Fix Croissant FileObject checksums for validation

tools/write_release_metadata.py

@@ -8,6 +8,7 @@ shell tools.
 from __future__ import annotations
 
 import json
+import hashlib
 import os
 import shutil
 from pathlib import Path
@@ -74,7 +75,7 @@ release_data/
 ├── README.md                       # This file
 ├── LICENSE.md                      # Multi-source license + redistribution notes
 ├── CHANGELOG.md                    # Version history
-├── croissant.json                  # Croissant 1.0 metadata (core + RAI)
+├── croissant.json                  # Croissant 1.1 metadata (core + RAI)
 ├── manifest.json                   # Top-level run inventory (machine-readable)
 │
 ├── runs/                           # 28 individual backtest runs
@@ -284,7 +285,7 @@ Track double-blind submission.
 - Two flattened derived tables (`derived/all_metrics.csv`,
   `derived/all_trades.csv`) for easy querying.
 - Reproducibility manifest mirrored from the paper's `latex/audit/`.
-- Croissant 1.0 metadata with core and RAI fields.
+- Croissant 1.1 metadata with core and RAI fields.
 """
 
 
@@ -305,7 +306,21 @@ def copy_build_script() -> None:
 
 
 def write_croissant() -> None:
-    """Croissant 1.0 metadata with core + RAI fields."""
+    """Croissant 1.1 metadata with core + RAI fields."""
+    def md5(path: str) -> str:
+        digest = hashlib.md5()
+        with (RELEASE / path).open("rb") as f:
+            for chunk in iter(lambda: f.read(1024 * 1024), b""):
+                digest.update(chunk)
+        return digest.hexdigest()
+
+    def sha256(path: str) -> str:
+        digest = hashlib.sha256()
+        with (RELEASE / path).open("rb") as f:
+            for chunk in iter(lambda: f.read(1024 * 1024), b""):
+                digest.update(chunk)
+        return digest.hexdigest()
+
     croissant = {
         "@context": {
             "@language": "en",
@@ -315,8 +330,10 @@ def write_croissant() -> None:
             "conformsTo": "dct:conformsTo",
             "cr": "http://mlcommons.org/croissant/",
             "rai": "http://mlcommons.org/croissant/RAI/",
+            "data": "cr:data",
             "dataType": {"@id": "cr:dataType", "@type": "@vocab"},
             "dct": "http://purl.org/dc/terms/",
+            "equivalentProperty": "cr:equivalentProperty",
             "examples": {"@id": "cr:examples", "@type": "@json"},
             "extract": "cr:extract",
             "field": "cr:field",
@@ -331,19 +348,22 @@ def write_croissant() -> None:
             "md5": "cr:md5",
             "parentField": "cr:parentField",
             "path": "cr:path",
+            "prov": "http://www.w3.org/ns/prov#",
             "recordSet": "cr:recordSet",
             "references": "cr:references",
             "regex": "cr:regex",
             "repeated": "cr:repeated",
             "replace": "cr:replace",
             "sc": "https://schema.org/",
+            "samplingRate": "cr:samplingRate",
             "separator": "cr:separator",
+            "sha256": "sc:sha256",
             "source": "cr:source",
             "subField": "cr:subField",
             "transform": "cr:transform"
         },
         "@type": "sc:Dataset",
-        "conformsTo": "http://mlcommons.org/croissant/1.0",
+        "conformsTo": "http://mlcommons.org/croissant/1.1",
         "name": "QuantArena Artifact Bundle",
         "description": (
             "Reproducibility artifacts for QuantArena, a controlled live-market "
@@ -382,7 +402,9 @@ def write_croissant() -> None:
                 "name": "manifest.json",
                 "description": "Top-level run inventory (machine-readable)",
                 "encodingFormat": "application/json",
-                "contentUrl": "manifest.json"
+                "contentUrl": "manifest.json",
+                "md5": md5("manifest.json"),
+                "sha256": sha256("manifest.json")
             },
             {
                 "@type": "cr:FileObject",
@@ -390,7 +412,9 @@ def write_croissant() -> None:
                 "name": "all_metrics.csv",
                 "description": "Long-format flat table of summary metrics across all 28 runs",
                 "encodingFormat": "text/csv",
-                "contentUrl": "derived/all_metrics.csv"
+                "contentUrl": "derived/all_metrics.csv",
+                "md5": md5("derived/all_metrics.csv"),
+                "sha256": sha256("derived/all_metrics.csv")
             },
             {
                 "@type": "cr:FileObject",
@@ -398,7 +422,9 @@ def write_croissant() -> None:
                 "name": "all_trades.csv",
                 "description": "Concatenated per-trade log across all 28 runs",
                 "encodingFormat": "text/csv",
-                "contentUrl": "derived/all_trades.csv"
+                "contentUrl": "derived/all_trades.csv",
+                "md5": md5("derived/all_trades.csv"),
+                "sha256": sha256("derived/all_trades.csv")
             },
             {
                 "@type": "cr:FileObject",
@@ -406,7 +432,9 @@ def write_croissant() -> None:
                 "name": "sector_style_universe.csv",
                 "description": "5x4 sector/style universe (20 US + 20 CN tickers)",
                 "encodingFormat": "text/csv",
-                "contentUrl": "universe/sector_style_universe.csv"
+                "contentUrl": "universe/sector_style_universe.csv",
+                "md5": md5("universe/sector_style_universe.csv"),
+                "sha256": sha256("universe/sector_style_universe.csv")
             },
             {
                 "@type": "cr:FileSet",
@@ -551,13 +579,14 @@ def write_croissant() -> None:
         ),
         "rai:dataLimitations": (
             "Trading frictions (transaction costs, market impact, short-selling, "
-            "borrowing constraints) are not modeled. The 6M live-market window is "
-            "much shorter than typical institutional evaluation horizons. The "
-            "GPT-5.4 backend identifier reflects the API gateway label exposed at "
-            "run time and not a vendor build hash; exact backend reproducibility "
-            "depends on the gateway's routing decisions at run time. The bundle "
-            "redistributes only the derived decision-level data, not the raw "
-            "third-party feeds."
+            "borrowing constraints) are not modeled in the primary runs; the paper "
+            "reports a deterministic post-hoc transaction-cost sensitivity sweep "
+            "over the released trade logs. The 6M live-market window is much "
+            "shorter than typical institutional evaluation horizons. The GPT-5.4 "
+            "backend identifier reflects the API gateway label exposed at run time "
+            "and not a vendor build hash; exact backend reproducibility depends on "
+            "the gateway's routing decisions at run time. The bundle redistributes "
+            "only the derived decision-level data, not the raw third-party feeds."
         ),
         "rai:dataReleaseMaintenancePlan": (
             "v1.0 corresponds to the NeurIPS 2026 E&D Track submission. Future "
@@ -573,7 +602,40 @@ def write_croissant() -> None:
             "of herd behavior. The bundle is explicitly scoped for research and "
             "evaluation; it is not financial advice and should not be interpreted "
             "as evidence of safe or profitable real-world deployment."
-        )
+        ),
+        "rai:hasSyntheticData": False,
+        "prov:wasDerivedFrom": [
+            "Yahoo Finance / yfinance US equity price and corporate-action data",
+            "Tushare China A-share price, fundamental, and news data",
+            "Financial Modeling Prep US fundamentals and news data",
+            "AKShare China macro and policy indicators",
+            "Tavily search-API news retrieval metadata",
+            "LLM backend decision outputs from the controlled QuantArena execution harness"
+        ],
+        "prov:wasGeneratedBy": [
+            {
+                "@type": "prov:Activity",
+                "name": "Controlled backtest execution",
+                "description": (
+                    "The QuantArena harness executed daily decisions from 2025-09-01 "
+                    "to 2026-02-28 for matched US and CN 20-ticker universes, fixing "
+                    "backend, analyst workflow, initial capital, portfolio accounting, "
+                    "and execution rules while varying only the mandate module."
+                )
+            },
+            {
+                "@type": "prov:Activity",
+                "name": "Artifact derivation and anonymized release packaging",
+                "description": (
+                    "Raw run directories were filtered into decision-level artifacts: "
+                    "per-run metrics.json, trades.csv, equity_curve.csv, comparison "
+                    "aggregates, universe definitions, audit manifests, and flattened "
+                    "all_metrics/all_trades tables. Raw third-party OHLCV/news bodies, "
+                    "private credentials, author-identifying repository metadata, and "
+                    "live LLM response logs are excluded."
+                )
+            }
+        ]
     }
     out = RELEASE / "croissant.json"
     out.write_text(json.dumps(croissant, indent=2, ensure_ascii=False))