{
  "schema_version": 1,
  "case_study": "polynode-struct-rtds-websocket-benchmark-retest",
  "measured_date": "2026-08-04",
  "headline_core_interval_utc": {
    "from": "2026-08-04T01:10:04.218Z",
    "to": "2026-08-04T01:25:04.324Z"
  },
  "audit_completed_at": "2026-08-04T01:49:01.785Z",
  "provenance": {
    "struct_upstream_repository": "https://github.com/structbuild/polymarket-rtds-vs-struct-benchmark",
    "struct_upstream_base_commit": "be622c1edafb977e76c1126c797b2b01f926f9f9",
    "extended_harness_commit": "4df16e1c2c6a8b51728842b8031d027382910dd0",
    "index_ts_sha256": "1bca4336ec9802f3d3a357e7e90dcd7039d04a304061904d67fd2e00180acd72",
    "analysis_ts_sha256": "739142263587a8d3ac6bd6dba80df56db81fcaf9c755cf6aa41b5ebca6c65e50",
    "runtime": {
      "node": "v24.14.0",
      "struct_sdk": "0.6.7",
      "platform": "linux",
      "arch": "x64",
      "hostname": "polynode",
      "timezone": "Europe/Berlin"
    },
    "source_unchanged_from_august_1": true
  },
  "current_struct_documentation": {
    "rechecked_date": "2026-08-04",
    "room": "polymarket_trades",
    "documented_status_values": [
      "confirmed",
      "pending",
      "all"
    ],
    "documented_all_semantics": "both pending and confirmed",
    "documented_pending_shape": "received_at present; block, confirmed_at, log_index, block_index, order_hash, taker, fee, fee_shares, and fee_pct omitted",
    "references": [
      "https://docs.struct.to/websockets/rooms/trades",
      "https://docs.struct.to/guides/copy-trading-pending-or-confirmed-trades",
      "https://github.com/structbuild/polymarket-rtds-vs-struct-benchmark"
    ]
  },
  "claim_evidence_matrix": [
    {
      "claim": "Struct pending was not observed again on August 4 under its documented subscription.",
      "signal": "Struct trade_stream_update with received_at present and block absent.",
      "lifecycle_stage": "pending / pre-confirmation",
      "join_unit": "transaction hash",
      "denominator": "18,122 transactions that later confirmed in the independent Polygon log window; total observed Struct pending events was also zero.",
      "clock": "process.hrtime.bigint() in the same Node.js process for all live lanes",
      "window": {
        "from": "2026-08-04T01:10:04.218Z",
        "to": "2026-08-04T01:25:04.324Z"
      },
      "controls": [
        "Exact August 1 Struct credential, status=all, 60-second core: zero pending across 1,673 eligible transactions.",
        "Explicit status=pending, 45-second core: zero Struct events across 706 eligible transactions.",
        "Both credentials were accepted, rejected nothing, and produced no auth, credit, or connection-limit close."
      ],
      "supported_wording": "We did not observe Struct pending delivery again on August 4 under the documented request.",
      "limitation": "Confirmed chain logs cannot enumerate pending transactions that never confirm, and the test does not identify why Struct pending was absent."
    },
    {
      "claim": "PolyNode transaction confirmation beat Struct confirmed by 9.265 seconds median in the August 4 headline window.",
      "signal": "PolyNode status_update versus the first Struct confirmed record carrying block.",
      "lifecycle_stage": "confirmed transaction",
      "join_unit": "transaction hash",
      "denominator": "18,122 independently confirmed Polygon transactions",
      "clock": "process.hrtime.bigint() in one process; positive lead means PolyNode first",
      "window": {
        "from": "2026-08-04T01:10:04.218Z",
        "to": "2026-08-04T01:25:04.324Z"
      },
      "evidence": {
        "samples": 18122,
        "left_first": 18122,
        "right_first": 0,
        "ties": 0,
        "left_first_pct": 100,
        "min_lead_ms": 6276.22404,
        "p25_lead_ms": 8695.87882125,
        "median_lead_ms": 9265.1498455,
        "mean_lead_ms": 9312.614115037768,
        "p75_lead_ms": 9919.222368499999,
        "p95_lead_ms": 10844.8252288,
        "max_lead_ms": 20880.951986
      },
      "supported_wording": "PolyNode confirmation arrived first for all 18,122 matched transactions by 9.265 seconds median.",
      "limitation": "This is a point-in-time, same-vantage result rather than a universal latency guarantee."
    },
    {
      "claim": "The measured PolyNode confirmation lead over Struct was 2.34 times the August 1 lead, showing substantial between-window variability in Struct confirmed delivery.",
      "signal": "Cross-date comparison of PolyNode status_update vs Struct confirmed, triangulated against both providers versus RTDS activity.",
      "lifecycle_stage": "confirmed transaction",
      "join_unit": "per-window median over transaction-hash matches",
      "denominator": "18,041 August 1 transactions and 18,122 August 4 transactions in separate 15-minute windows",
      "clock": "same harness, same source hashes, same host, same monotonic-clock method",
      "controls": {
        "polynode_status_update_vs_rtds_median_shift_ms": -38.506458,
        "struct_confirmed_additional_lag_vs_rtds_ms": 5369.982248
      },
      "evidence": {
        "august_1_polynode_lead_ms": 3963.141553,
        "august_4_polynode_lead_ms": 9265.1498455,
        "lead_increase_ms": 5302.008293,
        "lead_growth_factor": 2.33783,
        "lead_increase_pct": 133.782965
      },
      "supported_wording": "Across the two measured windows, Struct confirmed delivery showed substantial variability relative to two otherwise stable comparison lanes.",
      "limitation": "Two dated windows do not prove a universal variance distribution or justify saying Struct is always inconsistent."
    },
    {
      "claim": "PolyNode and Struct both retained complete confirmed coverage after Struct record reconciliation.",
      "signal": "PolyNode trade and Struct confirmed OrderFilled plus mapped OrdersMatched records.",
      "lifecycle_stage": "confirmed fill",
      "join_unit": "transaction hash plus canonical block-global log index",
      "denominator": "50,956 Polygon OrderFilled logs",
      "evidence": {
        "polynode": {
          "unit": "fill",
          "ground_truth": 50956,
          "seen": 50956,
          "missing": 0,
          "coverage_pct": 100,
          "observed_events_total": 53571
        },
        "struct_reconciled": {
          "unit": "fill",
          "ground_truth": 50956,
          "seen": 50956,
          "missing": 0,
          "coverage_pct": 100,
          "observed_events_total": 50956
        },
        "struct_reconciliation": {
          "eligible_struct_confirmed_records": 50956,
          "eligible_struct_orderfilled_events": 32834,
          "eligible_struct_ordersmatched_events": 18122,
          "mapped_by_receipt_log_index": 32834,
          "mapped_orderfilled_by_unique_order_hash_fallback": 0,
          "mapped_ordersmatched_to_orderfilled_by_unique_order_hash": 18122,
          "unmatched": 0,
          "index_order_hash_mismatches": 0
        }
      },
      "supported_wording": "Both providers represented 100% of confirmed fills after exact Struct record reconciliation.",
      "limitation": "Strict OrderFilled-type parity alone is not the correct Struct completeness metric because OrdersMatched is an alternate representation."
    },
    {
      "claim": "RTDS missed 80 eligible transactions during one silent-open socket gap.",
      "signal": "RTDS activity/trades and activity/orders_matched arrivals plus lifecycle watchdog events.",
      "lifecycle_stage": "public activity baseline",
      "join_unit": "transaction hash",
      "denominator": "18,122 independently confirmed Polygon transactions",
      "evidence": {
        "coverage": {
          "unit": "transaction",
          "ground_truth": 18122,
          "seen": 18042,
          "missing": 80,
          "coverage_pct": 99.5585476216753,
          "observed_events_total": 72109
        },
        "missing_blocks": [
          91400687,
          91400688,
          91400689,
          91400690
        ],
        "reconnect_quiet_ms": 5788,
        "last_activity_block": 91400686,
        "first_activity_block_after_recovery": 91400691
      },
      "supported_wording": "RTDS missed 80 eligible transactions in a four-block gap aligned with a silent-open stall and reconnect.",
      "limitation": "RTDS is a timing and continuity lane, not confirmed-event ground truth."
    }
  ],
  "headline": {
    "config": {
      "duration_sec": 900,
      "warmup_sec": 12,
      "confirmation_tail_sec": 30,
      "boundary_guard_blocks": 2,
      "struct_status": "all",
      "struct_trade_types": "unfiltered",
      "rtds_heartbeat": "polymarket-lowercase",
      "rtds_silence_reconnect_sec": 5
    },
    "subscription": {
      "struct": {
        "room": "polymarket_trades",
        "requested": {
          "status": "all",
          "subscribe_all": true
        },
        "acknowledged": {
          "condition_ids": [],
          "market_slugs": [],
          "event_slugs": [],
          "position_ids": [],
          "traders": [],
          "builder_codes": [],
          "trade_types": [],
          "rejected": [],
          "subscribe_all": true,
          "compression": false
        }
      },
      "polynode": {
        "requested": {
          "action": "subscribe",
          "type": "trades"
        },
        "acknowledged": {
          "subscriber_id": "479d70ad-0f14-462b-9414-d55ea3f1313a",
          "subscription_id": "479d70ad-0f14-462b-9414-d55ea3f1313a:0",
          "subscription_type": "trades",
          "type": "subscribed"
        }
      },
      "rtds": {
        "sent": {
          "action": "subscribe",
          "subscriptions": [
            {
              "topic": "activity",
              "type": "trades"
            },
            {
              "topic": "activity",
              "type": "orders_matched"
            }
          ]
        },
        "protocol_has_no_required_ack": true,
        "heartbeat": "polymarket-lowercase",
        "silence_reconnect_sec": 5
      }
    },
    "credential_fingerprints": {
      "struct": "sha256:a9e8b17340a00b69",
      "polynode": "sha256:adfac21aaada19a4",
      "polygon_rpc": "sha256:38bba65ab288e195"
    },
    "chain_ground_truth": {
      "window": {
        "from_block": 91400521,
        "to_block": 91401117,
        "from_block_hash": "0xc53dbebe2208900b8e66a3544f6a5d35a7b1f6924d4db61c80bfb6e74b28c288",
        "to_block_hash": "0x2da733b5111837f9c6c37acad2fe540f7893f09f34a5c7161a0eac7cb5456192",
        "start_tip": 91400519,
        "end_tip": 91401119
      },
      "transactions": 18122,
      "fills": 50956,
      "multi_fill_transactions": 18122,
      "fills_by_version": {
        "v2": 50956
      },
      "fills_by_contract": {
        "0xe2222d279d744050d28e00520010520000310f59": 9749,
        "0xe111180000d2663c0091e4f400237545b87b996b": 41207
      }
    },
    "coverage": {
      "polynode_pending": {
        "unit": "transaction",
        "ground_truth": 18122,
        "seen": 18122,
        "missing": 0,
        "coverage_pct": 100,
        "observed_events_total": 19574
      },
      "polynode_status_update": {
        "unit": "transaction",
        "ground_truth": 18122,
        "seen": 18122,
        "missing": 0,
        "coverage_pct": 100,
        "observed_events_total": 19106
      },
      "polynode_trade_tx": {
        "unit": "transaction",
        "ground_truth": 18122,
        "seen": 18122,
        "missing": 0,
        "coverage_pct": 100,
        "observed_events_total": 53571
      },
      "polynode_trade_fill": {
        "unit": "fill",
        "ground_truth": 50956,
        "seen": 50956,
        "missing": 0,
        "coverage_pct": 100,
        "observed_events_total": 53571
      },
      "struct_pending": {
        "unit": "transaction",
        "ground_truth": 18122,
        "seen": 0,
        "missing": 18122,
        "coverage_pct": 0,
        "observed_events_total": 0
      },
      "struct_confirmed_tx": {
        "unit": "transaction",
        "ground_truth": 18122,
        "seen": 18122,
        "missing": 0,
        "coverage_pct": 100,
        "observed_events_total": 62153
      },
      "struct_confirmed_fill": {
        "unit": "fill",
        "ground_truth": 50956,
        "seen": 32834,
        "missing": 18122,
        "coverage_pct": 64.43598398618417,
        "observed_events_total": 32834
      },
      "struct_confirmed_record_fill": {
        "unit": "fill",
        "ground_truth": 50956,
        "seen": 50956,
        "missing": 0,
        "coverage_pct": 100,
        "observed_events_total": 50956
      },
      "rtds_activity": {
        "unit": "transaction",
        "ground_truth": 18122,
        "seen": 18042,
        "missing": 80,
        "coverage_pct": 99.5585476216753,
        "observed_events_total": 72109
      }
    },
    "latency_ms": {
      "sign": "Each lead is right_arrival - left_arrival. Positive values mean the named left-hand path arrived first.",
      "polynode_pending_vs_status_update": {
        "samples": 18122,
        "left_first": 18122,
        "right_first": 0,
        "ties": 0,
        "left_first_pct": 100,
        "min_lead_ms": 86.815774,
        "p25_lead_ms": 1776.93257375,
        "median_lead_ms": 2215.2312705,
        "mean_lead_ms": 2225.6407900108256,
        "p75_lead_ms": 2659.3331722499997,
        "p95_lead_ms": 3332.0622463,
        "max_lead_ms": 5674.090114
      },
      "polynode_status_update_vs_struct_confirmed": {
        "samples": 18122,
        "left_first": 18122,
        "right_first": 0,
        "ties": 0,
        "left_first_pct": 100,
        "min_lead_ms": 6276.22404,
        "p25_lead_ms": 8695.87882125,
        "median_lead_ms": 9265.1498455,
        "mean_lead_ms": 9312.614115037768,
        "p75_lead_ms": 9919.222368499999,
        "p95_lead_ms": 10844.8252288,
        "max_lead_ms": 20880.951986
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      "polynode_trade_vs_struct_confirmed_record": {
        "samples": 50956,
        "left_first": 50022,
        "right_first": 934,
        "ties": 0,
        "left_first_pct": 98.16704607897009,
        "min_lead_ms": -3017.532794,
        "p25_lead_ms": 8181.5376645,
        "median_lead_ms": 8888.312592,
        "mean_lead_ms": 8583.75761890293,
        "p75_lead_ms": 9626.4668425,
        "p95_lead_ms": 10697.59799375,
        "max_lead_ms": 20833.849838
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      "polynode_pending_vs_rtds": {
        "samples": 18042,
        "left_first": 18042,
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        "min_lead_ms": 90.073158,
        "p25_lead_ms": 1586.48354825,
        "median_lead_ms": 2005.392086,
        "mean_lead_ms": 1991.2073043681423,
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        "p95_lead_ms": 2900.9040497,
        "max_lead_ms": 4899.160232
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      "polynode_status_update_vs_rtds": {
        "samples": 18042,
        "left_first": 5429,
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        "left_first_pct": 30.090899013413146,
        "min_lead_ms": -3041.697728,
        "p25_lead_ms": -495.61680925,
        "median_lead_ms": -209.3043935,
        "mean_lead_ms": -235.60835413235776,
        "p75_lead_ms": 57.2445035,
        "p95_lead_ms": 415.4377159000001,
        "max_lead_ms": 1216.779948
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      "struct_confirmed_vs_rtds": {
        "samples": 18042,
        "left_first": 0,
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        "ties": 0,
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        "min_lead_ms": -21190.571589,
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        "median_lead_ms": -9487.503631,
        "mean_lead_ms": -9544.531727404214,
        "p75_lead_ms": -8916.4140965,
        "p95_lead_ms": -8191.1559265999995,
        "max_lead_ms": -7167.496556
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    },
    "block_window": {
      "from_block": 91400521,
      "to_block": 91401117,
      "from_block_hash": "0xc53dbebe2208900b8e66a3544f6a5d35a7b1f6924d4db61c80bfb6e74b28c288",
      "to_block_hash": "0x2da733b5111837f9c6c37acad2fe540f7893f09f34a5c7161a0eac7cb5456192",
      "start_tip": 91400519,
      "end_tip": 91401119
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    "boundary_hashes_rechecked": true
  },
  "cross_date_comparison": {
    "august_1": {
      "core_interval_utc": {
        "from": "2026-08-01T12:30:08.435Z",
        "to": "2026-08-01T12:45:08.523Z"
      },
      "credential_fingerprint": "sha256:2cc23fecb199f01e",
      "transactions": 18041,
      "fills": 48281,
      "struct_pending_events": 0,
      "polynode_status_update_vs_struct_confirmed": {
        "samples": 18041,
        "left_first": 18041,
        "right_first": 0,
        "ties": 0,
        "left_first_pct": 100,
        "min_lead_ms": 1928.988763,
        "p25_lead_ms": 3443.761508,
        "median_lead_ms": 3963.141553,
        "mean_lead_ms": 3946.7226462353915,
        "p75_lead_ms": 4431.73968,
        "p95_lead_ms": 5083.438531,
        "max_lead_ms": 8317.764211
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      "polynode_trade_vs_struct_confirmed_record": {
        "samples": 48281,
        "left_first": 47796,
        "right_first": 485,
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        "left_first_pct": 98.9954640541828,
        "min_lead_ms": -2187.137525,
        "p25_lead_ms": 3300.296376,
        "median_lead_ms": 3862.266719,
        "mean_lead_ms": 3755.4060889763955,
        "p75_lead_ms": 4377.864276,
        "p95_lead_ms": 5061.075874,
        "max_lead_ms": 8310.50943
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      "polynode_status_update_vs_rtds": {
        "samples": 17777,
        "left_first": 6130,
        "right_first": 11647,
        "ties": 0,
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        "p25_lead_ms": -448.785016,
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        "p75_lead_ms": 114.03751,
        "p95_lead_ms": 427.6532834,
        "max_lead_ms": 957.978005
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      "struct_confirmed_vs_rtds": {
        "samples": 17777,
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        "min_lead_ms": -8397.110466,
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        "median_lead_ms": -4117.521383,
        "mean_lead_ms": -4119.381253131019,
        "p75_lead_ms": -3693.713823,
        "p95_lead_ms": -2963.65036,
        "max_lead_ms": -1965.42777
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      "polynode_pending_vs_rtds": {
        "samples": 17777,
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        "right_first": 0,
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        "left_first_pct": 100,
        "min_lead_ms": 237.325847,
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        "median_lead_ms": 1984.044862,
        "mean_lead_ms": 1971.8837649223128,
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        "max_lead_ms": 4043.447135
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      "rtds_coverage": {
        "unit": "transaction",
        "ground_truth": 18041,
        "seen": 17777,
        "missing": 264,
        "coverage_pct": 98.53666648190233,
        "observed_events_total": 69561
      }
    },
    "august_4": {
      "core_interval_utc": {
        "from": "2026-08-04T01:10:04.218Z",
        "to": "2026-08-04T01:25:04.324Z"
      },
      "credential_fingerprint": "sha256:a9e8b17340a00b69",
      "transactions": 18122,
      "fills": 50956,
      "struct_pending_events": 0,
      "polynode_status_update_vs_struct_confirmed": {
        "samples": 18122,
        "left_first": 18122,
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        "left_first_pct": 100,
        "min_lead_ms": 6276.22404,
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        "median_lead_ms": 9265.1498455,
        "mean_lead_ms": 9312.614115037768,
        "p75_lead_ms": 9919.222368499999,
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      "polynode_trade_vs_struct_confirmed_record": {
        "samples": 50956,
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        "left_first_pct": 98.16704607897009,
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      "polynode_status_update_vs_rtds": {
        "samples": 18042,
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      "struct_confirmed_vs_rtds": {
        "samples": 18042,
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      "polynode_pending_vs_rtds": {
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