{
  "chain_slug": "near",
  "name": "NEAR Protocol",
  "scorecard_profile": "L1",
  "evaluated_at": "2026-04-18",
  "evaluator": "layerqu-v2-scoring-agent-4",
  "v1_reference": "chainscreen-v1-archive",
  "dimensions": {
    "1_cryptographic_exposure": {
      "weight": 0.15,
      "score": 35,
      "sub_scores": {
        "1a_primitive_inventory": {
          "score": 12,
          "primitives_named": [
            "Ed25519 (tx + validator)",
            "SHA-256"
          ],
          "evidence": [
            "NEAR docs: https://docs.near.org"
          ],
          "note": "Minimal inventory, only Ed25519 + SHA-256 published."
        },
        "1b_shor_grover_pq_tag": {
          "score": 15,
          "tags": {
            "Ed25519": "Shor-break",
            "SHA-256": "Grover-weaken"
          },
          "evidence": [
            "NEAR chain documentation"
          ]
        },
        "1c_algorithm_family_diversity": {
          "score": 0,
          "families_represented": 0,
          "families": [],
          "note": "No PQC families in core."
        },
        "1d_nist_security_category": {
          "score": 2,
          "mappings": {
            "Ed25519": "128-bit classical",
            "SHA-256": "128-bit post-quantum"
          }
        },
        "1e_implementation_quality": {
          "score": 6,
          "formal_verification": "none",
          "constant_time": "Ed25519 standard",
          "libraries": [
            "ed25519-dalek in nearcore"
          ],
          "evidence": [
            "https://github.com/near/nearcore"
          ]
        }
      },
      "total_artifacts": 3
    },
    "2_hndl_exposure": {
      "weight": 0.1,
      "score": 22,
      "sub_scores": {
        "2a_active_key": {
          "score": 5,
          "note": "Implicit accounts: Ed25519 pubkey = account. 90-100% exposure. Named accounts also store pubkey on-chain."
        },
        "2b_cold_key": {
          "score": 5,
          "note": "Same 100% exposure via access-key system."
        },
        "2c_sig_long_term": {
          "score": 7,
          "note": "Tx-oriented chain; short validity window typical."
        },
        "2d_encryption_conf": {
          "score": 5,
          "note": "Standard TLS — no PQC for RPC or validator comms."
        }
      },
      "total_artifacts": 1
    },
    "3_metadata_privacy_exposure": {
      "weight": 0.13,
      "score": 34,
      "sub_scores": {
        "3a_graph_visibility": {
          "score": 5,
          "note": "Pseudonymous, human-readable account names improve observability further."
        },
        "3b_rpc_concentration": {
          "score": 9,
          "note": "Pagoda/FastNEAR RPC concentration."
        },
        "3c_bridge_correlation": {
          "score": 11,
          "note": "Rainbow Bridge and Aurora link tx flows."
        },
        "3d_retroactive_deanon": {
          "score": 9,
          "note": "No native privacy — no retroactive risk above baseline."
        }
      },
      "total_artifacts": 1
    },
    "4_migration_architecture": {
      "weight": 0.1,
      "score": 40,
      "sub_scores": {
        "4a_crypto_agility": {
          "score": 8,
          "note": "NEAR runtime upgrades are coordinated via Foundation. Access-key system is pluggable.",
          "evidence": [
            "https://docs.near.org/concepts/basics/accounts/access-keys"
          ]
        },
        "4b_aa_key_rotation": {
          "score": 18,
          "note": "Native NEAR accounts are AA-like: function-call access keys, full-access keys, key rotation fully supported. Best-in-class.",
          "evidence": [
            "https://docs.near.org/concepts/basics/accounts/access-keys"
          ]
        },
        "4c_hard_fork_track_record": {
          "score": 8,
          "note": "Nightshade 2.0 shipped smoothly. 5 years 100% uptime."
        },
        "4d_hybrid_deployment_readiness": {
          "score": 6,
          "note": "Access-key scheme could theoretically add PQC keys but no hybrid envelope architected."
        }
      },
      "total_artifacts": 3
    },
    "5_deployment_execution": {
      "weight": 0.22,
      "score": 2,
      "sub_scores": {
        "5a_mainnet_pqc_pct": {
          "score": 0,
          "mainnet_pqc_pct": 0,
          "evidence": [],
          "note": "No mainnet PQC traffic."
        },
        "5b_pqc_code_in_consensus": {
          "score": 0,
          "loc_or_bytes": 0
        },
        "5c_validator_pqc_keys": {
          "score": 0,
          "pct": 0
        },
        "5d_published_milestones": {
          "score": 0,
          "count": 0,
          "milestones": []
        },
        "5e_pqc_washing_delta": {
          "score": 2,
          "ratio": 1,
          "note": "No announcements."
        }
      },
      "total_artifacts": 0
    },
    "6_supply_chain_vendor_readiness": {
      "weight": 0.22,
      "score": 5,
      "sub_scores": {
        "6a_wallet": {
          "score": 2,
          "top3": [
            "MyNearWallet",
            "HERE Wallet",
            "Meteor Wallet"
          ],
          "pqc_roadmap_count": 0
        },
        "6b_bridge": {
          "score": 1,
          "top3": [
            "Rainbow Bridge",
            "Aurora Bridge",
            "LayerZero"
          ],
          "pqc_roadmap_count": 0
        },
        "6c_custodian": {
          "score": 1,
          "top3": [
            "Coinbase Custody",
            "BitGo",
            "Fireblocks"
          ],
          "pqc_roadmap_count": 0
        },
        "6d_rpc_hsm": {
          "score": 1,
          "top3": [
            "Pagoda",
            "FastNEAR",
            "Ankr"
          ],
          "pqc_roadmap_count": 0
        }
      },
      "total_artifacts": 1
    },
    "7_governance_coordination": {
      "weight": 0.08,
      "score": 45,
      "sub_scores": {
        "7a_validator_stake_distribution": {
          "score": 10,
          "note": "Estimated Nakamoto coefficient 8-12."
        },
        "7b_upgrade_cadence_under_pressure": {
          "score": 15,
          "note": "Foundation coordinates rapid upgrades. 5-year clean uptime."
        },
        "7c_named_coordination_lead": {
          "score": 13,
          "note": "NEAR Foundation (Switzerland)."
        },
        "7d_adversarial_coordination_precedent": {
          "score": 7,
          "note": "No PQC adversarial precedent; chain never faced a crypto-break scenario."
        }
      },
      "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 (Dim 5, Dim 6 <3 artifacts → ×0.5)",
    "Casado (4 tiles pqc=0 → migration_stage max 3)",
    "Hybrid gate FAIL → QRI cap 60"
  ],
  "qri": {
    "raw": 18,
    "after_caps": 16,
    "ci_plus_minus": 15,
    "band": 2,
    "band_name": "Acknowledged"
  },
  "migration_stage": 0,
  "mosca_inequality": {
    "X_signature_shelf_life_years": "5-10 (Ed25519 EOA-like)",
    "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": 5,
      "privacy_preserved_pct": 10
    },
    "arrives_slowly_post_migration": {
      "value_preserved_pct": 80,
      "privacy_preserved_pct": 75
    },
    "arrives_slowly_mid_migration": {
      "value_preserved_pct": 35,
      "privacy_preserved_pct": 35
    }
  },
  "burn_vs_rescue_policy": "undeclared",
  "pqc_washing_ratio": 1,
  "vendor_tile_summary": {
    "wallet": {
      "top3": [
        "MyNearWallet",
        "HERE Wallet",
        "Meteor Wallet"
      ],
      "pqc_roadmap_count": 0
    },
    "bridge": {
      "top3": [
        "Rainbow Bridge",
        "Aurora Bridge",
        "LayerZero"
      ],
      "pqc_roadmap_count": 0
    },
    "custodian": {
      "top3": [
        "Coinbase Custody",
        "BitGo",
        "Fireblocks"
      ],
      "pqc_roadmap_count": 0
    },
    "rpc_hsm": {
      "top3": [
        "Pagoda",
        "FastNEAR",
        "Ankr"
      ],
      "pqc_roadmap_count": 0
    }
  },
  "narrative_summary": "NEAR scores Band 2 (Acknowledged) on awareness only. Ed25519 across tx + validator, SHA-256 hashing — no PQC in core or testnet. NEAR's structural advantage is account abstraction: native access-key rotation means a PQC migration is architecturally feasible via access keys, NOT via account redesign. Despite this edge, zero PQC code, zero roadmap, zero milestones published.",
  "evaluator_notes": "Native AA/access keys scored 18/25 on sub-score 4b — strongest migration architecture feature in batch alongside Polkadot. But Dim 5/6 voids dominate; chain is architecturally ready but operationally zero.",
  "narrative_voiced": "NEAR has the cleanest key-rotation architecture in the batch and zero deployed PQC to rotate to. The access-key system means a migration could happen without redesigning accounts. The awkward part is that architectural readiness and operational readiness are not the same thing, and NEAR has one of them."
}