Pith Number

pith:YMPA634D

pith:2013:YMPA634DRG4XWEXVSKFBIBIBXP

not attested not anchored not stored refs pending

Verifiable Source Code Documentation in Controlled Natural Language

Alexandre Bergel, Tobias Kuhn

arxiv:1311.2702 v1 · 2013-11-12 · cs.SE · cs.AI · cs.CL · cs.HC · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YMPA634DRG4XWEXVSKFBIBIBXP}

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	2026-05-18T03:07:22.102000Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c31e0f6f8389b97b12f5928a140501bbd29e16d128d28dcd4f28018083f0dcd5

Aliases

arxiv: 1311.2702 · arxiv_version: 1311.2702v1 · doi: 10.48550/arxiv.1311.2702 · pith_short_12: YMPA634DRG4X · pith_short_16: YMPA634DRG4XWEXV · pith_short_8: YMPA634D

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/YMPA634DRG4XWEXVSKFBIBIBXP \
  | 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: c31e0f6f8389b97b12f5928a140501bbd29e16d128d28dcd4f28018083f0dcd5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7be46ced1f8a69c11e132a1be8c0191a610e1c9d3417f47eba043a50becafa8f",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL",
      "cs.HC",
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2013-11-12T07:44:10Z",
    "title_canon_sha256": "efb629db00c7c28b48ed13cde1ac51a646fd986fd3eb91efe2f83dedf00b81e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.2702",
    "kind": "arxiv",
    "version": 1
  }
}