{ "author": "Arhan Canli", "claim_boundary": "The dividend normalization passes globally, but the lake fails the independent split gate. This artifact opens no returns, spends no hypothesis, and explicitly forbids using the lake for a replay or performance claim.", "content_hash": "sha256:6ed09e42b6e6a744df4dfb3c9bbd927b58ac70a813c9c819a1592daa8afae583", "decision": "CORPORATE_ACTION_VALIDATION_FAILED_SPLIT_BOUNDARIES", "dividend_gate": { "decision": "DIVIDEND_PRICE_CONSISTENCY_PASSED", "passed": true, "summary": { "affected_instruments": 0, "dividend_rows": 167118, "maximum_pre_close_multiple": 0.9836065573770493, "rows_above_full_pre_ex_close": 0, "rows_above_half_pre_ex_close": 64, "rows_without_pre_ex_close": 259 } }, "evidence_date": "2026-08-23", "hypotheses_spent": 0, "lake": "data/corrections/corporate_action_basis_48fcfde04e3c_materialized_v1/data/lake_sharadar", "lineage": { "build_content_hash": "sha256:178c4564f9c5e0b917db752879c08a2f25c3133e614f92f0ecec6af3c33ef1c0", "build_path": "artifacts/audit/sharadar_corporate_action_corrected_lake.json", "build_sha256": "2ff4354d2f569b182901ae1a079270e78438c8fd1e7c35b115e79dd0bc65306a", "corrected_corporate_actions_root": "sha256:d07802568921649fddba5c0a847ef1d0db8a23dcd4f3e65b57a04310173a6e5d", "engine_split_tolerance": 0.3, "engine_split_tolerance_source": "src/alphaforge/backtest/engine.py" }, "required_next_action": "Resolve reciprocal and unexplained split groups with independent source evidence. Prove missing-boundary events cannot become exposed or quarantine their instruments. Do not replay on this lake while the split gate fails.", "return_data_opened": false, "schema": "canli.alphac-sharadar-corrected-corporate-action-validation.v1", "split_gate": { "failures": [ { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2005-06-29 04:00:00+04:00", "instrument_id": "XUSE:CASH:AAWWUSD", "post_open": 30.0, "post_open_ts": "2005-11-09 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 0.1 }, { "classification": "UNEXPLAINED_PRICE_BOUNDARY", "ex_date": "2006-04-01 04:00:00+04:00", "instrument_id": "XUSE:CASH:AAWWUSD", "post_open": 47.1, "post_open_ts": "2006-04-03 04:00:00+04:00", "pre_close": 47.1, "pre_close_ts": "2006-03-31 04:00:00+04:00", "reciprocal_log_error": 1.791759469228055, "source_rows": 1, "stored_log_error": 1.791759469228055, "stored_ratio": 6.0 }, { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2023-09-11 04:00:00+04:00", "instrument_id": "XUSE:CASH:ABATUSD", "post_open": 11.8, "post_open_ts": "2023-09-21 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 0.06667 }, { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2001-04-04 04:00:00+04:00", "instrument_id": "XUSE:CASH:ABBNYUSD", "post_open": 17.0, "post_open_ts": "2001-04-06 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 4.0 }, { "classification": "UNEXPLAINED_PRICE_BOUNDARY", "ex_date": "2005-06-09 04:00:00+04:00", "instrument_id": "XUSE:CASH:ABEVUSD", "post_open": 21.5, "post_open_ts": "2005-06-09 04:00:00+04:00", "pre_close": 42.0, "pre_close_ts": "2005-06-08 04:00:00+04:00", "reciprocal_log_error": 0.8519382399437059, "source_rows": 1, "stored_log_error": 0.4872951263557967, "stored_ratio": 1.2 }, { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "1998-04-28 04:00:00+04:00", "instrument_id": "XUSE:CASH:ABIZQUSD", "post_open": 20.0, "post_open_ts": "1998-05-05 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 3.25 }, { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2011-05-19 04:00:00+04:00", "instrument_id": "XUSE:CASH:ACHCUSD", "post_open": 10.0, "post_open_ts": "2011-11-01 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 100000.0 }, { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2011-11-01 04:00:00+04:00", "instrument_id": "XUSE:CASH:ACHCUSD", "post_open": 10.0, "post_open_ts": "2011-11-01 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 1.7633 }, { 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"MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2004-05-27 04:00:00+04:00", "instrument_id": "XUSE:CASH:WSRUSD", "post_open": 12.0, "post_open_ts": "2010-08-26 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 1.4 }, { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2010-08-24 04:00:00+04:00", "instrument_id": "XUSE:CASH:WSRUSD", "post_open": 12.0, "post_open_ts": "2010-08-26 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 0.33333 }, { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2015-12-30 04:00:00+04:00", "instrument_id": "XUSE:CASH:WTERUSD", "post_open": 5.500032654838359, "post_open_ts": "2018-12-11 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 0.02 }, { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2017-01-09 04:00:00+04:00", "instrument_id": "XUSE:CASH:XAIRUSD", "post_open": 5.852900000000001, "post_open_ts": "2019-05-08 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 0.01 }, { "classification": "UNEXPLAINED_PRICE_BOUNDARY", "ex_date": "2001-03-21 04:00:00+04:00", "instrument_id": "XUSE:CASH:XCEDQUSD", "post_open": 0.812, "post_open_ts": "2001-03-21 04:00:00+04:00", "pre_close": 0.156, "pre_close_ts": "2001-03-20 04:00:00+04:00", "reciprocal_log_error": 3.9522294259061868, "source_rows": 1, "stored_log_error": 0.6529407600819047, "stored_ratio": 0.1 }, { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2010-11-30 04:00:00+04:00", "instrument_id": "XUSE:CASH:XXIIUSD", "post_open": 6.150000000002569, "post_open_ts": "2014-03-11 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 2.782 }, { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2025-10-03 04:00:00+04:00", "instrument_id": "XUSE:CASH:YSSUSD", "post_open": 38.0, "post_open_ts": "2026-01-29 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 0.08818 }, { "classification": "MISSING_TWO_SIDED_PRICE_BOUNDARY", "ex_date": "2024-07-01 04:00:00+04:00", "instrument_id": "XUSE:CASH:ZENAUSD", "post_open": 10.0, "post_open_ts": "2024-10-01 04:00:00+04:00", "pre_close": null, "pre_close_ts": null, "reciprocal_log_error": null, "source_rows": 1, "stored_log_error": null, "stored_ratio": 0.16667 } ], "passed": false, "summary": { "affected_instruments": 401, "consistent": 4189, "failed_or_unverifiable": 473, "missing_two_sided_price_boundary": 361, "reciprocal_ratio_would_verify": 3, "split_groups": 4662, "unexplained_price_boundary": 109 }, "tolerance_absolute_log_error": 0.3 } }