{
  "chain_slug": "mantle",
  "name": "Mantle",
  "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": 22,
      "sub_scores": {
        "1a_primitive_inventory": {
          "score": 10,
          "primitives_named": [
            "ECDSA secp256k1 (inherited from Ethereum)",
            "EigenDA BLS12-381 (data availability attestations)",
            "Keccak-256",
            "MantleDA (Optimistic + BLS-signed DA)"
          ],
          "evidence": [
            "https://www.mantle.xyz/litepaper"
          ],
          "note": "Optimistic rollup using EigenDA (originally MantleDA)."
        },
        "1b_shor_grover_pq_tag": {
          "score": 10,
          "tags": {
            "ECDSA secp256k1": "Shor-break",
            "BLS12-381 (EigenDA)": "Shor-break (pairing-based)",
            "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": 2,
          "formal_verification": "OP Stack audits (external)",
          "constant_time": "standard libraries",
          "libraries": [
            "OP Stack derivative + EigenDA client"
          ],
          "evidence": []
        }
      },
      "total_artifacts": 1
    },
    "2_hndl_exposure": {
      "weight": 0.08,
      "score": 12,
      "sub_scores": {
        "2a_active_key_exposure": {
          "score": 3,
          "note": "EOA ECDSA inherited from Ethereum. BitDAO treasury-backed TVL is sizeable."
        },
        "2b_cold_key_exposure": {
          "score": 3,
          "note": "Mainnet July 2023. BitDAO historical addresses (pre-Mantle rebrand) extend cold-key horizon."
        },
        "2c_signature_longterm_validity": {
          "score": 3,
          "note": "ECDSA + BLS12-381 DA sigs both Shor-breakable."
        },
        "2d_encryption_confidentiality": {
          "score": 3,
          "note": "Standard TLS. No PQC KEM."
        }
      },
      "total_artifacts": 0
    },
    "3_metadata_privacy_exposure": {
      "weight": 0.08,
      "score": 22,
      "sub_scores": {
        "3a_tx_graph_visibility": {
          "score": 6,
          "note": "Pseudonymous EVM transparency."
        },
        "3b_rpc_mempool_concentration": {
          "score": 5,
          "note": "Mantle-operated sequencer + EigenDA node set."
        },
        "3c_cross_chain_bridge_correlation": {
          "score": 6,
          "note": "ETH<->Mantle bridge + BitDAO treasury movements visible."
        },
        "3d_retroactive_deanon_risk": {
          "score": 5,
          "note": "Non-private by design."
        }
      },
      "total_artifacts": 0
    },
    "4_migration_architecture": {
      "weight": 0.15,
      "score": 30,
      "sub_scores": {
        "4a_crypto_agility": {
          "score": 8,
          "note": "OP Stack derivative. EigenDA migration (from MantleDA) shows capacity for DA-layer changes."
        },
        "4b_account_abstraction_key_rotation": {
          "score": 8,
          "note": "Inherits ERC-4337 from Ethereum."
        },
        "4c_hard_fork_track_record": {
          "score": 8,
          "note": "BitDAO→Mantle rebrand + EigenDA migration. Strong coordination history."
        },
        "4d_hybrid_deployment_readiness": {
          "score": 6,
          "note": "No hybrid PQC plan. Depends on Ethereum + EigenDA roadmaps."
        }
      },
      "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"
        },
        "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",
            "Rabby",
            "Bybit Wallet"
          ],
          "pqc_roadmap_count": 0
        },
        "6b_bridge": {
          "score": 2,
          "top3": [
            "Mantle Native Bridge",
            "LayerZero",
            "Stargate"
          ],
          "pqc_roadmap_count": 0
        },
        "6c_custodian": {
          "score": 2,
          "top3": [
            "Bybit Custody (BitDAO heritage)",
            "Fireblocks (research only)",
            "BitGo"
          ],
          "pqc_roadmap_count": 0
        },
        "6d_rpc_hsm": {
          "score": 2,
          "top3": [
            "Mantle RPC",
            "Alchemy",
            "QuickNode"
          ],
          "pqc_roadmap_count": 0
        }
      },
      "total_artifacts": 1
    },
    "7_governance_coordination": {
      "weight": 0.1,
      "score": 32,
      "sub_scores": {
        "7a_validator_stake_distribution": {
          "score": 5,
          "note": "Centralized Mantle sequencer. EigenDA operators are separate set."
        },
        "7b_upgrade_cadence_under_pressure": {
          "score": 9,
          "note": "BitDAO→Mantle rebrand + MantleDA→EigenDA migration coordinated successfully."
        },
        "7c_named_coordination_lead": {
          "score": 11,
          "note": "Mantle Governance (BIT→MNT token holders via Bybit-aligned DAO). Decent participation."
        },
        "7d_adversarial_coordination_precedent": {
          "score": 7,
          "note": "Treasury governance contentious but functional. 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": 12,
    "after_caps": 12,
    "ci_plus_minus": 12,
    "band": 1,
    "band_name": "Unaware"
  },
  "migration_stage": 0,
  "mosca_inequality": {
    "X_signature_shelf_life_years": "5-10 (BitDAO heritage extends horizon)",
    "Y_migration_time_years_range": "10-15 (L2 + EigenDA dual-dependency)",
    "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": 10,
      "privacy_preserved_pct": 10
    },
    "arrives_slowly_post_migration": {
      "value_preserved_pct": 75,
      "privacy_preserved_pct": 70
    },
    "arrives_slowly_mid_migration": {
      "value_preserved_pct": 30,
      "privacy_preserved_pct": 30
    }
  },
  "burn_vs_rescue_policy": "undeclared",
  "pqc_washing_ratio": 1,
  "vendor_tile_summary": {
    "wallet": {
      "top3": [
        "MetaMask",
        "Rabby",
        "Bybit Wallet"
      ],
      "pqc_roadmap_count": 0
    },
    "bridge": {
      "top3": [
        "Mantle Native Bridge",
        "LayerZero",
        "Stargate"
      ],
      "pqc_roadmap_count": 0
    },
    "custodian": {
      "top3": [
        "Bybit Custody",
        "Fireblocks",
        "BitGo"
      ],
      "pqc_roadmap_count": 0
    },
    "rpc_hsm": {
      "top3": [
        "Mantle RPC",
        "Alchemy",
        "QuickNode"
      ],
      "pqc_roadmap_count": 0
    }
  },
  "narrative_summary": "Mantle is a Bybit-aligned optimistic L2 with EigenDA (migrated from MantleDA). ECDSA + BLS12-381 DA signatures, all Shor-breakable. Large treasury (BitDAO heritage). No PQC activity. Migration architecture benefits from demonstrated EigenDA migration precedent. Band 1 Unaware.",
  "evaluator_notes": "EigenDA migration history is a genuine governance positive — Mantle has shown ability to swap a core infrastructure component. No PQC activity yet. Bybit alignment is a custodial vendor positive if prioritized.",
  "narrative_voiced": "Mantle is the chain that proved it can swap a core piece of infrastructure (MantleDA to EigenDA) without breaking. That is the one muscle a PQC migration actually needs, and it is the one muscle most chains in this batch have never exercised."
}