Pith Number

pith:XPZOIFIE

pith:2025:XPZOIFIE5ALPVDJQJQP7ZZPVQD

not attested not anchored not stored refs pending

Analysing the coverage of the University of Bologna's bibliographic and citation metadata in OpenCitations collections

Erica Andreose, Ivan Heibi, Leonardo Zilli, Salvatore Di Marzo, Silvio Peroni

arxiv:2501.05821 v2 · 2025-01-10 · 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{XPZOIFIE5ALPVDJQJQP7ZZPVQD}

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	2026-07-05T11:50:29.886371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbf2e41504e816fa8d304c1ffce5f580d8f6a36e771c1faed829d730949238c4

Aliases

arxiv: 2501.05821 · arxiv_version: 2501.05821v2 · doi: 10.48550/arxiv.2501.05821 · pith_short_12: XPZOIFIE5ALP · pith_short_16: XPZOIFIE5ALPVDJQ · pith_short_8: XPZOIFIE

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/XPZOIFIE5ALPVDJQJQP7ZZPVQD \
  | 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: bbf2e41504e816fa8d304c1ffce5f580d8f6a36e771c1faed829d730949238c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "085161087cd3842ee8809de336093e8fce3fe02b16746e884305102fcbfb182e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2025-01-10T10:00:21Z",
    "title_canon_sha256": "6aa5307681403dd30d26b957b12ce46b96bee5ebb6b48071bbcc20380a270822"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.05821",
    "kind": "arxiv",
    "version": 2
  }
}