Pith Number

pith:AOJ5OFRQ

pith:2013:AOJ5OFRQS4VTOJKZF4R3ZF7FLY

not attested not anchored not stored refs pending

Detecting the historical roots of research fields by reference publication year spectroscopy (RPYS)

Andreas Barth, Loet Leydesdorff, Lutz Bornmann, Werner Marx

arxiv:1307.8239 v1 · 2013-07-31 · 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{AOJ5OFRQS4VTOJKZF4R3ZF7FLY}

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	2026-05-18T03:17:01.866164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0393d71630972b3725592f23bc97e55e02c4d80ffa4b766265812538ac9b9563

Aliases

arxiv: 1307.8239 · arxiv_version: 1307.8239v1 · doi: 10.48550/arxiv.1307.8239 · pith_short_12: AOJ5OFRQS4VT · pith_short_16: AOJ5OFRQS4VTOJKZ · pith_short_8: AOJ5OFRQ

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/AOJ5OFRQS4VTOJKZF4R3ZF7FLY \
  | 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: 0393d71630972b3725592f23bc97e55e02c4d80ffa4b766265812538ac9b9563

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "555ee3f484a78768352462236308658a8c071406154b0174eb9a2c2ec681f4bb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2013-07-31T07:38:30Z",
    "title_canon_sha256": "4b817760d9e93dd0b2464ecdf0dfba7c68de82fbfb31702c58e32463664c9e4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.8239",
    "kind": "arxiv",
    "version": 1
  }
}