FAILURE MAP
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FA-56356 / Auction allocation rules / Open access

Sealed envelope: replay disclosure · case 01

A repeated opening emits the sealed payload again.

Verified by executionVariant 1 · 10 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

A repeated opening emits the sealed payload again.

THE FAILURE

A repeated opening emits the sealed payload again.

Unsuccessful approach: The attempted repair uses [] if x["opened"] and x["reveal_count"] == 1 else x["payloads"][:1]; the explicit regression cases demonstrate that this still violates the stipulated auction rule.

Case contract

Stipulated sealed-bid envelope processing: one bidder, one lot, a commit and reveal phase. A replacement commit invalidates an earlier digest. Reveal payloads are immutable, phase counters are integers, and byte strings are represented by ordinary strings. Output named admission decisions and retained payloads. Named decision replay-disclosure: Suppress payload emission once opened, regardless of replay count.

Why this case matters

Offline administrative auction model for software failure analysis.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(x):
    v0 = x["revealed"] == (x["commits"][-1] if x["commits"] else None)
    v1 = x["commit_round"] < x["reveal_round"] <= x["close"]
    v2 = None if x["withdrawn"] else x["digest"]
    v3 = x["payloads"][:1]
    v4 = next((p for p,v in zip(x["payloads"],x["valid"]) if v),None)
    v5 = x["nonce"] == x["required_nonce"]
    v6 = x["owner"] == x["signer"]
    v7 = x["sealed_value"] if x["opened"] else x["public_value"]
    v8 = x["lot"] == x["reveal_lot"]
    v9 = sum(1 for v in x["valid"] if v)
    return {'replacement-digest':v0,'reveal-phase':v1,'withdrawal-tombstone':v2,'replay-disclosure':v3,'first-valid-reveal':v4,'nonce-binding':v5,'signer-binding':v6,'preopening-secrecy':v7,'lot-binding':v8,'verified-reveal-count':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('opened envelope replay', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': True, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [[], [], [], [], []]), ('two verified envelopes / opened envelope replay', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': True, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [True, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [[], [], [], [], []]), ('normal contract', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('two verified envelopes', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [True, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('valid last envelope', {'digest': 'v2', 'revealed': 'v2', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('first envelope only', {'digest': 'v1', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1'], 'payloads': ['red'], 'valid': [True], 'reveal_count': 1, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('no envelopes', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': [], 'payloads': [], 'valid': [], 'reveal_count': 0, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [[], [], [], [], []]), ('withdrawn before opening', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': True, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('outside reveal round', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 3, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('same-round premature reveal', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 1, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']])]
def vary(value):
 if type(value) is int: return value*N
 if isinstance(value,list): return [vary(v) for v in value]
 if isinstance(value,dict): return {k:(v if k in ['count', 'delivery_index', 'disputed', 'maximum_set', 'minimum_set', 'reveal_count', 'stage', 'threshold', 'waived'] else vary(v)) for k,v in value.items()}
 return value
for label, request, expected in fixtures:
 check(label, solve(vary(request))['replay-disclosure'], expected[N-1])
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
opened envelope replay['red'][]Failed
two verified envelopes / opened envelope replay['red'][]Failed
normal contract['red']['red']Passed
two verified envelopes['red']['red']Passed
valid last envelope['red']['red']Passed
first envelope only['red']['red']Passed
no envelopes[][]Passed
withdrawn before opening['red']['red']Passed
outside reveal round['red']['red']Passed
same-round premature reveal['red']['red']Passed

SHA-256 / 3236057972622f543c7b672e1cc32c60d27c4232f61f14002eb38317ca2774d4

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(x):
    v0 = x["revealed"] == (x["commits"][-1] if x["commits"] else None)
    v1 = x["commit_round"] < x["reveal_round"] <= x["close"]
    v2 = None if x["withdrawn"] else x["digest"]
    v3 = [] if x["opened"] and x["reveal_count"] == 1 else x["payloads"][:1]
    v4 = next((p for p,v in zip(x["payloads"],x["valid"]) if v),None)
    v5 = x["nonce"] == x["required_nonce"]
    v6 = x["owner"] == x["signer"]
    v7 = x["sealed_value"] if x["opened"] else x["public_value"]
    v8 = x["lot"] == x["reveal_lot"]
    v9 = sum(1 for v in x["valid"] if v)
    return {'replacement-digest':v0,'reveal-phase':v1,'withdrawal-tombstone':v2,'replay-disclosure':v3,'first-valid-reveal':v4,'nonce-binding':v5,'signer-binding':v6,'preopening-secrecy':v7,'lot-binding':v8,'verified-reveal-count':v9}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [('opened envelope replay', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': True, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [[], [], [], [], []]), ('two verified envelopes / opened envelope replay', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': True, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [True, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [[], [], [], [], []]), ('normal contract', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('two verified envelopes', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [True, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('valid last envelope', {'digest': 'v2', 'revealed': 'v2', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('first envelope only', {'digest': 'v1', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1'], 'payloads': ['red'], 'valid': [True], 'reveal_count': 1, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('no envelopes', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': [], 'payloads': [], 'valid': [], 'reveal_count': 0, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [[], [], [], [], []]), ('withdrawn before opening', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 2, 'close': 2, 'withdrawn': True, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('outside reveal round', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 3, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']]), ('same-round premature reveal', {'digest': 'v2', 'revealed': 'v1', 'commit_round': 1, 'reveal_round': 1, 'close': 2, 'withdrawn': False, 'opened': False, 'commits': ['v1', 'v2'], 'payloads': ['red', 'blue'], 'valid': [False, True], 'reveal_count': 2, 'nonce': 'n', 'required_nonce': 'n', 'owner': 'alice', 'signer': 'alice', 'sealed_value': 9, 'public_value': 0, 'lot': 'A', 'reveal_lot': 'A'}, [['red'], ['red'], ['red'], ['red'], ['red']])]
def vary(value):
 if type(value) is int: return value*N
 if isinstance(value,list): return [vary(v) for v in value]
 if isinstance(value,dict): return {k:(v if k in ['count', 'delivery_index', 'disputed', 'maximum_set', 'minimum_set', 'reveal_count', 'stage', 'threshold', 'waived'] else vary(v)) for k,v in value.items()}
 return value
for label, request, expected in fixtures:
 check(label, solve(vary(request))['replay-disclosure'], expected[N-1])
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
opened envelope replay['red'][]Failed
two verified envelopes / opened envelope replay['red'][]Failed
normal contract['red']['red']Passed
two verified envelopes['red']['red']Passed
valid last envelope['red']['red']Passed
first envelope only['red']['red']Passed
no envelopes[][]Passed
withdrawn before opening['red']['red']Passed
outside reveal round['red']['red']Passed
same-round premature reveal['red']['red']Passed

SHA-256 / a12c2709ede89c13a4da06def72b4cc5e2b2957345f34bc7ca42d7e4902b7e30

HELD IN THE MEMBER ARCHIVE

The verified repair and its recorded checks are member-only.

This mechanism has 10 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

Every case sharing this mechanism uses the same contract and the same repair, so this one record is held back for all of them.

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Verification & scope

Stipulated toy auction rules, not a venue specification, financial advice, optimization claim, or live trading implementation. Nonnegative integer inputs and internally aligned list fields only. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:46:06.306094+00:00.

Case digest / 251e73f87a972f835c12d05c47e7f751fbe21f7f56ccd2e435a6991dc8eb96b5