Pith Number

pith:QE3ROBWK

pith:2015:QE3ROBWKYQEBDCLAZGIQMNNESL

not attested not anchored not stored refs pending

Field-normalized citation impact indicators and the choice of an appropriate counting method

Ludo Waltman, Nees Jan van Eck

arxiv:1501.04431 v1 · 2015-01-19 · 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{QE3ROBWKYQEBDCLAZGIQMNNESL}

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	2026-05-18T02:29:09.013383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81371706cac408118960c9910635a492fadb14a48b8b530c9efeee1a923e0c72

Aliases

arxiv: 1501.04431 · arxiv_version: 1501.04431v1 · doi: 10.48550/arxiv.1501.04431 · pith_short_12: QE3ROBWKYQEB · pith_short_16: QE3ROBWKYQEBDCLA · pith_short_8: QE3ROBWK

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/QE3ROBWKYQEBDCLAZGIQMNNESL \
  | 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: 81371706cac408118960c9910635a492fadb14a48b8b530c9efeee1a923e0c72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b5d9197f1123cf39f6c0f5a328d36abbaf065d8c1ebfb6d2b1228718d791e39",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2015-01-19T09:31:36Z",
    "title_canon_sha256": "0d5c915c2f2cf19c7d917706ff59bc07c3eda2170505120e76285f6735cb0ceb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.04431",
    "kind": "arxiv",
    "version": 1
  }
}