Pith Number

pith:XWWOA6RD

pith:2015:XWWOA6RDWHJBY6BGK4VPQHCXBR

not attested not anchored not stored refs pending

A review of the literature on citation impact indicators

Ludo Waltman

arxiv:1507.02099 v3 · 2015-07-08 · 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{XWWOA6RDWHJBY6BGK4VPQHCXBR}

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	2026-05-18T01:20:01.600487Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdace07a23b1d21c7826572af81c570c6b5afbf9e2a029e196977f40bbfeb8fc

Aliases

arxiv: 1507.02099 · arxiv_version: 1507.02099v3 · doi: 10.48550/arxiv.1507.02099 · pith_short_12: XWWOA6RDWHJB · pith_short_16: XWWOA6RDWHJBY6BG · pith_short_8: XWWOA6RD

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/XWWOA6RDWHJBY6BGK4VPQHCXBR \
  | 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: bdace07a23b1d21c7826572af81c570c6b5afbf9e2a029e196977f40bbfeb8fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a553c02ae553d18e9524fdb304edf47d3016d2512808f15c1dae8d67218436ab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2015-07-08T11:21:58Z",
    "title_canon_sha256": "dc4bf91ffd57f3bd64b1bda19fd70a1419f34c8d61f1920d04534faf7ee19cce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.02099",
    "kind": "arxiv",
    "version": 3
  }
}