Pith Number

pith:DDLNEY6E

pith:2018:DDLNEY6ENPEPPQZOYIDQYA5L76

not attested not anchored not stored refs pending

The IFF Foundation for Ontological Knowledge Organization

Robert E. Kent

arxiv:1810.04773 v1 · 2018-10-10 · cs.DL · 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{DDLNEY6ENPEPPQZOYIDQYA5L76}

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	2026-05-18T00:03:35.923968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18d6d263c46bc8f7c32ec2070c03abff9159963e72be5d4625288ed914040a82

Aliases

arxiv: 1810.04773 · arxiv_version: 1810.04773v1 · doi: 10.48550/arxiv.1810.04773 · pith_short_12: DDLNEY6ENPEP · pith_short_16: DDLNEY6ENPEPPQZO · pith_short_8: DDLNEY6E

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/DDLNEY6ENPEPPQZOYIDQYA5L76 \
  | 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: 18d6d263c46bc8f7c32ec2070c03abff9159963e72be5d4625288ed914040a82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "667c5024c0f6f70abcb438c592bd2ac312572d9efafb7780ed584432f7297774",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2018-10-10T23:12:01Z",
    "title_canon_sha256": "1387a01988dd389754d7126a7b254a7e57717bd619ddda4d2ade17d0af790a2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.04773",
    "kind": "arxiv",
    "version": 1
  }
}