Mexico (CNBV circular). Aligned wi...

Article 6.4 — Paris Agreement Carbon Credits UNFCCC Mechanism Operationalised 2024 Article 6.4 of the Paris Agreement establishes a UN-supervised carbon crediting mechanism (successor to CDM). Article 6.4 Emission Reductions (A6.4ERs) are the highest-integrity...