Pith Number

pith:BKTKOQ7W

pith:1998:BKTKOQ7W2SACBH4IE57VFNJ4AA

not attested not anchored not stored refs pending

Dark matter in early-type spiral galaxies: the case of NGC 2179 and of NGC 2775

(2) ESO La Silla, (3) Osservatorio Astronomico Padova, (4) Osservatorio Astronomico Trieste, (5) SISSA Trieste), A. Pizzella (2), E. M. Corsini (1), F. Bertola (1), J. C. Vega Beltran (3), J. G. Funes (1), M. Persic (4), M. Sarzi (1), P. Cinzano (1), P. Salucci (5) ((1) Dipartimento Astronomia Padova

arxiv:astro-ph/9809366 v1 · 1998-09-28 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BKTKOQ7W2SACBH4IE57VFNJ4AA}

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	2026-05-18T01:07:37.034510Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0aa6a743f6d480209f88277f52b53c003177d153191aabc1afac6960375391b5

Aliases

arxiv: astro-ph/9809366 · arxiv_version: astro-ph/9809366v1 · doi: 10.48550/arxiv.astro-ph/9809366 · pith_short_12: BKTKOQ7W2SAC · pith_short_16: BKTKOQ7W2SACBH4I · pith_short_8: BKTKOQ7W

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/BKTKOQ7W2SACBH4IE57VFNJ4AA \
  | 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: 0aa6a743f6d480209f88277f52b53c003177d153191aabc1afac6960375391b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a69cae44a696701e8ae14f3223c40a9f385fc1dfd6aee35b38e4a364dc162971",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-09-28T20:33:33Z",
    "title_canon_sha256": "5abb82aaa0384c69d9ffea66273c5fb56f1d366ac06d331d029b6139eca36815"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9809366",
    "kind": "arxiv",
    "version": 1
  }
}