Pith Number

pith:HMZQD2AC

pith:2010:HMZQD2ACY2RFGA22ZXLNMUNOXX

not attested not anchored not stored refs pending

Formalization and Validation of Safety-Critical Requirements

Alessandro Cimatti, Angelo Susi, Marco Roveri, Stefano Tonetta

arxiv:1003.1741 v2 · 2010-03-08 · 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{HMZQD2ACY2RFGA22ZXLNMUNOXX}

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.

Receipt and verification

First computed	2026-05-18T03:52:28.628145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b3301e802c6a253035acdd6d651aebdf1c27880f82c468ee865ee4fd1ec3fb1

Aliases

arxiv: 1003.1741 · arxiv_version: 1003.1741v2 · doi: 10.48550/arxiv.1003.1741 · pith_short_12: HMZQD2ACY2RF · pith_short_16: HMZQD2ACY2RFGA22 · pith_short_8: HMZQD2AC

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/HMZQD2ACY2RFGA22ZXLNMUNOXX \
  | 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: 3b3301e802c6a253035acdd6d651aebdf1c27880f82c468ee865ee4fd1ec3fb1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6b4afc62ec09ff307d3cbe6b41cae858e4738ad0a04afb91d408345a3e3d44c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2010-03-08T22:05:18Z",
    "title_canon_sha256": "f85d154faf6dcba80c9c835e400e20467f28eb7b1002c26936a49b843e184c74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.1741",
    "kind": "arxiv",
    "version": 2
  }
}