Standards Overview

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 governance.
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Layer
Standards
Purpose
CTH Contribution / Notes
1
Identity
W3C DID 1.1 + cth:FPICCredential
Who is acting
CTH-original: FPICCredential as W3C VC
2
Credential Format
W3C VC 2.0 (BBS+) + UNTP DTE/DCC + OID4VP
What is asserted
UNTP maps directly to EUDR Article 9
3
Provenance & Quality
W3C PROV-O + ISO 8000-220:2025 + cth:FieldDataQuality SHACL
How was it measured
CTH-original: EUDR GPS precision + Andean IoT calibration rules
4
Governance Ledger
Append-only Postgres + rolling SHA-256 + KERI anchoring
What decisions were made
5-year persistence; KERI for cross-org verifiability
5
Policy & Enforcement
ODRL + W3C DPV 2.0 + OPA (ODRE pattern) + SHACL
What is allowed
ODRE = ODRL policy evaluated by OPA at runtime
6
Discovery & AI Access
W3C DCAT v3 + OpenAPI 3.1 + llms.txt + JSON-LD context
How to find and query
llms.txt enables direct agent access without scraping
7
Compliance Outputs
EUDR DDS, CSRD ESRS E1/E4, CBAM, ISSB IFRS S2, Art.6
What gets reported
One data pipeline → five regulatory outputs
CTH-Original Contributions
Two standards were created by CTH because no existing specification covers these requirements for LATAM:
cth:FPICCredential
Free Prior and Informed Consent as a W3C Verifiable Credential. The community holds the signing key — not CTH, not the coffee buyer. Revocation is handled by the community. No existing VC type covers FPIC for indigenous territorial data in Colombia.
cth:FieldDataQuality SHACL Profile
SHACL validation shapes for EUDR-specific GPS precision (≥6 decimal places), IDEAM deforestation data vintage (≤24 months), IoT sensor calibration (≤180 days), and Andean GPS lock wait time (≥90 seconds per polygon vertex). ISO 8000-220 covers data quality generically — none of these field-specific thresholds exist in any standard.
ℹ️ The Article 6 / EUDR shared evidence layer is the key commercial innovation: the same UNTP Digital Traceability Event (DTE) that proves deforestation-free status for EUDR serves as the shared evidence layer for an Article 6.4 carbon credit. Two Digital Conformity Credentials (EUDR DDS + carbon credit) against one DTE.