Pith Number

pith:4NP4DH5J

pith:2011:4NP4DH5JFYHWLCBVZEPBEDWZWY

not attested not anchored not stored refs pending

Conceptual Knowledge Markup Language: The central core

Robert E. Kent

arxiv:1109.1525 v1 · 2011-09-07 · 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{4NP4DH5JFYHWLCBVZEPBEDWZWY}

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	2026-05-18T04:13:55.529975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e35fc19fa92e0f658835c91e120ed9b62c8e25e09b36026d22dcdc5fa48eb98c

Aliases

arxiv: 1109.1525 · arxiv_version: 1109.1525v1 · doi: 10.48550/arxiv.1109.1525 · pith_short_12: 4NP4DH5JFYHW · pith_short_16: 4NP4DH5JFYHWLCBV · pith_short_8: 4NP4DH5J

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/4NP4DH5JFYHWLCBVZEPBEDWZWY \
  | 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: e35fc19fa92e0f658835c91e120ed9b62c8e25e09b36026d22dcdc5fa48eb98c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fbadfa01d847498b6897d151fb12e6d8946c009c516fbc720b63d0a2b81d314",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2011-09-07T18:09:49Z",
    "title_canon_sha256": "9a7390ab511b4c89870d142b835597ccabe114c0c1fda4ef888e97f9cd4cf73b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1525",
    "kind": "arxiv",
    "version": 1
  }
}