receipt --jinja-d5f49f5c

jinja-d5f49f5c

jinja · schema sweverify/1

falsified

claim --vs-- effect

Claim: the system asserted it fixed the bug (claimed_ok: true, a non-empty patch).
Effect: test failed (test_passed: false).

4 failed, 29 passed in 0.08s

Reason: agent claimed fixed but the test still fails — claim-vs-effect gap

Model under test: DeepSeek V4 (deepseek-chat) Reconstructed from the harvest round: this receipt predates the schema carrying a model field.

Verify it yourself

This runs entirely in your browser. It re-derives the content address from the raw record and checks the Ed25519 signature. No request to us, nothing to trust.

$ awaiting verification…

The signed receipt

record_hash (sha-256 content address) ba27b0c49a352a3070ea57652eb520063ab299670525e34be0815ec23198d634

signature (ed25519)

39996f35b45c9ec818c36fc7e973c6d61767ca7a92f71dd632deb29269d3e7ca56d21e960a9becf4900c9d1a3ca9983b9ca0632e960ec6ea042899221ba19e05

key_id 251b14346af43d1d

timestamp (rfc 3161, independent TSA) 2026-09-14T10:21:58Z · https://freetsa.org/tsr · attached after publication

This mark is drawn from the key that signed this receipt. Key f009410a: change the key, change the mark.

Download raw receipt JSON →

Canonical record

This is the exact payload the hash is computed over: {schema, outcome}, serialized with sorted keys and no whitespace.

Show canonical record

{
  "schema": "sweverify/1",
  "outcome": {
    "instance": "jinja-d5f49f5c",
    "repo": "jinja",
    "problem": "Fixes #1448: Revert Undefined.__contains__ to 2.x behaviour",
    "patch": "diff --git a/src/jinja2/runtime.py b/src/jinja2/runtime.py\nindex 87bb1327..d40a03fb 100644\n--- a/src/jinja2/runtime.py\n+++ b/src/jinja2/runtime.py\n@@ -915,7 +915,7 @@ class Undefined:\n     __floordiv__ = __rfloordiv__ = _fail_with_undefined_error\n     __mod__ = __rmod__ = _fail_with_undefined_error\n     __pos__ = __neg__ = _fail_with_undefined_error\n-    __call__ = __getitem__ = __contains__ = _fail_with_undefined_error\n+    __call__ = __getitem__ = _fail_with_undefined_error\n     __lt__ = __le__ = __gt__ = __ge__ = _fail_with_undefined_error\n     __int__ = __float__ = __complex__ = _fail_with_undefined_error\n     __pow__ = __rpow__ = _fail_with_undefined_error\n@@ -935,6 +935,9 @@ class Undefined:\n     def __len__(self) -> int:\n         return 0\n \n+    def __contains__(self, _: t.Any) -> bool:\n+        return False\n+\n     def __iter__(self) -> t.Iterator[t.Any]:\n         yield from ()\n \n@@ -1091,6 +1094,7 @@ class StrictUndefined(Undefined):\n     __slots__ = ()\n     __iter__ = __str__ = __len__ = Undefined._fail_with_undefined_error\n     __eq__ = __ne__ = __bool__ = __hash__ = Undefined._fail_with_undefined_error\n+    __contains__ = Undefined._fail_with_undefined_error\n \n \n # Remove slots attributes, after the metaclass is applied they are",
    "claimed_ok": true,
    "test_passed": false,
    "verdict": "falsified",
    "reason": "agent claimed fixed but the test still fails — claim-vs-effect gap",
    "test_output": "FAILED tests/test_api.py::TestUndefined::test_chainable_undefined - Failed: D...\nFAILED tests/test_api.py::TestUndefined::test_debug_undefined - Failed: DID N...\nFAILED tests/test_api.py::TestUndefined::test_strict_undefined - Failed: DID ...\n4 failed, 29 passed in 0.08s"
  }
}

Verify offline (Python)

import json, hashlib
from cryptography.hazmat.primitives import serialization

receipt = json.load(open("jinja-d5f49f5c.json"))

# 1. content address: sha256 over the canonical record
payload = {"schema": receipt["schema"], "outcome": receipt["outcome"]}
canonical = json.dumps(payload, sort_keys=True, separators=(",", ":")).encode()
assert hashlib.sha256(canonical).hexdigest() == receipt["record_hash"]

# 2. Ed25519 signature over that hash
pub = serialization.load_pem_public_key(receipt["public_key_pem"].encode())
pub.verify(bytes.fromhex(receipt["signature"]), receipt["record_hash"].encode())

# 3. the master note, when present. Receipts published before the seal existed
#    carry no note and verify on their own — a missing note is not an error.
cert = receipt.get("key_cert")
if cert:
    body = {k: v for k, v in cert.items() if k != "signature"}
    root = serialization.load_pem_public_key(cert["root_public_key"].encode())
    root.verify(bytes.fromhex(cert["signature"]),
                json.dumps(body, sort_keys=True, separators=(",", ":")).encode())
    # the note must be about THIS receipt's key, not some other valid key
    assert cert["subkey_public_key"] == receipt["public_key_pem"]
    # and the receipt must claim a time inside the key's window
    signed_at = receipt.get("outcome", {}).get("signed_at")
    if signed_at:
        assert cert["not_before"] <= signed_at <= cert["not_after"]
print("verified")

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