Pith Number

pith:CDU2ZC6Q

pith:2014:CDU2ZC6QMW7XXIYEVASYHOOJY2

not attested not anchored not stored refs pending

A Brief State of the Art for Ontology Authoring

Brian Davis, Hazem Safwat

arxiv:1406.2903 v2 · 2014-06-11 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CDU2ZC6QMW7XXIYEVASYHOOJY2}

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	2026-05-18T02:49:53.302082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10e9ac8bd065bf7ba304a82583b9c9c6944170265b1bc0a2c939bc64701a605d

Aliases

arxiv: 1406.2903 · arxiv_version: 1406.2903v2 · doi: 10.48550/arxiv.1406.2903 · pith_short_12: CDU2ZC6QMW7X · pith_short_16: CDU2ZC6QMW7XXIYE · pith_short_8: CDU2ZC6Q

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/CDU2ZC6QMW7XXIYEVASYHOOJY2 \
  | 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: 10e9ac8bd065bf7ba304a82583b9c9c6944170265b1bc0a2c939bc64701a605d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a7fa9879fdab9e35940f36da87ac62d19f68f3d4587489093e73b47620750bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2014-06-11T13:47:22Z",
    "title_canon_sha256": "911c9e6a56b9a4a455ac83a2b0d6201859405c4791957d30a0412fb0389ef767"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.2903",
    "kind": "arxiv",
    "version": 2
  }
}