Pith Number

pith:4JQROINS

pith:2018:4JQROINS77ZAZ2NLJPHBKEOHCJ

not attested not anchored not stored refs pending

What is an Ontology?

Fabian Neuhaus

arxiv:1810.09171 v1 · 2018-10-22 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4JQROINS77ZAZ2NLJPHBKEOHCJ}

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	2026-05-18T00:02:40.883692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2611721b2fff20ce9ab4bce1511c7124d8ee49e2ebe6e03d8da3823f934bcdb

Aliases

arxiv: 1810.09171 · arxiv_version: 1810.09171v1 · doi: 10.48550/arxiv.1810.09171 · pith_short_12: 4JQROINS77ZA · pith_short_16: 4JQROINS77ZAZ2NL · pith_short_8: 4JQROINS

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/4JQROINS77ZAZ2NLJPHBKEOHCJ \
  | 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: e2611721b2fff20ce9ab4bce1511c7124d8ee49e2ebe6e03d8da3823f934bcdb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42681eb917e178493aeb53598342382bf5ce03ad120c2cb306024ce863365d46",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2018-10-22T10:47:03Z",
    "title_canon_sha256": "889ca3f789f863b7e1f662e976b1a2b8710155d00edb3923457151d6274d1a6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.09171",
    "kind": "arxiv",
    "version": 1
  }
}