Pith Number

pith:NSOPQ2XK

pith:2013:NSOPQ2XKEXVFP7B462JTNWKVH5

not attested not anchored not stored refs pending

Kleene Algebra with Tests and Coq Tools for While Programs

Damien Pous (LIP)

arxiv:1302.1737 v1 · 2013-02-07 · cs.LO · cs.MS · 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{NSOPQ2XKEXVFP7B462JTNWKVH5}

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	2026-05-18T03:34:14.755567Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c9cf86aea25ea57fc3cf69336d9553f436f50b1598ec09120cae4699cc90fca

Aliases

arxiv: 1302.1737 · arxiv_version: 1302.1737v1 · doi: 10.48550/arxiv.1302.1737 · pith_short_12: NSOPQ2XKEXVF · pith_short_16: NSOPQ2XKEXVFP7B4 · pith_short_8: NSOPQ2XK

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/NSOPQ2XKEXVFP7B462JTNWKVH5 \
  | 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: 6c9cf86aea25ea57fc3cf69336d9553f436f50b1598ec09120cae4699cc90fca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66a824fcd0b42f09b611a6b7917b2209122203f2d70a0aeaf73fc029f9af2c9e",
    "cross_cats_sorted": [
      "cs.MS",
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-02-07T13:15:45Z",
    "title_canon_sha256": "3a2580daca2eacb762f1a5b7241049d78ffdda7a6a4d2e94fc6651f376a018c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.1737",
    "kind": "arxiv",
    "version": 1
  }
}