{
  "chain_slug": "astar",
  "name": "Astar Network",
  "scorecard_profile": "L1",
  "evaluated_at": "2026-04-18",
  "evaluator": "layerqu-v2-scoring-agent-1",
  "v1_reference": "chainscreen-v1-archive",
  "dimensions": {
    "1_cryptographic_exposure": {
      "weight": 0.15,
      "score": 25,
      "sub_scores": {
        "1a_primitive_inventory": {
          "score": 9,
          "primitives_named": [
            "Sr25519 (Schnorr over Ristretto25519)",
            "ECDSA secp256k1 (EVM compatibility)",
            "BLS12-381 (Polkadot relay chain)",
            "BLAKE2b-256"
          ],
          "evidence": [
            "https://docs.astar.network"
          ],
          "note": "Substrate + Polkadot primitives."
        },
        "1b_shor_grover_pq_tag": {
          "score": 10,
          "tags": {
            "Sr25519": "Shor-break",
            "ECDSA secp256k1": "Shor-break",
            "BLS12-381": "Shor-break",
            "BLAKE2b-256": "Grover-weaken-128bit"
          },
          "evidence": [
            "https://docs.astar.network"
          ]
        },
        "1c_algorithm_family_diversity": {
          "score": 0,
          "families_represented": 0,
          "families": [],
          "note": "No PQC families"
        },
        "1d_nist_security_category": {
          "score": 0,
          "mappings": {},
          "note": "No NIST PQC primitives"
        },
        "1e_implementation_quality": {
          "score": 6,
          "formal_verification": "Substrate pallets formally reviewed",
          "constant_time": "curve25519-dalek",
          "libraries": [
            "schnorrkel",
            "blst"
          ],
          "evidence": [
            "https://github.com/paritytech/substrate"
          ]
        }
      },
      "total_artifacts": 2
    },
    "2_hndl_exposure": {
      "weight": 0.1,
      "score": 18,
      "sub_scores": {
        "2a_active_key_exposure": {
          "score": 4,
          "note": "Substrate SS58 addresses; pubkeys visible."
        },
        "2b_cold_key_exposure": {
          "score": 5,
          "note": "Parachain since 2022; moderate history."
        },
        "2c_signature_longterm_validity": {
          "score": 4,
          "note": "Sr25519 and BLS12-381 forgeable post-Shor."
        },
        "2d_encryption_confidentiality": {
          "score": 5,
          "note": "Polkadot libp2p uses Noise+x25519 — Shor-vulnerable."
        }
      },
      "total_artifacts": 1
    },
    "3_metadata_privacy_exposure": {
      "weight": 0.13,
      "score": 22,
      "sub_scores": {
        "3a_tx_graph_visibility": {
          "score": 5,
          "note": "Pseudonymous transparent ledger."
        },
        "3b_rpc_mempool_concentration": {
          "score": 6,
          "note": "OnFinality, Dwellir, Astar-official RPC. Moderate diversity."
        },
        "3c_cross_chain_bridge_correlation": {
          "score": 6,
          "note": "XCM (Polkadot native), LayerZero integration."
        },
        "3d_retroactive_deanon_risk": {
          "score": 5,
          "note": "No shielded layer. Sr25519 Shor-broken."
        }
      },
      "total_artifacts": 1
    },
    "4_migration_architecture": {
      "weight": 0.1,
      "score": 42,
      "sub_scores": {
        "4a_crypto_agility": {
          "score": 10,
          "note": "Substrate supports multiple sig schemes (Sr25519, Ed25519, ECDSA). Adding PQC would require pallet development."
        },
        "4b_account_abstraction_key_rotation": {
          "score": 10,
          "note": "Proxy accounts + multisig. No AA for sig-type rotation."
        },
        "4c_hard_fork_track_record": {
          "score": 15,
          "note": "Agile Coretime transition Aug 2025; Substrate forkless upgrades via runtime version change."
        },
        "4d_hybrid_deployment_readiness": {
          "score": 7,
          "note": "Polkadot relay chain future PQC work would cascade to Astar. No direct Astar roadmap."
        }
      },
      "total_artifacts": 2
    },
    "5_deployment_execution": {
      "weight": 0.22,
      "score": 2,
      "sub_scores": {
        "5a_mainnet_pqc_pct": {
          "score": 0,
          "mainnet_pqc_pct": 0,
          "evidence": [],
          "note": "no public artifact found"
        },
        "5b_pqc_code_in_client": {
          "score": 0,
          "note": "no PQC in Astar runtime"
        },
        "5c_validator_pqc_adoption": {
          "score": 0,
          "note": "Inherits Polkadot relay chain validators; no PQC keys"
        },
        "5d_published_milestones_count": {
          "score": 0,
          "count": 0,
          "note": "no PQC milestones"
        },
        "5e_pqc_washing_delta": {
          "score": 2,
          "ratio": 1,
          "note": "No PQC announcements"
        }
      },
      "total_artifacts": 0
    },
    "6_supply_chain_vendor_readiness": {
      "weight": 0.22,
      "score": 5,
      "sub_scores": {
        "6a_wallet": {
          "score": 2,
          "top3": [
            "Polkadot.js",
            "Talisman",
            "Ledger HW"
          ],
          "pqc_roadmap_count": 0,
          "evidence": []
        },
        "6b_bridge": {
          "score": 1,
          "top3": [
            "XCM",
            "LayerZero",
            "Wormhole"
          ],
          "pqc_roadmap_count": 0,
          "evidence": []
        },
        "6c_custodian": {
          "score": 1,
          "top3": [
            "Coinbase Custody",
            "BitGo",
            "Fireblocks"
          ],
          "pqc_roadmap_count": 0,
          "evidence": []
        },
        "6d_rpc_hsm": {
          "score": 1,
          "top3": [
            "OnFinality",
            "Dwellir",
            "Astar official RPC"
          ],
          "pqc_roadmap_count": 0,
          "evidence": []
        }
      },
      "total_artifacts": 1
    },
    "7_governance_coordination": {
      "weight": 0.08,
      "score": 40,
      "sub_scores": {
        "7a_validator_stake_distribution": {
          "score": 10,
          "note": "Inherits Polkadot's ~297 validators; strong decentralization at relay chain."
        },
        "7b_upgrade_cadence_under_pressure": {
          "score": 12,
          "note": "Substrate forkless upgrades; Agile Coretime transition."
        },
        "7c_named_coordination_lead": {
          "score": 12,
          "note": "Astar Foundation (Sota Watanabe) + Polkadot coordination."
        },
        "7d_adversarial_coordination_precedent": {
          "score": 6,
          "note": "No documented adversarial crypto-change."
        }
      },
      "total_artifacts": 2
    }
  },
  "gates": {
    "hybrid_deployment": "FAIL",
    "evidence_reconstruction": "PASS",
    "primitive_naming": "PASS"
  },
  "caps_applied": [
    "mosca_cap_60",
    "sutor_stage_cap_2",
    "casado_stage_cap_3",
    "preskill_half_dim2_dim3_dim5_dim6",
    "hybrid_gate_fail_cap_60"
  ],
  "qri": {
    "raw": 15,
    "after_caps": 15,
    "ci_plus_minus": 15,
    "band": 2,
    "band_name": "Acknowledged"
  },
  "migration_stage": 0,
  "mosca_inequality": {
    "X_signature_shelf_life_years": "5-10 (EOA with key rotation)",
    "Y_migration_time_years_range": "10-15",
    "Z_10pct_year": 2036,
    "Z_50pct_year": 2041,
    "danger_zone_at_50pct": true
  },
  "four_scenario_grid": {
    "quantum_never": {
      "value_preserved_pct": 100,
      "privacy_preserved_pct": 100
    },
    "arrives_suddenly_pre_migration": {
      "value_preserved_pct": 15,
      "privacy_preserved_pct": 5
    },
    "arrives_slowly_post_migration": {
      "value_preserved_pct": 80,
      "privacy_preserved_pct": 70
    },
    "arrives_slowly_mid_migration": {
      "value_preserved_pct": 45,
      "privacy_preserved_pct": 30
    }
  },
  "burn_vs_rescue_policy": "undeclared (depends on Polkadot relay chain policy)",
  "pqc_washing_ratio": 1,
  "vendor_tile_summary": {
    "wallet": {
      "top3": [
        "Polkadot.js",
        "Talisman",
        "Ledger HW"
      ],
      "pqc_roadmap_count": 0
    },
    "bridge": {
      "top3": [
        "XCM",
        "LayerZero",
        "Wormhole"
      ],
      "pqc_roadmap_count": 0
    },
    "custodian": {
      "top3": [
        "Coinbase Custody",
        "BitGo",
        "Fireblocks"
      ],
      "pqc_roadmap_count": 0
    },
    "rpc_hsm": {
      "top3": [
        "OnFinality",
        "Dwellir",
        "Astar RPC"
      ],
      "pqc_roadmap_count": 0
    }
  },
  "narrative_summary": "Astar is a Polkadot parachain inheriting relay-chain security. Uses Sr25519 (Ristretto25519) with ECDSA secp256k1 for EVM compat. Substrate forkless upgrades give coordination capability but no PQC work shipped. Dependent on Polkadot relay chain PQC roadmap.",
  "evaluator_notes": "Parachain status means PQC trajectory tied to Polkadot relay chain. Substrate runtime upgrade mechanism is genuinely forkless which helps agility if PQC pallet materializes.",
  "narrative_voiced": "Astar is a Polkadot parachain, which means its quantum readiness is whatever Polkadot's relay chain decides, and Polkadot has not decided. Substrate's forkless upgrade machinery is genuinely useful, but only if someone builds a post-quantum pallet to push through it. Right now nobody has."
}