🎫 QR Codes & Verifiable Credentials
Robot authentication certificates and work record verification.
Robot Authentication Certificate
{
"@context": [
"https://www.w3.org/2018/credentials/v1",
"https://wia.org/credentials/construction-robot/v1"
],
"type": ["VerifiableCredential", "ConstructionRobotCertificate"],
"issuer": "did:wia:certification-authority",
"issuanceDate": "2025-01-15T00:00:00Z",
"credentialSubject": {
"id": "did:wia:robot:CR-BRICK-001",
"robotType": "bricklaying",
"manufacturer": "RoboCon Industries",
"model": "BrickMaster-3000",
"serialNumber": "BM3000-2025-0142",
"certifications": [
"ISO-8373-Safety",
"CE-Construction-Equipment",
"WIA-CITY-007-Compliance"
],
"capabilities": {
"bricksPerHour": 600,
"precisionMM": 0.5,
"autonomyLevel": 4
},
"maintenanceHistory": {
"lastService": "2025-12-20T00:00:00Z",
"nextService": "2026-01-20T00:00:00Z",
"totalOperatingHours": 2840
}
},
"proof": {
"type": "Ed25519Signature2020",
"created": "2025-01-15T00:00:00Z",
"proofPurpose": "assertionMethod",
"verificationMethod": "did:wia:certification-authority#key-1",
"proofValue": "z5h8k2m..."
}
}
Work Record Verification
{
"@context": "https://wia.org/credentials/work-record/v1",
"type": "ConstructionWorkRecord",
"robotId": "CR-BRICK-001",
"project": {
"id": "PROJ-2025-001",
"name": "Smart City Tower",
"contractor": "BuildTech Corporation"
},
"workSession": {
"startTime": "2025-12-25T08:00:00Z",
"endTime": "2025-12-25T16:00:00Z",
"duration": "8 hours"
},
"performance": {
"bricksLaid": 4800,
"accuracy": 0.98,
"efficiency": 0.92,
"defects": 12,
"rework": 2
},
"verification": {
"inspector": "John Smith",
"inspectorId": "INSP-2025-045",
"timestamp": "2025-12-25T17:00:00Z",
"signature": "0x7d8a9b..."
}
}
Generate Robot Certificate
Verify Work Record