syntax = "proto3";

package substrate.attestation.v2;

import "attestation/v2/platform.proto";
import "attestation/v2/software.proto";
import "attestation/v2/governance.proto";
import "attestation/v2/session.proto";

// ─── Top-level SAT Bundle ───────────────────────────────────────────
//
// Composite attestation bundle containing all four layers.
// Layers are optional — a minimal bundle may contain only L1 + L4.
// The explicit `optional` keyword generates has_*() accessors in
// codegen (Rust/prost, Python/protobuf) to distinguish absent layers
// from present-but-empty layers.

message SatBundle {
    uint32 sat_version = 1;                          // MUST be 2
    optional PlatformClaim platform_claim = 2;
    optional SoftwareClaim software_claim = 3;
    optional GovernanceClaim governance_claim = 4;
    optional SessionClaim session_claim = 5;
    bytes sat_hash = 6;                              // H(L1 || L2 || L3 || L4)
    string qm_receipt_id = 7;                        // Top-level QM receipt
}