{
  "card_id": "ATC-TEST-VALID-002",
  "status": "active",
  "payload": {
    "card_id": "ATC-TEST-VALID-002",
    "schema_version": "2.0.0",
    "agent_id": "test-agent-portfolio",
    "agent_name": "Second Accept Card Agent",
    "identity": {
      "public_key": "MCowBQYDK2VwAyEAvtRhFInVXf939xGvD9i6dhBWAAMFjUAA66Qn2KzEWsg=",
      "key_algorithm": "Ed25519"
    },
    "trust": {
      "sentinel_review_score": 9,
      "sentinel_score": 9,
      "audit_layers_passed": {
        "L1.5": true,
        "L2.5": true
      },
      "composite_trust": 9,
      "risk_level": "low"
    },
    "capabilities": {
      "provides": [
        "search",
        "read",
        "translate"
      ],
      "protocol_language": "a2a",
      "translate": true
    },
    "payment": {
      "method": "none",
      "wallet_address": null
    },
    "metadata": {
      "issued_at": "2026-09-09T00:00:00Z",
      "expires_at": "2028-06-30T00:00:00Z",
      "issuer": "MarketNow Sentinel CA"
    }
  },
  "signature": {
    "algorithm": "Ed25519 (RFC 8032)",
    "value": "c900a0c2ec74aac8e4e067236177e13f6cbb7d9cbac6e22b635dfa1c0f404fb07cd02df763b90cdbd348806cd9cbed92a03bb4ad057c6bb357ed7cbf3b5d4708",
    "signed_by": "MarketNow Sentinel Test CA 2 (throwaway, vectors-only, private key PUBLISHED)",
    "signed_at": "2026-09-09T00:00:00Z",
    "canonical_json": "RFC_8785_JCS",
    "ca_key_id": "MCowBQYDK2VwAyEAvtRhFInVXf939xGvD9i6dhBWAAMFjUAA66Qn2KzEWsg=",
    "evidence_hash": "sha256:valid_test",
    "policy_version": "2.0.0"
  }
}