{
  "chain_slug": "ink",
  "name": "Ink",
  "scorecard_profile": "rollup-L2",
  "evaluated_at": "2026-04-18",
  "evaluator": "layerqu-v2-scoring-agent-3",
  "v1_reference": "chainscreen-v1-archive",
  "dimensions": {
    "1_cryptographic_exposure": {
      "weight": 0.12,
      "score": 20,
      "sub_scores": {
        "1a_primitive_inventory": {
          "score": 8,
          "primitives_named": [
            "ECDSA secp256k1 (inherited from Ethereum)",
            "Keccak-256",
            "OP Stack fault proofs (hash-based)"
          ],
          "evidence": [
            "https://blog.kraken.com/news/announcing-ink"
          ],
          "note": "Standard OP Stack primitives."
        },
        "1b_shor_grover_pq_tag": {
          "score": 8,
          "tags": {
            "ECDSA secp256k1": "Shor-break",
            "Keccak-256": "Grover-weaken-128bit"
          },
          "evidence": []
        },
        "1c_algorithm_family_diversity": {
          "score": 0,
          "families_represented": 0,
          "families": [],
          "note": "No PQC families deployed"
        },
        "1d_nist_security_category": {
          "score": 0,
          "mappings": {},
          "note": "No NIST PQC primitives deployed"
        },
        "1e_implementation_quality": {
          "score": 4,
          "formal_verification": "OP Stack audits (external)",
          "constant_time": "standard libraries",
          "libraries": [
            "OP Stack"
          ],
          "evidence": []
        }
      },
      "total_artifacts": 1
    },
    "2_hndl_exposure": {
      "weight": 0.08,
      "score": 10,
      "sub_scores": {
        "2a_active_key_exposure": {
          "score": 3,
          "note": "Inherits Ethereum ECDSA. Small TVL (<$10M) limits absolute risk."
        },
        "2b_cold_key_exposure": {
          "score": 3,
          "note": "15 months old. Limited cold-key horizon."
        },
        "2c_signature_longterm_validity": {
          "score": 2,
          "note": "ECDSA Shor-breakable."
        },
        "2d_encryption_confidentiality": {
          "score": 2,
          "note": "Standard TLS. No PQC KEM."
        }
      },
      "total_artifacts": 0
    },
    "3_metadata_privacy_exposure": {
      "weight": 0.08,
      "score": 20,
      "sub_scores": {
        "3a_tx_graph_visibility": {
          "score": 5,
          "note": "Pseudonymous EVM transparency."
        },
        "3b_rpc_mempool_concentration": {
          "score": 3,
          "note": "Single Kraken sequencer. High concentration."
        },
        "3c_cross_chain_bridge_correlation": {
          "score": 6,
          "note": "ETH<->Ink bridge + Kraken exchange correlation possible."
        },
        "3d_retroactive_deanon_risk": {
          "score": 6,
          "note": "Non-private by design."
        }
      },
      "total_artifacts": 1
    },
    "4_migration_architecture": {
      "weight": 0.15,
      "score": 32,
      "sub_scores": {
        "4a_crypto_agility": {
          "score": 10,
          "note": "OP Stack is upgradable but Superchain-coordinated. Gated by Optimism/Ethereum direction."
        },
        "4b_account_abstraction_key_rotation": {
          "score": 10,
          "note": "Inherits Ethereum ERC-4337/EIP-7702 AA path."
        },
        "4c_hard_fork_track_record": {
          "score": 6,
          "note": "Participated in permissionless fault proofs upgrade with Optimism."
        },
        "4d_hybrid_deployment_readiness": {
          "score": 6,
          "note": "Depends entirely on Ethereum/OP Superchain PQC path."
        }
      },
      "total_artifacts": 2
    },
    "5_deployment_execution": {
      "weight": 0.22,
      "score": 0,
      "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 public artifact found"
        },
        "5c_validator_pqc_adoption": {
          "score": 0,
          "note": "no public artifact found (single sequencer, no validator set)"
        },
        "5d_published_milestones_count": {
          "score": 0,
          "count": 0,
          "note": "no public artifact found"
        },
        "5e_pqc_washing_delta": {
          "score": 0,
          "ratio": 1,
          "note": "No PQC announcements."
        }
      },
      "total_artifacts": 0
    },
    "6_supply_chain_vendor_readiness": {
      "weight": 0.25,
      "score": 8,
      "sub_scores": {
        "6a_wallet": {
          "score": 2,
          "top3": [
            "MetaMask",
            "Kraken wallet",
            "Rabby"
          ],
          "pqc_roadmap_count": 0
        },
        "6b_bridge": {
          "score": 2,
          "top3": [
            "Ink Native Bridge",
            "LayerZero",
            "Across"
          ],
          "pqc_roadmap_count": 0
        },
        "6c_custodian": {
          "score": 2,
          "top3": [
            "Kraken Custody",
            "Fireblocks (research only)",
            "Coinbase Custody"
          ],
          "pqc_roadmap_count": 0
        },
        "6d_rpc_hsm": {
          "score": 2,
          "top3": [
            "Ink RPC (Kraken)",
            "Alchemy",
            "QuickNode"
          ],
          "pqc_roadmap_count": 0
        }
      },
      "total_artifacts": 1
    },
    "7_governance_coordination": {
      "weight": 0.1,
      "score": 30,
      "sub_scores": {
        "7a_validator_stake_distribution": {
          "score": 5,
          "note": "Centralized Kraken sequencer. No validator set."
        },
        "7b_upgrade_cadence_under_pressure": {
          "score": 8,
          "note": "Launched ahead of schedule, Optimism collaboration on permissionless fault proofs."
        },
        "7c_named_coordination_lead": {
          "score": 10,
          "note": "Kraken-incubated team + Ink Foundation. No named PQC lead."
        },
        "7d_adversarial_coordination_precedent": {
          "score": 7,
          "note": "Kraken has 13+ year exchange track record. No PQC precedent."
        }
      },
      "total_artifacts": 2
    }
  },
  "gates": {
    "hybrid_deployment": "FAIL",
    "evidence_reconstruction": "PASS",
    "primitive_naming": "PASS"
  },
  "caps_applied": [
    "Mosca (5a<20% → QRI max 60)",
    "Sutor (5d=0 → Migration Stage max 2)",
    "Preskill (several dims <3 artifacts × 0.5)",
    "Casado (4 vendor tiles pqc=0 → migration_stage max 3)",
    "Hybrid gate FAIL → QRI cap 60"
  ],
  "qri": {
    "raw": 13,
    "after_caps": 13,
    "ci_plus_minus": 12,
    "band": 1,
    "band_name": "Unaware"
  },
  "migration_stage": 0,
  "mosca_inequality": {
    "X_signature_shelf_life_years": "5-10 (young L2)",
    "Y_migration_time_years_range": "10-15 (gated by Ethereum/OP Superchain)",
    "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": 5,
      "privacy_preserved_pct": 10
    },
    "arrives_slowly_post_migration": {
      "value_preserved_pct": 80,
      "privacy_preserved_pct": 70
    },
    "arrives_slowly_mid_migration": {
      "value_preserved_pct": 30,
      "privacy_preserved_pct": 25
    }
  },
  "burn_vs_rescue_policy": "undeclared",
  "pqc_washing_ratio": 1,
  "vendor_tile_summary": {
    "wallet": {
      "top3": [
        "MetaMask",
        "Kraken wallet",
        "Rabby"
      ],
      "pqc_roadmap_count": 0
    },
    "bridge": {
      "top3": [
        "Ink Bridge",
        "LayerZero",
        "Across"
      ],
      "pqc_roadmap_count": 0
    },
    "custodian": {
      "top3": [
        "Kraken Custody",
        "Fireblocks",
        "Coinbase Custody"
      ],
      "pqc_roadmap_count": 0
    },
    "rpc_hsm": {
      "top3": [
        "Ink RPC",
        "Alchemy",
        "QuickNode"
      ],
      "pqc_roadmap_count": 0
    }
  },
  "narrative_summary": "Ink is Kraken's OP Stack L2 (Dec 2024), <$10M TVL, ~15 dApps. Centralized sequencer, Foundation-controlled upgrades. Quantum path entirely depends on Ethereum/OP Superchain. No PQC activity. Band 1 Unaware.",
  "evaluator_notes": "Kraken exchange credibility is a governance positive but doesn't translate to PQC planning. Entirely dependent on Ethereum for crypto upgrades.",
  "narrative_voiced": "Ink is Kraken's fifteen-month-old OP Stack L2 with a single sequencer and under ten million in TVL. Its quantum posture is whatever Ethereum and the Superchain decide it is. The unusual honesty here is that there is nothing chain-specific to evaluate."
}