Pith Number

pith:5XGF3MAH

pith:2018:5XGF3MAHTMXLBEFQGPBA4WEPT7

not attested not anchored not stored refs pending

Analyzing the activities of visitors of the Leiden Ranking website

Ludo Waltman, Nees Jan van Eck

arxiv:1804.03869 v2 · 2018-04-11 · 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{5XGF3MAHTMXLBEFQGPBA4WEPT7}

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	2026-05-18T00:10:46.538811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edcc5db0079b2eb090b033c20e588f9feb0957af107b5f4cbbf02b567857e18e

Aliases

arxiv: 1804.03869 · arxiv_version: 1804.03869v2 · doi: 10.48550/arxiv.1804.03869 · pith_short_12: 5XGF3MAHTMXL · pith_short_16: 5XGF3MAHTMXLBEFQ · pith_short_8: 5XGF3MAH

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/5XGF3MAHTMXLBEFQGPBA4WEPT7 \
  | 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: edcc5db0079b2eb090b033c20e588f9feb0957af107b5f4cbbf02b567857e18e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8583d7a56344b99d7a0e0fc2c3649c1c66af9da918491bf305a9baa5d580bc1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2018-04-11T08:33:36Z",
    "title_canon_sha256": "4d574aa2b930d47738c3cb0afd8a5ae25d2d7fda88e1de4af9ac208186fe7537"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03869",
    "kind": "arxiv",
    "version": 2
  }
}