Pith Number

pith:2FUR3SDN

pith:2008:2FUR3SDNQG63TWZNZ72YZ2XZAE

not attested not anchored not stored refs pending

LCSH, SKOS and Linked Data

Antoine Isaac, Clay Redding, Dan Krech, Ed Summers

arxiv:0805.2855 v3 · 2008-05-19 · cs.DL · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2FUR3SDNQG63TWZNZ72YZ2XZAE}

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	2026-05-18T03:11:10.085200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1691dc86d81bdb9db2dcff58ceaf90120d78fc29d33e108cfd3ac4ea1148d32

Aliases

arxiv: 0805.2855 · arxiv_version: 0805.2855v3 · doi: 10.48550/arxiv.0805.2855 · pith_short_12: 2FUR3SDNQG63 · pith_short_16: 2FUR3SDNQG63TWZN · pith_short_8: 2FUR3SDN

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/2FUR3SDNQG63TWZNZ72YZ2XZAE \
  | 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: d1691dc86d81bdb9db2dcff58ceaf90120d78fc29d33e108cfd3ac4ea1148d32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d22f56ba0e8dec2cd267cb0d21c24a442abbbc36924fbc712a105edfec7c415b",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "cs.DL",
    "submitted_at": "2008-05-19T13:11:41Z",
    "title_canon_sha256": "8f5c597d9562579c1bee6cc248a6db6f2f419979cbbdc06ada2f6ecebe2d7b02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.2855",
    "kind": "arxiv",
    "version": 3
  }
}