Pith Number

pith:2Q37FEOF

pith:2025:2Q37FEOF5AWKHIDTCGAQMGQJKB

not attested not anchored not stored refs pending

A Taxonomy of Real-World Defeaters in Safety Assurance Cases

Michael C. Hunter, Myra B. Cohen, Robyn R. Lutz, Usman Gohar

arxiv:2502.00238 v1 · 2025-02-01 · cs.SE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2Q37FEOF5AWKHIDTCGAQMGQJKB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Automated Repair of Requirements for Cyber-Physical Systems in Simulink Requirements Tables

Receipt and verification

First computed	2026-07-05T10:08:30.963959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d437f291c5e82ca3a0731181061a09507320bcfe25642bea926eaeead1fbf9a8

Aliases

arxiv: 2502.00238 · arxiv_version: 2502.00238v1 · doi: 10.48550/arxiv.2502.00238 · pith_short_12: 2Q37FEOF5AWK · pith_short_16: 2Q37FEOF5AWKHIDT · pith_short_8: 2Q37FEOF

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/2Q37FEOF5AWKHIDTCGAQMGQJKB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: d437f291c5e82ca3a0731181061a09507320bcfe25642bea926eaeead1fbf9a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2cee8423eb3a7f0d655e95c4d7b8da5226d499b79b40dc406a517d14864e454",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2025-02-01T00:38:41Z",
    "title_canon_sha256": "c2274dacec2c13402bb833dbe1197199cb178a5a834520c1a7602f316b2312ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.00238",
    "kind": "arxiv",
    "version": 1
  }
}