Pith Number

pith:4RDG2Q7K

pith:2009:4RDG2Q7KTB3CYY65F3VE7EYF7J

not attested not anchored not stored refs pending

Interpretations of the Web of Data

Marko A. Rodriguez

arxiv:0905.3378 v2 · 2009-05-20 · cs.AI · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4RDG2Q7KTB3CYY65F3VE7EYF7J}

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	2026-05-18T04:16:13.135285Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4466d43ea98762c63dd2eea4f9305fa4c5719d3930fe37ed86f1cba18051f97

Aliases

arxiv: 0905.3378 · arxiv_version: 0905.3378v2 · doi: 10.48550/arxiv.0905.3378 · pith_short_12: 4RDG2Q7KTB3C · pith_short_16: 4RDG2Q7KTB3CYY65 · pith_short_8: 4RDG2Q7K

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/4RDG2Q7KTB3CYY65F3VE7EYF7J \
  | 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: e4466d43ea98762c63dd2eea4f9305fa4c5719d3930fe37ed86f1cba18051f97

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad6c3a9f448a91782e9b2541647144dc1572390f9b55a813a3362f9c4255e315",
    "cross_cats_sorted": [
      "cs.DL"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "cs.AI",
    "submitted_at": "2009-05-20T19:48:10Z",
    "title_canon_sha256": "9ffc586fd091c1316c22ccee15838ec0f3fb99031779fcaa19d1fee776bd0102"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3378",
    "kind": "arxiv",
    "version": 2
  }
}