Pith Number

pith:QLNMV2L3

pith:2010:QLNMV2L3ET7J4NDSYM2JNJFGTS

not attested not anchored not stored refs pending

Verification of Object-Oriented Programs: a Transformational Approach

Ernst-Ruediger Olderog, Frank S. de Boer, Krzysztof R. Apt, Stijn de Gouw

arxiv:1004.4656 v3 · 2010-04-26 · cs.LO · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QLNMV2L3ET7J4NDSYM2JNJFGTS}

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	2026-05-18T04:09:25.428101Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82dacae97b24fe9e3472c33496a4a69c9f862fb7a88ee37470f828cf062e1c98

Aliases

arxiv: 1004.4656 · arxiv_version: 1004.4656v3 · doi: 10.48550/arxiv.1004.4656 · pith_short_12: QLNMV2L3ET7J · pith_short_16: QLNMV2L3ET7J4NDS · pith_short_8: QLNMV2L3

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/QLNMV2L3ET7J4NDSYM2JNJFGTS \
  | 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: 82dacae97b24fe9e3472c33496a4a69c9f862fb7a88ee37470f828cf062e1c98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9017f18a0496b9ea52db557665f43598eef827bb75ac13ad1114ea47f9479d96",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2010-04-26T21:02:10Z",
    "title_canon_sha256": "91437a22dbf22f7158d2f125a870c585f16ff3b949bcc2bb560985a76eaa409b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.4656",
    "kind": "arxiv",
    "version": 3
  }
}