{
  "generatedFrom": "Payments Signal canonical architecture registry",
  "reviewDate": "2026-07-23",
  "blueprint": {
    "id": "architecture-security-resilience",
    "slug": "payment-security-trust-observability-continuity",
    "title": "Payment security, trust boundaries, entitlements, observability, continuity, and recovery",
    "shortTitle": "Security & resilience",
    "family": "controls",
    "summary": "Treat identity, change, secrets, network boundaries, telemetry, continuity, and payment-safe recovery as one control architecture.",
    "audience": "Security, payment, cloud, infrastructure, operational-resilience, risk, audit, and service-management architects.",
    "reviewDate": "2026-07-23",
    "versionLabel": "Payments Signal reference architecture v1",
    "status": "current",
    "nodes": [
      {
        "id": "sec-identities",
        "title": "Workforce, workload, and participant identity",
        "kind": "security",
        "summary": "Issues and verifies distinct identities for people, services, devices, counterparties, and network participants.",
        "responsibilities": [
          "Use the right identity type for each actor",
          "Bind authentication strength to payment risk"
        ],
        "owner": "Identity and access management",
        "inputs": [
          "Authorised business instruction and correlated state"
        ],
        "outputs": [
          "Versioned result, status, and audit evidence"
        ],
        "interfaceContracts": [
          "Versioned workforce, workload, and participant identity contract",
          "Stable identifier, state, error, and audit contract"
        ],
        "controls": [
          "Phishing-resistant privileged access",
          "Certificate lifecycle",
          "No shared production identity"
        ],
        "failureModes": [
          "Stolen credential",
          "Expired certificate",
          "Orphan service account"
        ],
        "recovery": [
          "Revoke and rotate",
          "Contain affected sessions",
          "Re-establish trust from verified identity"
        ],
        "lenses": [
          "applications",
          "interfaces",
          "data",
          "controls",
          "operations",
          "resilience"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Protection and identification",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          },
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "dataClassification": [
          "Payment, message, status, and operational metadata"
        ],
        "nonFunctionalRequirements": [
          "Durable correlation through stable business and technical identifiers",
          "Capacity and availability matched to the service-level objective",
          "Auditable state changes, configuration, and operator actions"
        ]
      },
      {
        "id": "sec-entitlements",
        "title": "Entitlements and payment authority",
        "kind": "control",
        "summary": "Translates job, service, participant, amount, product, and context into an allowed payment action.",
        "responsibilities": [
          "Separate create, approve, release, repair, and administer authority",
          "Apply least privilege and segregation of duties"
        ],
        "owner": "Payment control owner and access governance",
        "inputs": [
          "Authorised business instruction and correlated state"
        ],
        "outputs": [
          "Versioned result, status, and audit evidence"
        ],
        "interfaceContracts": [
          "Versioned entitlements and payment authority contract",
          "Stable identifier, state, error, and audit contract"
        ],
        "controls": [
          "Maker-checker",
          "Context and amount limits",
          "Periodic recertification",
          "Emergency access review"
        ],
        "failureModes": [
          "Self-approval",
          "Dormant privilege",
          "Service can bypass payment gate"
        ],
        "recovery": [
          "Remove access",
          "Review affected actions",
          "Correct the control path before reopening"
        ],
        "lenses": [
          "applications",
          "interfaces",
          "data",
          "controls",
          "operations",
          "resilience"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "dataClassification": [
          "Payment, message, status, and operational metadata"
        ],
        "nonFunctionalRequirements": [
          "Durable correlation through stable business and technical identifiers",
          "Capacity and availability matched to the service-level objective",
          "Auditable state changes, configuration, and operator actions"
        ]
      },
      {
        "id": "sec-boundary",
        "title": "API, message, file, and network security boundary",
        "kind": "gateway",
        "summary": "Authenticates, authorises, validates, rate-limits, and records traffic crossing each trust boundary.",
        "responsibilities": [
          "Protect every ingress and egress contract",
          "Keep external, partner, user, and internal trust zones distinct"
        ],
        "owner": "Platform and network security",
        "inputs": [
          "Authorised business instruction and correlated state"
        ],
        "outputs": [
          "Versioned result, status, and audit evidence"
        ],
        "interfaceContracts": [
          "Versioned api, message, file, and network security boundary contract",
          "Stable identifier, state, error, and audit contract"
        ],
        "controls": [
          "Mutual authentication",
          "Integrity and replay control",
          "Schema and size limits",
          "Denial-of-service protection"
        ],
        "failureModes": [
          "Spoofed participant",
          "Replay",
          "Malicious file",
          "Boundary unavailable"
        ],
        "recovery": [
          "Reject before business processing",
          "Isolate and recover the affected channel",
          "Use tested alternate paths only"
        ],
        "lenses": [
          "applications",
          "interfaces",
          "data",
          "controls",
          "operations",
          "resilience"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-pfmi",
              "locator": "Principles 17 and 22",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO Principles for financial market infrastructures"
          },
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Protection, detection, and response",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          }
        ],
        "dataClassification": [
          "Payment, message, status, and operational metadata"
        ],
        "nonFunctionalRequirements": [
          "Durable correlation through stable business and technical identifiers",
          "Capacity and availability matched to the service-level objective",
          "Auditable state changes, configuration, and operator actions"
        ]
      },
      {
        "id": "sec-secrets",
        "title": "Cryptographic keys, secrets, and signing service",
        "kind": "security",
        "summary": "Protects key material and performs controlled signing, verification, encryption, and rotation.",
        "responsibilities": [
          "Keep raw key material outside application memory where required",
          "Prove key use, version, and authority"
        ],
        "owner": "Cryptographic security and key custodians",
        "inputs": [
          "Authorised business instruction and correlated state"
        ],
        "outputs": [
          "Versioned result, status, and audit evidence"
        ],
        "interfaceContracts": [
          "Versioned cryptographic keys, secrets, and signing service contract",
          "Stable identifier, state, error, and audit contract"
        ],
        "controls": [
          "Hardware-backed control where required",
          "Dual control",
          "Rotation and revocation",
          "Usage audit"
        ],
        "failureModes": [
          "Key compromise",
          "Signing unavailable",
          "Expired trust chain"
        ],
        "recovery": [
          "Revoke and rotate",
          "Stop affected message release",
          "Revalidate trust and replay only authorised work"
        ],
        "lenses": [
          "applications",
          "interfaces",
          "data",
          "controls",
          "operations",
          "resilience"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Protection and response",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          },
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "dataClassification": [
          "Payment, message, status, and operational metadata"
        ],
        "nonFunctionalRequirements": [
          "Durable correlation through stable business and technical identifiers",
          "Capacity and availability matched to the service-level objective",
          "Auditable state changes, configuration, and operator actions"
        ]
      },
      {
        "id": "sec-platform",
        "title": "Hardened payment runtime and data stores",
        "kind": "infrastructure",
        "summary": "Runs payment services with isolation, secure configuration, immutable deployment evidence, backup, and recoverable state.",
        "responsibilities": [
          "Separate environments and duties",
          "Protect payment, personal, credential, and audit data by classification"
        ],
        "owner": "Platform engineering and data owners",
        "inputs": [
          "Authorised business instruction and correlated state"
        ],
        "outputs": [
          "Versioned result, status, and audit evidence"
        ],
        "interfaceContracts": [
          "Versioned hardened payment runtime and data stores contract",
          "Stable identifier, state, error, and audit contract"
        ],
        "controls": [
          "Approved image and dependency",
          "Encrypted storage",
          "Patch and configuration evidence",
          "Backup integrity"
        ],
        "failureModes": [
          "Compromised runtime",
          "Configuration drift",
          "Corrupt backup"
        ],
        "recovery": [
          "Isolate workload",
          "Restore from a verified point",
          "Reconcile payment state before traffic resumes"
        ],
        "lenses": [
          "applications",
          "interfaces",
          "data",
          "controls",
          "operations",
          "resilience"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Protection and recovery",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          },
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "dataClassification": [
          "Payment, message, status, and operational metadata"
        ],
        "nonFunctionalRequirements": [
          "Durable correlation through stable business and technical identifiers",
          "Capacity and availability matched to the service-level objective",
          "Auditable state changes, configuration, and operator actions"
        ]
      },
      {
        "id": "sec-observability",
        "title": "Security and payment observability",
        "kind": "data-store",
        "summary": "Correlates logs, metrics, traces, business events, control outcomes, and settlement checkpoints without copying secrets or full payment data unnecessarily.",
        "responsibilities": [
          "Detect abnormal technical and payment behaviour",
          "Keep telemetry useful, minimised, time-aligned, and tamper-evident"
        ],
        "owner": "Security operations and payment service management",
        "inputs": [
          "Authorised business instruction and correlated state"
        ],
        "outputs": [
          "Versioned result, status, and audit evidence"
        ],
        "interfaceContracts": [
          "Versioned security and payment observability contract",
          "Stable identifier, state, error, and audit contract"
        ],
        "controls": [
          "Clock synchronisation",
          "Immutable audit",
          "Sensitive-data minimisation",
          "Alert ownership"
        ],
        "failureModes": [
          "Blind spot",
          "False alert flood",
          "Sensitive data in logs"
        ],
        "recovery": [
          "Restore telemetry",
          "Contain and redact exposed data",
          "Reconstruct from retained business evidence"
        ],
        "lenses": [
          "applications",
          "interfaces",
          "data",
          "controls",
          "operations",
          "resilience"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Detection and situational awareness",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          },
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "dataClassification": [
          "Payment, message, status, and operational metadata"
        ],
        "nonFunctionalRequirements": [
          "Durable correlation through stable business and technical identifiers",
          "Capacity and availability matched to the service-level objective",
          "Auditable state changes, configuration, and operator actions"
        ]
      },
      {
        "id": "sec-continuity",
        "title": "Continuity, backup, and recovery orchestration",
        "kind": "operations",
        "summary": "Coordinates alternate capacity, dependency recovery, queue control, data restoration, and staged service reopening.",
        "responsibilities": [
          "Define recovery order and dependency map",
          "Protect payment correctness while restoring service"
        ],
        "owner": "Operational resilience and service owner",
        "inputs": [
          "Authorised business instruction and correlated state"
        ],
        "outputs": [
          "Versioned result, status, and audit evidence"
        ],
        "interfaceContracts": [
          "Versioned continuity, backup, and recovery orchestration contract",
          "Stable identifier, state, error, and audit contract"
        ],
        "controls": [
          "Tested recovery objective",
          "Isolated recovery copy",
          "Queue and ledger checkpoint",
          "Business validation"
        ],
        "failureModes": [
          "Failover duplicates payments",
          "Dependency recovers out of order",
          "Backup cannot restore"
        ],
        "recovery": [
          "Freeze replay",
          "Recover to a consistent boundary",
          "Reconcile before staged reopen"
        ],
        "lenses": [
          "applications",
          "interfaces",
          "data",
          "controls",
          "operations",
          "resilience"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-pfmi",
              "locator": "Principle 17",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO Principles for financial market infrastructures"
          },
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Response, recovery, testing, and learning",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          }
        ],
        "dataClassification": [
          "Payment, message, status, and operational metadata"
        ],
        "nonFunctionalRequirements": [
          "Durable correlation through stable business and technical identifiers",
          "Capacity and availability matched to the service-level objective",
          "Auditable state changes, configuration, and operator actions"
        ]
      },
      {
        "id": "sec-governance",
        "title": "Risk, change, testing, and assurance",
        "kind": "operations",
        "summary": "Owns threat, control, dependency, test, exception, incident, and improvement evidence.",
        "responsibilities": [
          "Assess changes and third parties",
          "Test cyber, continuity, fraud, access, and payment-safe recovery"
        ],
        "owner": "Payment risk, security governance, architecture, and audit",
        "inputs": [
          "Authorised business instruction and correlated state"
        ],
        "outputs": [
          "Versioned result, status, and audit evidence"
        ],
        "interfaceContracts": [
          "Versioned risk, change, testing, and assurance contract",
          "Stable identifier, state, error, and audit contract"
        ],
        "controls": [
          "Independent assurance",
          "Change approval",
          "Penetration and resilience testing",
          "Exception expiry"
        ],
        "failureModes": [
          "Risk accepted without owner",
          "Test excludes settlement and reconciliation",
          "Known weakness never closes"
        ],
        "recovery": [
          "Escalate and time-bound",
          "Retest end to end",
          "Track corrective action to evidence"
        ],
        "lenses": [
          "applications",
          "interfaces",
          "data",
          "controls",
          "operations",
          "resilience"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Governance, testing, and learning",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          },
          {
            "ref": {
              "sourceId": "bis-cpmi-pfmi",
              "locator": "Principles 2 and 17",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO Principles for financial market infrastructures"
          }
        ],
        "dataClassification": [
          "Payment, message, status, and operational metadata"
        ],
        "nonFunctionalRequirements": [
          "Durable correlation through stable business and technical identifiers",
          "Capacity and availability matched to the service-level objective",
          "Auditable state changes, configuration, and operator actions"
        ]
      }
    ],
    "interfaces": [
      {
        "id": "sec-e1",
        "from": "sec-identities",
        "to": "sec-entitlements",
        "title": "Authenticated identity and context",
        "kind": "control",
        "mode": "synchronous",
        "purpose": "Supply verified human, service, device, or participant identity.",
        "failureBehaviour": "Deny unknown, expired, or weakly authenticated identity.",
        "evidence": [
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "controls": [
          "Authentication and authorisation",
          "Integrity and replay protection",
          "Correlation and audit evidence"
        ],
        "lenses": [
          "interfaces",
          "data",
          "ledger",
          "controls",
          "operations",
          "resilience"
        ],
        "dataClassification": [
          "Payment instruction, status, and correlation metadata"
        ]
      },
      {
        "id": "sec-e2",
        "from": "sec-entitlements",
        "to": "sec-boundary",
        "title": "Authorised payment capability",
        "kind": "control",
        "mode": "synchronous",
        "purpose": "Constrain which interface and action the identity may use.",
        "failureBehaviour": "Reject unauthorised actions before payload processing.",
        "evidence": [
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "controls": [
          "Authentication and authorisation",
          "Integrity and replay protection",
          "Correlation and audit evidence"
        ],
        "lenses": [
          "interfaces",
          "data",
          "ledger",
          "controls",
          "operations",
          "resilience"
        ],
        "dataClassification": [
          "Payment instruction, status, and correlation metadata"
        ]
      },
      {
        "id": "sec-e3",
        "from": "sec-secrets",
        "to": "sec-boundary",
        "title": "Signing and trust service",
        "kind": "control",
        "mode": "synchronous",
        "purpose": "Sign or verify the boundary exchange under current keys.",
        "failureBehaviour": "Stop release when signature or trust status is uncertain.",
        "evidence": [
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "controls": [
          "Authentication and authorisation",
          "Integrity and replay protection",
          "Correlation and audit evidence"
        ],
        "lenses": [
          "interfaces",
          "data",
          "ledger",
          "controls",
          "operations",
          "resilience"
        ],
        "dataClassification": [
          "Payment instruction, status, and correlation metadata"
        ]
      },
      {
        "id": "sec-e4",
        "from": "sec-boundary",
        "to": "sec-platform",
        "title": "Validated payment traffic",
        "kind": "message",
        "mode": "asynchronous",
        "purpose": "Admit only authenticated, authorised, intact, bounded traffic.",
        "failureBehaviour": "Quarantine invalid or replayed traffic.",
        "evidence": [
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "controls": [
          "Authentication and authorisation",
          "Integrity and replay protection",
          "Correlation and audit evidence"
        ],
        "lenses": [
          "interfaces",
          "data",
          "ledger",
          "controls",
          "operations",
          "resilience"
        ],
        "dataClassification": [
          "Payment instruction, status, and correlation metadata"
        ]
      },
      {
        "id": "sec-e5",
        "from": "sec-platform",
        "to": "sec-observability",
        "title": "Technical and business telemetry",
        "kind": "event",
        "mode": "asynchronous",
        "purpose": "Emit correlated events and control outcomes without avoidable sensitive content.",
        "failureBehaviour": "Buffer critical audit evidence during telemetry degradation.",
        "evidence": [
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "controls": [
          "Authentication and authorisation",
          "Integrity and replay protection",
          "Correlation and audit evidence"
        ],
        "lenses": [
          "interfaces",
          "data",
          "ledger",
          "controls",
          "operations",
          "resilience"
        ],
        "dataClassification": [
          "Payment instruction, status, and correlation metadata"
        ]
      },
      {
        "id": "sec-e6",
        "from": "sec-boundary",
        "to": "sec-observability",
        "title": "Boundary security event",
        "kind": "event",
        "mode": "asynchronous",
        "purpose": "Record authentication, authorisation, validation, and rate decisions.",
        "failureBehaviour": "Preserve boundary evidence locally when the central sink is unavailable.",
        "evidence": [
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "controls": [
          "Authentication and authorisation",
          "Integrity and replay protection",
          "Correlation and audit evidence"
        ],
        "lenses": [
          "interfaces",
          "data",
          "ledger",
          "controls",
          "operations",
          "resilience"
        ],
        "dataClassification": [
          "Payment instruction, status, and correlation metadata"
        ]
      },
      {
        "id": "sec-e7",
        "from": "sec-observability",
        "to": "sec-continuity",
        "title": "Incident and recovery signal",
        "kind": "event",
        "mode": "asynchronous",
        "purpose": "Trigger owned response from proven service and payment symptoms.",
        "failureBehaviour": "Escalate blind spots and conflicting signals.",
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Detection, response, and recovery",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          }
        ],
        "controls": [
          "Authentication and authorisation",
          "Integrity and replay protection",
          "Correlation and audit evidence"
        ],
        "lenses": [
          "interfaces",
          "data",
          "ledger",
          "controls",
          "operations",
          "resilience"
        ],
        "dataClassification": [
          "Payment instruction, status, and correlation metadata"
        ]
      },
      {
        "id": "sec-e8",
        "from": "sec-continuity",
        "to": "sec-platform",
        "title": "Controlled recovery action",
        "kind": "control",
        "mode": "operator",
        "purpose": "Restore dependency, state, queue, and traffic in an approved order.",
        "failureBehaviour": "Block replay until idempotency and ledger state are proven.",
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-pfmi",
              "locator": "Principle 17",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO Principles for financial market infrastructures"
          },
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "controls": [
          "Authentication and authorisation",
          "Integrity and replay protection",
          "Correlation and audit evidence"
        ],
        "lenses": [
          "interfaces",
          "data",
          "ledger",
          "controls",
          "operations",
          "resilience"
        ],
        "dataClassification": [
          "Payment instruction, status, and correlation metadata"
        ]
      },
      {
        "id": "sec-e9",
        "from": "sec-governance",
        "to": "sec-entitlements",
        "title": "Access policy and review",
        "kind": "control",
        "mode": "batch",
        "purpose": "Publish approved roles, limits, recertification, and emergency-access policy.",
        "failureBehaviour": "Remove expired or unsupported privilege.",
        "evidence": [
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ],
        "controls": [
          "Authentication and authorisation",
          "Integrity and replay protection",
          "Correlation and audit evidence"
        ],
        "lenses": [
          "interfaces",
          "data",
          "ledger",
          "controls",
          "operations",
          "resilience"
        ],
        "dataClassification": [
          "Payment instruction, status, and correlation metadata"
        ]
      },
      {
        "id": "sec-e10",
        "from": "sec-governance",
        "to": "sec-continuity",
        "title": "Tested recovery requirement",
        "kind": "control",
        "mode": "operator",
        "purpose": "Set and evidence recovery scenarios, objectives, dependencies, and lessons.",
        "failureBehaviour": "Keep production enablement gated when the test cannot prove payment correctness.",
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Testing and learning",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          }
        ],
        "controls": [
          "Authentication and authorisation",
          "Integrity and replay protection",
          "Correlation and audit evidence"
        ],
        "lenses": [
          "interfaces",
          "data",
          "ledger",
          "controls",
          "operations",
          "resilience"
        ],
        "dataClassification": [
          "Payment instruction, status, and correlation metadata"
        ]
      }
    ],
    "views": [
      {
        "id": "context",
        "label": "Context",
        "plainPurpose": "Who depends on the architecture, which external service it reaches, and where value ultimately moves.",
        "nodeIds": [],
        "interfaceIds": [],
        "placements": {},
        "boundaries": []
      },
      {
        "id": "container",
        "label": "Container",
        "plainPurpose": "The major applications, stores, gateways, controls, and operational ownership boundaries.",
        "nodeIds": [
          "sec-entitlements",
          "sec-boundary",
          "sec-observability",
          "sec-continuity",
          "sec-governance"
        ],
        "interfaceIds": [
          "sec-e2",
          "sec-e6",
          "sec-e7",
          "sec-e9",
          "sec-e10"
        ],
        "placements": {
          "sec-entitlements": {
            "x": 80,
            "y": 100,
            "width": 244,
            "height": 126
          },
          "sec-boundary": {
            "x": 444,
            "y": 100,
            "width": 244,
            "height": 126
          },
          "sec-observability": {
            "x": 808,
            "y": 100,
            "width": 244,
            "height": 126
          },
          "sec-continuity": {
            "x": 80,
            "y": 326,
            "width": 244,
            "height": 126
          },
          "sec-governance": {
            "x": 444,
            "y": 326,
            "width": 244,
            "height": 126
          }
        },
        "boundaries": [
          {
            "id": "container-bank-boundary",
            "label": "Institution-controlled boundary",
            "nodeIds": [
              "sec-entitlements",
              "sec-boundary",
              "sec-observability",
              "sec-continuity",
              "sec-governance"
            ],
            "kind": "ownership"
          }
        ]
      },
      {
        "id": "component",
        "label": "Component",
        "plainPurpose": "The processing responsibilities and interface contracts that must cooperate for one payment.",
        "nodeIds": [
          "sec-identities",
          "sec-entitlements",
          "sec-boundary",
          "sec-secrets",
          "sec-platform",
          "sec-observability",
          "sec-continuity",
          "sec-governance"
        ],
        "interfaceIds": [
          "sec-e1",
          "sec-e2",
          "sec-e3",
          "sec-e4",
          "sec-e5",
          "sec-e6",
          "sec-e7",
          "sec-e8",
          "sec-e9",
          "sec-e10"
        ],
        "placements": {
          "sec-identities": {
            "x": 80,
            "y": 100,
            "width": 196,
            "height": 126
          },
          "sec-entitlements": {
            "x": 376,
            "y": 100,
            "width": 196,
            "height": 126
          },
          "sec-boundary": {
            "x": 672,
            "y": 100,
            "width": 196,
            "height": 126
          },
          "sec-secrets": {
            "x": 968,
            "y": 100,
            "width": 196,
            "height": 126
          },
          "sec-platform": {
            "x": 80,
            "y": 326,
            "width": 196,
            "height": 126
          },
          "sec-observability": {
            "x": 376,
            "y": 326,
            "width": 196,
            "height": 126
          },
          "sec-continuity": {
            "x": 672,
            "y": 326,
            "width": 196,
            "height": 126
          },
          "sec-governance": {
            "x": 968,
            "y": 326,
            "width": 196,
            "height": 126
          }
        },
        "boundaries": [
          {
            "id": "component-bank-boundary",
            "label": "Institution-controlled boundary",
            "nodeIds": [
              "sec-identities",
              "sec-entitlements",
              "sec-boundary",
              "sec-secrets",
              "sec-platform",
              "sec-observability",
              "sec-continuity",
              "sec-governance"
            ],
            "kind": "ownership"
          }
        ]
      },
      {
        "id": "deployment",
        "label": "Deployment",
        "plainPurpose": "The trust zones, runtime dependencies, external connections, and recovery boundaries.",
        "nodeIds": [
          "sec-identities",
          "sec-boundary",
          "sec-secrets",
          "sec-platform",
          "sec-observability"
        ],
        "interfaceIds": [
          "sec-e3",
          "sec-e4",
          "sec-e5",
          "sec-e6"
        ],
        "placements": {
          "sec-identities": {
            "x": 80,
            "y": 100,
            "width": 244,
            "height": 126
          },
          "sec-boundary": {
            "x": 444,
            "y": 100,
            "width": 244,
            "height": 126
          },
          "sec-secrets": {
            "x": 808,
            "y": 100,
            "width": 244,
            "height": 126
          },
          "sec-platform": {
            "x": 80,
            "y": 326,
            "width": 244,
            "height": 126
          },
          "sec-observability": {
            "x": 444,
            "y": 326,
            "width": 244,
            "height": 126
          }
        },
        "boundaries": [
          {
            "id": "deployment-bank-boundary",
            "label": "Institution-controlled boundary",
            "nodeIds": [
              "sec-identities",
              "sec-boundary",
              "sec-secrets",
              "sec-platform",
              "sec-observability"
            ],
            "kind": "ownership"
          }
        ]
      }
    ],
    "traces": [
      {
        "id": "sec-trusted-payment",
        "label": "Trusted release and recoverable evidence",
        "summary": "Follow the controls that authenticate, authorise, protect, observe, and safely recover one payment action.",
        "viewId": "component",
        "steps": [
          {
            "id": "sec-trusted-payment-step-1",
            "title": "Establish identity",
            "nodeId": "sec-identities",
            "interfaceId": "sec-e1",
            "plainExplanation": "A human, service, or participant presents current verifiable identity.",
            "businessState": "Actor authenticated"
          },
          {
            "id": "sec-trusted-payment-step-2",
            "title": "Prove authority",
            "nodeId": "sec-entitlements",
            "interfaceId": "sec-e2",
            "plainExplanation": "Role, amount, service, product, and context permit this exact action.",
            "businessState": "Action authorised"
          },
          {
            "id": "sec-trusted-payment-step-3",
            "title": "Protect integrity",
            "nodeId": "sec-secrets",
            "interfaceId": "sec-e3",
            "plainExplanation": "Signing and verification use controlled key material and current trust.",
            "businessState": "Trust material current"
          },
          {
            "id": "sec-trusted-payment-step-4",
            "title": "Validate the boundary",
            "nodeId": "sec-boundary",
            "interfaceId": "sec-e4",
            "plainExplanation": "Identity, authority, integrity, replay, schema, and size checks pass.",
            "businessState": "Traffic admitted"
          },
          {
            "id": "sec-trusted-payment-step-5",
            "title": "Process in a controlled runtime",
            "nodeId": "sec-platform",
            "interfaceId": "sec-e5",
            "plainExplanation": "The runtime uses protected state and emits a correlated business event.",
            "businessState": "Payment action recorded"
          },
          {
            "id": "sec-trusted-payment-step-6",
            "title": "Observe the outcome",
            "nodeId": "sec-observability",
            "interfaceId": "sec-e7",
            "plainExplanation": "Security and payment telemetry can reconstruct the action without exposing unnecessary data.",
            "businessState": "Control evidence retained"
          },
          {
            "id": "sec-trusted-payment-step-7",
            "title": "Keep recovery payment-safe",
            "nodeId": "sec-continuity",
            "plainExplanation": "If service fails, queue, ledger, and settlement state govern staged reopening.",
            "businessState": "Recovery boundary known"
          }
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Governance through recovery",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          },
          {
            "ref": {
              "sourceId": "bis-cpmi-pfmi",
              "locator": "Principle 17",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO Principles for financial market infrastructures"
          },
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ]
      }
    ],
    "stressCases": [
      {
        "id": "sec-stress-credential",
        "label": "Privileged credential is compromised",
        "trigger": "A privileged identity is suspected of unauthorised payment or configuration action.",
        "divergesAfterStepId": "sec-trusted-payment-step-2",
        "traceId": "sec-trusted-payment",
        "affectedNodeIds": [
          "sec-identities",
          "sec-entitlements",
          "sec-observability",
          "sec-governance"
        ],
        "affectedInterfaceIds": [
          "sec-e1",
          "sec-e2",
          "sec-e5"
        ],
        "lastConfirmedState": "Identity and action history exist; legitimacy is uncertain.",
        "settlementState": "Settlement varies by each affected payment and must be traced.",
        "fundsState": "Books and external movements must be reviewed individually.",
        "owner": "Security incident command and payment control owner",
        "safeAction": "Revoke access, contain sessions, freeze affected authority, and trace every action to payment and settlement evidence.",
        "requiredEvidence": [
          "Authentication events",
          "Entitlement history",
          "Configuration changes",
          "Payment and ledger references"
        ],
        "recoverySteps": [
          "Rotate credentials",
          "Review and correct unauthorised actions",
          "Revalidate controls before restoring access"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Response and recovery",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          },
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ]
      },
      {
        "id": "sec-stress-key",
        "label": "Signing service is unavailable",
        "trigger": "Outbound network messages cannot be signed with current trusted keys.",
        "divergesAfterStepId": "sec-trusted-payment-step-3",
        "traceId": "sec-trusted-payment",
        "affectedNodeIds": [
          "sec-secrets",
          "sec-boundary",
          "sec-platform"
        ],
        "affectedInterfaceIds": [
          "sec-e3",
          "sec-e4"
        ],
        "lastConfirmedState": "Payments may be approved internally but cannot cross the protected boundary.",
        "settlementState": "External settlement has not been initiated for queued messages.",
        "fundsState": "Internal reservations or postings depend on product design.",
        "owner": "Network security and payment operations",
        "safeAction": "Queue securely and invoke only the approved alternate signing or connectivity path.",
        "requiredEvidence": [
          "Key status",
          "Queued message hashes",
          "Approval and cut-off",
          "Alternate-path authority"
        ],
        "recoverySteps": [
          "Restore trusted signing",
          "Revalidate queued messages and authority",
          "Release once with original identifiers"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ]
      },
      {
        "id": "sec-stress-failover",
        "label": "Failover restores a stale queue",
        "trigger": "The recovery site has an earlier queue checkpoint than the ledger or network.",
        "divergesAfterStepId": "sec-trusted-payment-step-6",
        "traceId": "sec-trusted-payment",
        "affectedNodeIds": [
          "sec-continuity",
          "sec-platform",
          "sec-observability"
        ],
        "affectedInterfaceIds": [
          "sec-e7",
          "sec-e8"
        ],
        "lastConfirmedState": "Ledger and network may be ahead of the restored queue.",
        "settlementState": "Some payments may already be settled.",
        "fundsState": "Replaying the queue could duplicate value.",
        "owner": "Incident command, ledger, and payment operations",
        "safeAction": "Stop replay and reconcile business keys across queue, ledger, network, and statements.",
        "requiredEvidence": [
          "Recovery checkpoint",
          "Queue journal",
          "Ledger journal",
          "Network acknowledgements",
          "Statements"
        ],
        "recoverySteps": [
          "Rebuild the authoritative queue",
          "Mark completed work",
          "Replay only proven missing items",
          "Validate balances before full reopen"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-pfmi",
              "locator": "Principle 17",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO Principles for financial market infrastructures"
          },
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Response and recovery",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          }
        ]
      }
    ],
    "overlays": [
      {
        "id": "sec-overlay-network",
        "label": "External payment-network boundary",
        "summary": "Show participant identity, entitlements, signing, message validation, telemetry, and recovery around an external network connection.",
        "nodeIds": [
          "sec-identities",
          "sec-entitlements",
          "sec-secrets",
          "sec-boundary",
          "sec-platform",
          "sec-observability",
          "sec-continuity"
        ],
        "interfaceIds": [
          "sec-e1",
          "sec-e2",
          "sec-e3",
          "sec-e4",
          "sec-e5",
          "sec-e6",
          "sec-e7",
          "sec-e8"
        ],
        "relatedFlowIds": [
          "flow-swift-rma-routing",
          "flow-swift-gpi",
          "flow-t2-rtgs",
          "flow-fedwire-funds"
        ],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-pfmi",
              "locator": "Principles 17 and 22",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO Principles for financial market infrastructures"
          },
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Protection through recovery",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          }
        ],
        "coverageGap": "Network-specific controls require current participant security and connectivity documentation."
      },
      {
        "id": "sec-overlay-continuity",
        "label": "Payment-safe continuity",
        "summary": "Keep queue, ledger, network, settlement, and reporting checkpoints visible during failover and replay.",
        "nodeIds": [
          "sec-platform",
          "sec-observability",
          "sec-continuity",
          "sec-governance"
        ],
        "interfaceIds": [
          "sec-e5",
          "sec-e7",
          "sec-e8",
          "sec-e10"
        ],
        "relatedFlowIds": [],
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-pfmi",
              "locator": "Principle 17",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO Principles for financial market infrastructures"
          },
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Response, recovery, and testing",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          }
        ]
      }
    ],
    "decisions": [
      {
        "id": "sec-decision-failover",
        "question": "What is the unit of recovery?",
        "options": [
          {
            "label": "Payment-safe checkpoint",
            "consequence": "Requires cross-system queue, ledger, network, and settlement evidence before replay."
          },
          {
            "label": "Application availability",
            "consequence": "May restore a service quickly while leaving value state inconsistent."
          }
        ],
        "guidance": "Set recovery objectives for correct payment state and reconciled value, not process uptime alone.",
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-pfmi",
              "locator": "Principle 17",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO Principles for financial market infrastructures"
          },
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ]
      },
      {
        "id": "sec-decision-telemetry",
        "question": "How much payment data belongs in telemetry?",
        "options": [
          {
            "label": "Minimised identifiers and outcomes",
            "consequence": "Supports correlation while reducing exposure and log-handling scope."
          },
          {
            "label": "Full payloads",
            "consequence": "Makes some debugging easier but copies sensitive data into another high-risk store."
          }
        ],
        "guidance": "Log stable references, state, control outcomes, versions, and timings; retrieve protected payloads only through authorised case access.",
        "evidence": [
          {
            "ref": {
              "sourceId": "bis-cpmi-cyber-resilience",
              "locator": "Protection and detection",
              "label": "official-requirement"
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "CPMI-IOSCO cyber-resilience guidance"
          },
          {
            "ref": {
              "sourceId": "payments-signal-editorial",
              "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
              "label": "simplified-educational-illustration",
              "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
            },
            "verifiedDate": "2026-07-23",
            "versionContext": "Payments Signal reference architecture v1"
          }
        ]
      }
    ],
    "targets": [
      {
        "type": "flow",
        "id": "flow-swift-rma-routing"
      },
      {
        "type": "flow",
        "id": "flow-swift-gpi"
      },
      {
        "type": "flow",
        "id": "flow-t2-rtgs"
      },
      {
        "type": "flow",
        "id": "flow-fedwire-funds"
      }
    ],
    "glossaryTermIds": [
      "business-continuity",
      "cyber-resilience",
      "entitlement",
      "idempotency",
      "least-privilege",
      "recovery-point-objective",
      "recovery-time-objective",
      "segregation-of-duties",
      "trust-boundary"
    ],
    "evidence": [
      {
        "ref": {
          "sourceId": "bis-cpmi-cyber-resilience",
          "locator": "All guidance chapters",
          "label": "official-requirement"
        },
        "verifiedDate": "2026-07-23",
        "versionContext": "CPMI-IOSCO cyber-resilience guidance"
      },
      {
        "ref": {
          "sourceId": "bis-cpmi-pfmi",
          "locator": "Principles 2, 17 and 22",
          "label": "official-requirement"
        },
        "verifiedDate": "2026-07-23",
        "versionContext": "CPMI-IOSCO Principles for financial market infrastructures"
      },
      {
        "ref": {
          "sourceId": "payments-signal-editorial",
          "locator": "Payment security, trust boundaries, observability, continuity, and recovery",
          "label": "simplified-educational-illustration",
          "simplifications": "Control ownership, cryptographic protocols, recovery objectives, data residency, privileged-access model, continuity sites, and regulatory duties depend on the institution, service, jurisdiction, risk assessment, and deployment."
        },
        "verifiedDate": "2026-07-23",
        "versionContext": "Payments Signal reference architecture v1"
      }
    ],
    "simplifies": "This blueprint shows control responsibilities around payment execution and recovery. It does not define a threat model, cryptographic suite, security-zone count, cloud pattern, recovery target, privileged-access product, data-residency rule, regulatory obligation, or certification outcome for a particular institution."
  },
  "sources": [
    {
      "id": "bis-cpmi-cyber-resilience",
      "publisher": "Committee on Payments and Market Infrastructures / IOSCO",
      "title": "Guidance on cyber resilience for financial market infrastructures",
      "sourceType": "regulatory-guidance",
      "accessedDate": "2026-07-23",
      "url": "https://www.bis.org/cpmi/publ/d146.htm",
      "applicability": "Sets expectations for governance, identification, protection, detection, response, recovery, testing, situational awareness, and learning at financial market infrastructures.",
      "notes": "The guidance applies to financial market infrastructures. A bank or payment-service provider should translate the control outcomes into its own regulatory, risk, and operating context."
    },
    {
      "id": "bis-cpmi-pfmi",
      "publisher": "CPMI and IOSCO (Bank for International Settlements)",
      "title": "Principles for financial market infrastructures",
      "sourceType": "industry-paper",
      "publicationDate": "2012-04-16",
      "accessedDate": "2026-07-12",
      "url": "https://www.bis.org/cpmi/publ/d101.htm",
      "applicability": "International risk-management standards for systemically important payment systems and other financial market infrastructures.",
      "notes": "Published by the CPSS (now CPMI) and IOSCO; contains 24 principles plus responsibilities for authorities. This site uses it only for high-level concepts such as settlement finality."
    },
    {
      "id": "payments-signal-editorial",
      "publisher": "Payments Signal",
      "title": "Payments Signal editorial teaching models",
      "sourceType": "educational-simplification",
      "accessedDate": "2026-07-12",
      "applicability": "This site's own simplified teaching models.",
      "notes": "Used wherever diagrams, scenarios, figures, or example values are didactic constructions rather than sourced facts; every such use carries a simplifications disclosure. All people, companies, banks, and list entries in examples are fictional."
    }
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      "type": "article",
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      "type": "article",
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      "type": "article",
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      "type": "article",
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      "type": "article",
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      "type": "article",
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      "type": "article",
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      "type": "article",
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    {
      "type": "glossary",
      "label": "ESMIG (Eurosystem Single Market Infrastructure Gateway)",
      "href": "/glossary#esmig",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "False positive",
      "href": "/glossary#false-positive",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "FATCA (Foreign Account Tax Compliance Act)",
      "href": "/glossary#fatca",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "FATF (Financial Action Task Force)",
      "href": "/glossary#fatf",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "FedNow Service",
      "href": "/glossary#fednow",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Fedwire Funds Service",
      "href": "/glossary#fedwire",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Fiat-backed stablecoin",
      "href": "/glossary#fiat-backed-stablecoin",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Fifty percent rule",
      "href": "/glossary#fifty-percent-rule",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Financial intelligence unit (FIU)",
      "href": "/glossary#fiu",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "FSRB (FATF-Style Regional Body)",
      "href": "/glossary#fsrb",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "gpi Cover (gCOV)",
      "href": "/glossary#gcov",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "gpi Customer Credit Transfer (gCCT)",
      "href": "/glossary#gcct",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "gpi Financial Institution Transfer (gFIT)",
      "href": "/glossary#gfit",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "gpi Instant",
      "href": "/glossary#gpi-instant",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "gSRP (gpi Stop and Recall Payment)",
      "href": "/glossary#gsrp",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Input credit file",
      "href": "/glossary#input-credit-file",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Intraday liquidity",
      "href": "/glossary#intraday-liquidity",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Issuing bank",
      "href": "/glossary#issuing-bank",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Know your customer (KYC)",
      "href": "/glossary#kyc",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Letter of credit",
      "href": "/glossary#letter-of-credit",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Message template",
      "href": "/glossary#message-template",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Money laundering (ML)",
      "href": "/glossary#money-laundering",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Money laundering reporting officer (MLRO)",
      "href": "/glossary#mlro",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Money mule",
      "href": "/glossary#money-mule",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "MT700",
      "href": "/glossary#mt700",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Nested correspondent banking",
      "href": "/glossary#nested-correspondent",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Nominated bank",
      "href": "/glossary#nominated-bank",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Nostro account",
      "href": "/glossary#nostro-account",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Notional cash pooling",
      "href": "/glossary#notional-cash-pooling",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "OFAC",
      "href": "/glossary#ofac",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "OFSI",
      "href": "/glossary#ofsi",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "On-us payment",
      "href": "/glossary#on-us-payment",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Ownership and control",
      "href": "/glossary#ownership-and-control",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Payment engine",
      "href": "/glossary#payment-engine",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Payment hub",
      "href": "/glossary#payment-hub",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Payment market infrastructure",
      "href": "/glossary#market-infrastructure",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Payment orchestration",
      "href": "/glossary#orchestration",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Payment Pre-validation",
      "href": "/glossary#payment-pre-validation",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "PEP",
      "href": "/glossary#pep",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Physical cash pooling",
      "href": "/glossary#physical-cash-pooling",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Predicate offence",
      "href": "/glossary#predicate-offence",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Programmable payment",
      "href": "/glossary#programmable-payment",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Proxy addressing",
      "href": "/glossary#proxy-addressing",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Recall",
      "href": "/glossary#recall",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Reconciliation",
      "href": "/glossary#reconciliation",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Reference data",
      "href": "/glossary#reference-data",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Reject",
      "href": "/glossary#reject",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Rescreening",
      "href": "/glossary#rescreening",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Retail CBDC",
      "href": "/glossary#retail-cbdc",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Return",
      "href": "/glossary#return",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Rules engine",
      "href": "/glossary#rules-engine",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Sanctions",
      "href": "/glossary#sanctions",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Sanctions list",
      "href": "/glossary#sanctions-list",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Scheme adapter",
      "href": "/glossary#scheme-adapter",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Screening",
      "href": "/glossary#screening",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "SDN List",
      "href": "/glossary#sdn-list",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Sectoral sanctions",
      "href": "/glossary#sectoral-sanctions",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Settlement asset",
      "href": "/glossary#settlement-asset",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Singleness of money",
      "href": "/glossary#singleness-of-money",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Straight-through processing",
      "href": "/glossary#straight-through-processing",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Structuring",
      "href": "/glossary#structuring",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Suspense account",
      "href": "/glossary#suspense-account",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Suspicious activity report (SAR)",
      "href": "/glossary#sar",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "SWIFT gpi",
      "href": "/glossary#gpi",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "T2S (TARGET2-Securities)",
      "href": "/glossary#t2s",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "TARGET2 / T2",
      "href": "/glossary#target2",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Terrorist financing (TF)",
      "href": "/glossary#terrorist-financing",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Token-based CBDC",
      "href": "/glossary#token-based-cbdc",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Tokenized deposit",
      "href": "/glossary#tokenized-deposit",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Tokenized settlement",
      "href": "/glossary#tokenized-settlement",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Trade-based money laundering (TBML)",
      "href": "/glossary#trade-based-money-laundering",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "True match",
      "href": "/glossary#true-match",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "UN Security Council",
      "href": "/glossary#un-security-council",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Unified ledger",
      "href": "/glossary#unified-ledger",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Universal Confirmation",
      "href": "/glossary#universal-confirmation",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Value date",
      "href": "/glossary#value-date",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Virtual account",
      "href": "/glossary#virtual-account",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Virtual IBAN",
      "href": "/glossary#virtual-iban",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Wholesale CBDC",
      "href": "/glossary#wholesale-cbdc",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Wolfsberg CBDDQ",
      "href": "/glossary#cbddq",
      "coverage": "derived"
    },
    {
      "type": "glossary",
      "label": "Wolfsberg Group",
      "href": "/glossary#wolfsberg-group",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "Fedwire Funds Service implementation pack",
      "href": "/downloads/profile-packs/fedwire",
      "coverage": "direct"
    },
    {
      "type": "resource",
      "label": "Fedwire Funds Service implementation pack acceptance criteria",
      "href": "/downloads/assets/fedwire-acceptance-criteria",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "Fedwire Funds Service implementation pack BA checklist",
      "href": "/downloads/assets/fedwire-ba-checklist",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "Fedwire Funds Service implementation pack field and process matrix",
      "href": "/downloads/assets/fedwire-profile-rules",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "Fedwire Funds Service implementation pack migration notes",
      "href": "/downloads/assets/fedwire-migration-notes",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "Fedwire Funds Service implementation pack restricted and release-specific gaps",
      "href": "/downloads/assets/fedwire-coverage-gaps",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "Fedwire Funds Service implementation pack test cases",
      "href": "/downloads/assets/fedwire-test-cases",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "Fedwire Funds Service ISO 20022 implementation and technical documents",
      "href": "/implementation-resources",
      "coverage": "direct"
    },
    {
      "type": "resource",
      "label": "High-value payments implementation pack",
      "href": "/downloads/profile-packs/high-value",
      "coverage": "direct"
    },
    {
      "type": "resource",
      "label": "HVPS+ usage guidelines",
      "href": "/implementation-resources",
      "coverage": "direct"
    },
    {
      "type": "resource",
      "label": "T2 functional specifications, validation rules, and binding XSDs",
      "href": "/implementation-resources",
      "coverage": "direct"
    },
    {
      "type": "resource",
      "label": "T2 RTGS implementation pack",
      "href": "/downloads/profile-packs/t2",
      "coverage": "direct"
    },
    {
      "type": "resource",
      "label": "T2 RTGS implementation pack acceptance criteria",
      "href": "/downloads/assets/t2-acceptance-criteria",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "T2 RTGS implementation pack BA checklist",
      "href": "/downloads/assets/t2-ba-checklist",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "T2 RTGS implementation pack field and process matrix",
      "href": "/downloads/assets/t2-profile-rules",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "T2 RTGS implementation pack migration notes",
      "href": "/downloads/assets/t2-migration-notes",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "T2 RTGS implementation pack restricted and release-specific gaps",
      "href": "/downloads/assets/t2-coverage-gaps",
      "coverage": "derived"
    },
    {
      "type": "resource",
      "label": "T2 RTGS implementation pack test cases",
      "href": "/downloads/assets/t2-test-cases",
      "coverage": "derived"
    },
    {
      "type": "scenario",
      "label": "A clean pass through the filter",
      "href": "/screening/lab/clean-pass",
      "coverage": "derived"
    },
    {
      "type": "scenario",
      "label": "A common surname collides with the list",
      "href": "/screening/lab/name-collision-false-positive",
      "coverage": "derived"
    },
    {
      "type": "scenario",
      "label": "Not on the list, still blocked: ownership adds up",
      "href": "/screening/lab/ownership-escalation",
      "coverage": "derived"
    },
    {
      "type": "scenario",
      "label": "Strong name, wrong person: identifiers decide",
      "href": "/screening/lab/secondary-identifier-clear",
      "coverage": "derived"
    },
    {
      "type": "scenario",
      "label": "The alias that was the real name",
      "href": "/screening/lab/alias-true-match",
      "coverage": "derived"
    },
    {
      "type": "scenario",
      "label": "The hit hiding in the remittance line",
      "href": "/screening/lab/free-text-message-hit",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "A day in payment operations",
      "href": "/learn/operations/a-day-in-payment-operations",
      "coverage": "direct"
    },
    {
      "type": "topic",
      "label": "Accounting entries and ledgers",
      "href": "/learn/operations/accounting-entries-and-ledgers",
      "coverage": "direct"
    },
    {
      "type": "topic",
      "label": "Alert investigation and false positives",
      "href": "/screening/governance/alert-investigation-and-false-positives",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Asset freezes and restrictions",
      "href": "/screening/foundations/asset-freezes-and-restrictions",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Central bank digital currency (CBDC)",
      "href": "/learn/digital-money/central-bank-digital-currency",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Exceptions and investigations",
      "href": "/learn/operations/exceptions-and-investigations",
      "coverage": "direct"
    },
    {
      "type": "topic",
      "label": "Forms of money: central vs commercial bank money",
      "href": "/learn/digital-money/forms-of-money-central-vs-commercial",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Governance and policy",
      "href": "/screening/governance/governance-and-policy",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Intraday liquidity and queues",
      "href": "/learn/clearing-settlement/intraday-liquidity-and-queues",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Money laundering, terrorist financing, and FATF",
      "href": "/screening/foundations/money-laundering-and-fatf",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Nostro reconciliation",
      "href": "/learn/operations/nostro-reconciliation",
      "coverage": "direct"
    },
    {
      "type": "topic",
      "label": "Payment engines and hub architecture",
      "href": "/learn/operations/payment-hub-architecture",
      "coverage": "direct"
    },
    {
      "type": "topic",
      "label": "Payment market infrastructures",
      "href": "/learn/clearing-settlement/payment-market-infrastructures",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Payment security and fraud basics",
      "href": "/learn/operations/payment-security-and-fraud-basics",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Risk-based screening",
      "href": "/screening/foundations/risk-based-screening",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Sanctions screening vs AML vs fraud",
      "href": "/screening/foundations/sanctions-vs-aml-vs-fraud",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Stablecoins and tokenized deposits",
      "href": "/learn/digital-money/stablecoins-and-tokenized-deposits",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "SWIFT gpi and payment tracking",
      "href": "/learn/swift-mt/swift-gpi-and-tracking",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Testing and tuning",
      "href": "/screening/governance/testing-and-tuning",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Trade finance payments",
      "href": "/learn/digital-money/trade-finance-payments",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Treasury liquidity structures",
      "href": "/learn/operations/treasury-liquidity-structures",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "What sanctions are",
      "href": "/screening/foundations/what-sanctions-are",
      "coverage": "derived"
    },
    {
      "type": "topic",
      "label": "Who imposes sanctions",
      "href": "/screening/foundations/sanctions-authorities",
      "coverage": "derived"
    }
  ]
}
