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EIF

ZAYAZ Interoperability & External Integration Framework (EIF)

1. Purpose

The ZAYAZ Interoperability & External Integration Framework (EIF) defines how lineage-verified, assurance-backed, trust-scored sustainability information is exchanged with external systems while preserving provenance, reproducibility, trust intelligence, and governance metadata.

EIF enables interoperability with:

• Regulatory repositories
• Financial disclosure systems
• Product traceability ecosystems
• Assurance networks
• Carbon accounting platforms
• Supply-chain ecosystems
• Digital Product Passport infrastructures
• Federated trust networks

EIF ensures that when information leaves ZAYAZ it remains:

• Verifiable
• Replayable
• Trustworthy
• Auditable
• Governance-compliant

regardless of where the information is consumed.

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2. Position in the Assurance Architecture

2.1. EIF as the External Trust Layer

The ZAYAZ assurance architecture is composed of multiple layers.

Layer	Framework
Lineage	TRACE
Replay & Verification	OARM
Federation	AFLE
Cryptographic Integrity	DAL
Trust Intelligence	AIATI
Trust Scoring	AII
Governance	FAGF
External Exchange	EIF

EIF acts as the external trust distribution layer of the ecosystem.

While TRACE, OARM, AFLE, DAL, AIATI, AII, and FAGF establish trust internally, EIF transports that trust outside the federation without losing:

• lineage
• provenance
• replayability
• trust intelligence
• governance evidence
• assurance status

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2.2. Assurance Export Flow

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3. Design Principles

Principle	Description
Preservation of Trust	Trust metadata must survive export.
Lineage Integrity	Provenance cannot be detached from exported information.
Replayability	Assurance evidence must remain independently reproducible.
Cryptographic Verifiability	DAL references remain externally verifiable.
Federation Compatibility	Supports AFLE exchange standards.
Vendor Neutrality	Open standards wherever possible.
Auditability	Every export is logged and reproducible.
Regulatory Alignment	Supports ESRS, CSRD, ISSB, IFRS, GRI and DPP ecosystems.

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4. Core Architecture

4.1. Interoperability Spine

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4.2. Core Components

Component	Function
Semantic Mapping Engine (SME)	Maps ZAYAZ concepts to external schemas.
Assurance Packaging Engine (APE)	Packages assurance evidence and trust artifacts.
Credential Hub	Generates verifiable credentials and attestations.
Adapter Library	Connectors to external systems.
Audit Bridge	Provides replay and verification APIs.
Federation Exchange Gateway	Cross-ECO assurance exchange.
Export Registry	Tracks all outbound interoperability events.

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5. Exportable Assurance Artifacts

EIF exports more than datasets.

It exports trust.

5.1. Supported Assurance Artifacts

Artifact	Source
Assurance Credentials	EIF
Carbon Passports	Carbon Passport Engine
Trust Certificates	TrustGate
Replay Verification Records	OARM
Lineage Proof Packages	TRACE
DAL Proof Bundles	DAL
Federated Attestations	AFLE
Assurance Intelligence Records	AIATI
Assurance Intelligence Scores	AII
Governance Certifications	FAGF

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5.2. Assurance Evidence Package (AEP)

The Assurance Evidence Package is the canonical export format for high-assurance exchanges.

It bundles:

• lineage proofs
• replay evidence
• DAL anchors
• trust certificates
• governance certifications
• federation attestations
• assurance intelligence metadata

into a single portable assurance package.

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6. Export Models

6.1. Structured Dataset Export

Used for:

• ESRS
• IFRS
• ISSB
• GRI
• CDP

submissions.

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6.2 Assurance Credential Export

Used when assurance evidence must accompany disclosures.

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6.3. Digital Product Passport Export

Used for:

• DPP
• Product traceability
• Product carbon reporting
• Supply-chain transparency

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6.4. Assurance Evidence Package Export

Used for:

• auditors
• regulators
• certification bodies
• assurance exchanges
• federation verification

where full assurance provenance is required.

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7. Assurance Credentials

7.1. Purpose

Assurance Credentials provide portable, cryptographically verifiable evidence that exported sustainability information originated from a verified ZAYAZ assurance chain.

They enable external consumers to verify:

• data origin
• lineage completeness
• trust scores
• replay verification status
• governance certifications
• cryptographic integrity

without requiring direct access to the originating ZAYAZ tenant.

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7.2. Verifiable Credential Structure

verifiable-credential-structure.jsonGitHub ↗

{
  "@context": [
    "https://www.w3.org/2018/credentials/v1",
    "https://schema.zayaz.io/assurance/v2"
  ],
  "id": "urn:vc:EIF-2026-000123",
  "type": [
    "VerifiableCredential",
    "ZAYAZAssuranceCredential"
  ],
  "issuer": "did:zayaz:ECO-A123",
  "issuanceDate": "2026-01-15T12:00:00Z",
  "credentialSubject": {
    "eco_number": "ECO-A123",
    "signal_csi": "MICE.InvoiceEmissions.OUTPUT.CO2E.1_0",
    "trust_score": 0.93,
    "trace_ref": "TRACE-2026-00045",
    "oarm_ref": "OARM-2026-00112",
    "afle_ref": "AFLE-2026-00018",
    "dal_ref": "DAL-2026-001245",
    "aiati_ref": "AIATI-2026-00007",
    "aii_score": 92.4,
    "fagf_certification": "FAGF-CERT-L2",
    "verification_status": "verified"
  },
  "proof": {
    "type": "Ed25519Signature2020",
    "created": "2026-01-15T12:00:00Z",
    "verificationMethod": "did:zayaz:ECO-A123#trustgate-key",
    "proofPurpose": "assertionMethod",
    "jws": "eyJhbGciOiJFZERTQSJ9..."
  }
}

---

7.3. Credential Verification

External consumers shall be able to verify:

Validation	Purpose
Signature Validation	Verify issuer authenticity
DID Resolution	Verify credential owner
DAL Validation	Verify anchored integrity
Replay Verification	Verify reproducibility
Trust Validation	Verify trust score integrity
Governance Validation	Verify FAGF certification status

---

8. Semantic Mapping Engine (SME)

8.1. Purpose

The Semantic Mapping Engine translates ZAYAZ-native concepts into external reporting and interoperability standards.

The SME preserves:

• meaning
• units
• lineage
• trust metadata
• assurance metadata

during export.

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8.2. Mapping Architecture

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8.3. Mapping Registry

Field	Description
source_csi	Internal CSI identifier
target_framework	External framework
target_field	Target field identifier
transformation_logic	Mapping rules
version	Mapping version
approved_by	Governance authority

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8.4. Example Mapping

ZAYAZ CSI	ESRS	ISSB
MICE.InvoiceEmissions.OUTPUT.CO2E.1_0	E1-6	IFRS S2 Climate Metrics
DAVE.SupplierTrust.OUTPUT.SCORE.1_0	Governance Disclosure	Governance Metrics
CarbonPassport.CO2E.Total	E1-6	Scope Emissions

---

8.5. Framework Mapping Registry

The Semantic Mapping Engine (SME) maintains a versioned mapping registry linking ZAYAZ CSI signals and SSSR schemas to external disclosure frameworks.

Mappings support:

• ESRS
• IFRS S1
• IFRS S2
• ISSB
• GRI
• CDP
• Digital Product Passport schemas
• sector-specific standards

All mappings are versioned, governed, and replayable.

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8.6. Mapping Registry Structure

Field	Description
source_csi	Internal CSI signal
source_schema	SSSR schema identifier
target_framework	External framework
target_reference	Disclosure reference
transformation_rule	Mapping logic
confidence	Mapping confidence
version	Mapping version
approved_by	Governance authority

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8.7. Example Framework Mapping Registry

ESRS Tag	IFRS / ISSB Reference	Description
E1-6	IFRS S2 §B16	GHG emissions intensity metrics
E2-4	IFRS S1 §A22	Energy consumption and renewable share
S1-1	IFRS S1 §B3	Workforce composition
G1-2	IFRS S1 §B4	Governance structure and oversight
E5-3	GRI 305-5	Scope 3 emission reductions achieved

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8.8. Mapping Example

sme-mapping-example.jsonGitHub ↗

{
  "source_csi": "MICE.InvoiceEmissions.OUTPUT.CO2E.1_0",

  "target_framework": "IFRS_S2",

  "target_reference": "IFRS S2 §B16",

  "transformation_rule": "direct",

  "unit_mapping": {
    "source": "kgCO2e",
    "target": "tCO2e"
  },

  "version": "2.1.0",

  "approved_by": "FAGF.MappingCouncil"
}

---

9. Financial Disclosure Alignment

9.1. Objective

EIF ensures that sustainability metrics can be consumed by:

• IFRS reporting systems
• ISSB reporting systems
• ESG analytics providers
• financial disclosure platforms
• investor relations systems

without losing assurance context.

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9.2. Alignment Matrix

ZAYAZ Concept	ESRS	ISSB	IFRS
Carbon Passport	E1	S2	Climate Disclosure
Trust Score	Governance	Governance	Governance
Replay Verification	Assurance	Assurance	Audit Support
DAL Proof	Evidence	Evidence	Audit Evidence
AII Score	Performance Indicator	Performance Indicator	KPI

---

9.3. Financial Assurance Package

The Financial Assurance Package (FAP) combines:

• disclosure values
• trust scores
• lineage proofs
• DAL references
• replay evidence
• governance certifications

into a regulator-ready export package.

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10. Digital Product Passport Integration

10.1. Purpose

EIF provides interoperability with European Digital Product Passport ecosystems.

This allows Carbon Passports and sustainability disclosures to become part of product-level traceability infrastructures.

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10.2. DPP Integration Model

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10.3. Exportable DPP Fields

Field	Source
Product Identifier	DPP Registry
ECO Number	Federation Registry
Carbon Footprint	Carbon Passport
Lineage Reference	TRACE
DAL Reference	DAL
Verification Status	OARM
Trust Score	TrustGate
Federation Attestation	AFLE

---

10.4. Carbon Passport Export Example

carbon-passport-export-example.jsonGitHub ↗

{
  "passport_id": "CP-2026-001",
  "eco_number": "ECO-A123",
  "product_id": "SKU-000987",
  "co2e": {
    "value": 12450,
    "unit": "kgCO2e"
  },
  "trust_score": 0.93,
  "trace_ref": "TRACE-2026-00045",
  "dal_ref": "DAL-2026-001245",
  "verification_status": "verified"
}

---

11. Supported External Ecosystems

11.1. Regulatory & Reporting Ecosystems

Ecosystem	Purpose
ESAP	European Single Access Point for CSRD/ESRS disclosures
EFRAG Data Exchange	ESRS-aligned sustainability reporting
National Regulatory Repositories	Jurisdiction-specific ESG submissions
ISSB / IFRS S1-S2	Sustainability-related financial disclosures
GRI	Sustainability reporting standards
CDP	Environmental disclosure and benchmarking

---

11.2. Product & Supply Chain Ecosystems

Ecosystem	Purpose
EU Digital Product Passport (DPP)	Product-level sustainability and circularity transparency
EPCIS 2.0	Supply-chain event traceability
Catena-X	Automotive and industrial data ecosystems
PACT Pathfinder	Product carbon footprint exchange
EPREL	Energy-related product compliance
ECHA SCIP	Hazardous substances and circularity reporting

---

11.3. Trust & Federation Ecosystems

Ecosystem	Purpose
Gaia-X	Federated trust and data sovereignty
Open Supply Hub	Supplier transparency and sourcing intelligence
EDCI	Digital credential exchange
Industry Assurance Networks	Third-party verification and assurance exchange

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12. EIF Adapter Library

The EIF Adapter Library provides standardized connectors for exporting lineage-verified, assurance-backed information to external ecosystems while preserving trust, provenance, replayability, and governance metadata.

Target System	Integration Mechanism	Supported Data	Assurance Artifacts
ESAP (EU Single Access Point)	XBRL-based upload via EIF ESAP Adapter	ESRS disclosures (CSRD-aligned)	DAL proofs, AII scores, Assurance Credentials
EFRAG Data Portal	ESRS-compliant JSON/XBRL export	ESRS datapoints and sustainability disclosures	Replay evidence, DAL references
CDP	JSON-LD + CSV Adapter	Carbon, energy, waste, biodiversity metrics	Trust Certificates, Assurance Evidence Packages
GRI	JSON-LD + CSV Adapter	Sustainability disclosures and KPI exports	Trust Certificates, Replay Evidence
ISSB (IFRS S1/S2)	IFRS-compliant JSON schema	Climate-related financial disclosures	Assurance Evidence Packages
EU Digital Product Passport (DPP)	JSON-LD + EPAIIL export	Product carbon footprints, circularity data, supply-chain attestations	Carbon Passports, AFLE Attestations
EPCIS 2.0	Event-based interoperability API	Product and supply-chain traceability events	Lineage Packages, DAL Proofs
EPREL	XML-based compliance payload	Energy efficiency disclosures	Verification Credentials
ECHA SCIP	JSON exchange via EIF SCIP Adapter	Hazardous materials and circularity declarations	Compliance Attestations
Gaia-X	Federated trust exchange APIs	Trust metadata, federation credentials	AFLE Attestations, DAL Proofs
Catena-X	Supply-chain interoperability APIs	Product traceability and sustainability records	Carbon Passports, Lineage Packages
PACT Pathfinder	Product carbon exchange APIs	Product carbon footprint calculations	Carbon Passports, Verification Credentials
Open Supply Hub	REST/JSON synchronization	Supplier and sourcing metadata	Trust Certificates
EDCI	Verifiable Credential exchange	Assurance Credentials	W3C Verifiable Credentials
Auditor Networks	Secure Assurance Exchange APIs	Replay artifacts, audit evidence, verification records	Assurance Evidence Packages
Regulatory Verification Gateways	Verification APIs	Compliance evidence and assurance metadata	DAL Proofs, Governance Certifications

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13. Federated Assurance Exchange

13.1. Purpose

EIF serves as the external exchange layer for the federated assurance ecosystem established by AFLE.

It enables independent organizations, auditors, regulators, industry associations, and assurance networks to exchange verifiable assurance artifacts without requiring direct database access to each other.

All exchanged artifacts preserve:

• ECO Number references
• CSI lineage references
• CMI artifact references
• DAL proof references
• replay evidence
• trust certificates
• governance certifications

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13.2. Federated Exchange Architecture

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13.3. Federated Exchange Objects

Exchange Object	Source
Federated Attestation	AFLE
Carbon Passport	Carbon Passport Engine
Assurance Credential	EIF
Assurance Evidence Package	EIF
DAL Proof Bundle	DAL
Replay Verification Record	OARM
Governance Certification	FAGF
Trust Certificate	TrustGate

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13.4. Cross-ECO Verification

Every exchanged artifact must be independently verifiable.

Verification shall include:

1. Signature validation
2. DAL proof validation
3. Replay verification status validation
4. Trust certificate validation
5. Governance certification validation

No artifact should require trust in the originating organization.

Trust is derived from evidence.

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14. Governance-Controlled Exports

14.1. Purpose

Not all information may be exported.

EIF therefore integrates directly with FAGF governance controls.

Every export operation is evaluated against federation governance policies before execution.

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14.2. Governance Validation Workflow

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14.3. Governance Validation Matrix

Control	Source
Export Policy Validation	FAGF
Trust Threshold Validation	TrustGate
AI Export Policy Validation	AIATI
Replay Validation	OARM
Lineage Completeness Validation	TRACE
Federation Certification Validation	AFLE
Integrity Validation	DAL

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14.4. Example Policy

example-policy.jsonGitHub ↗

{
  "policy_id": "FAGF-EXP-004",
  "minimum_trust_score": 0.85,
  "require_dal_anchor": true,
  "require_replay_validation": true,
  "require_federation_attestation": true,
  "require_governance_certification": true
}

---

15. Security Architecture

15.1. Security Principles

EIF inherits the security model of the assurance stack.

Every export operation must satisfy:

• authentication
• authorization
• integrity
• non-repudiation
• auditability

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15.2. Security Layers

Layer	Mechanism
Identity	DID / OAuth2
Authorization	Policy-Based Access Control
Integrity	DAL Anchoring
Confidentiality	Encryption-at-Rest and In-Transit
Auditability	Export Registry
Non-Repudiation	Digital Signatures

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15.3. Digital Signature Requirements

All exported assurance artifacts shall support:

• Ed25519
• ECDSA
• W3C Verifiable Credential signatures

Future cryptographic standards may be introduced through versioned adapters.

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16. Export Registry

16.1. Purpose

Every outbound exchange event is permanently recorded.

This ensures:

• auditability
• replayability
• governance oversight
• compliance traceability

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16.2. Export Log Structure

export-log-structure.jsonGitHub ↗

{
  "export_id": "EXP-2026-001245",
  "timestamp": "2026-01-15T18:30:00Z",
  "eco_number": "ECO-A123",
  "target_system": "ESAP",
  "artifact_type": "AssuranceEvidencePackage",
  "trace_ref": "TRACE-2026-00045",
  "oarm_ref": "OARM-2026-00112",
  "afle_ref": "AFLE-2026-00018",
  "dal_ref": "DAL-2026-001245",
  "aiati_ref": "AIATI-2026-00007",
  "fagf_policy_ref": "FAGF-EXP-POLICY-4",
  "export_confidence": 0.98,
  "status": "completed"
}

---

16.3. Registry Retention

Record Type	Retention
Regulatory Exports	10 Years Minimum
Assurance Exports	10 Years Minimum
Carbon Passport Exports	Product Lifecycle + 10 Years
Governance Decisions	Permanent
DAL References	Permanent

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17. External APIs

17.1. Assurance Credential API

GET /eif/credentials/{credential_id}

Returns:

• credential metadata
• trust information
• verification status
• DAL references

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17.2. Assurance Evidence API

GET /eif/evidence/{package_id}

Returns:

• replay evidence
• lineage proofs
• trust certificates
• governance certifications

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17.3. Carbon Passport API

GET /eif/passports/{passport_id}

Returns:

• carbon passport
• verification status
• federation attestations

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17.4. Verification API

POST /eif/verify

Validates:

• signatures
• DAL references
• replay evidence
• governance certifications

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18. Compliance Alignment

18.1. Regulatory Alignment

Framework	Coverage
CSRD	Full
ESRS	Full
IFRS S1	Full
IFRS S2	Full
ISSB	Full
GRI	Full
CDP	Full
EU DPP	Full
ISO 14064-1	Supported
ISO 14064-3	Supported
ISO 42001	Supported

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18.2. Assurance Alignment

Assurance Artifact	External Equivalent
TRACE Record	Provenance Chain
OARM Replay	Reperformance Procedure
DAL Proof	Audit Evidence
AFLE Attestation	Third-Party Assurance Statement
AIATI Record	Trust Intelligence Evidence
AII Score	Trust & Integrity Indicator
FAGF Certification	Governance Accreditation

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19. Roadmap

Phase 1

Core ESG data export.

Phase 2

Carbon Passport interoperability.

Phase 3

Digital Product Passport integration.

Phase 4

Verifiable Credential exports.

Phase 5

Federated Assurance Exchange Network.

Phase 6

Cross-Regulator Trust Fabric.

Phase 7

Autonomous Assurance Credential Federation.

Phase 8

Global ESG Trust Infrastructure.

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20. Benefits

Benefit	Description
Trust Preservation	Assurance metadata survives export.
Auditability	All exports are reproducible and verifiable.
Regulatory Readiness	Supports major disclosure frameworks.
Federation Compatibility	Enables Cross-ECO assurance exchange.
Interoperability	Connects ZAYAZ to external ecosystems.
Transparency	External parties can validate evidence independently.
Scalability	Supports global assurance networks.
Future-Proofing	Compatible with emerging trust infrastructures.

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21. Summary

The ZAYAZ Interoperability & External Integration Framework (EIF) is the external trust distribution layer of the ZAYAZ assurance architecture.

While TRACE, OARM, AFLE, DAL, AIATI, AII, and FAGF establish trust within the federation, EIF enables that trust to travel beyond organizational boundaries without losing integrity, provenance, replayability, governance context, or assurance evidence.

EIF transforms sustainability data exchange from a simple data-transfer problem into a verifiable trust-transfer mechanism.

By combining:

• lineage verification (TRACE),
• replay validation (OARM),
• federated attestations (AFLE),
• cryptographic anchoring (DAL),
• assurance intelligence (AIATI),
• trust scoring (AII),
• governance oversight (FAGF),

and exporting them through standardized assurance credentials, evidence packages, carbon passports, and interoperability adapters, EIF establishes the foundation for a globally interoperable ESG trust ecosystem.

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