Pith Number

pith:PIUYWB4W

pith:2005:PIUYWB4WGUZGEYIFJ4IUG2ORK3

not attested not anchored not stored refs pending

An atlas of Calcium triplet spectra of active galaxies

A. Garcia-Rissmann, H. Schmitt, L.R. Vega, N.V. Asari, R. Cid Fernandes, R.M. Gonzalez Delgado, T. Storchi-Bergmann

arxiv:astro-ph/0502478 v1 · 2005-02-23 · 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{PIUYWB4WGUZGEYIFJ4IUG2ORK3}

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	2026-07-04T15:46:39.728534Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a298b079635326261054f114369d156e80a96b5a04c3c8c755a6b566278bd65

Aliases

arxiv: astro-ph/0502478 · arxiv_version: astro-ph/0502478v1 · doi: 10.48550/arxiv.astro-ph/0502478 · pith_short_12: PIUYWB4WGUZG · pith_short_16: PIUYWB4WGUZGEYIF · pith_short_8: PIUYWB4W

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/PIUYWB4WGUZGEYIFJ4IUG2ORK3 \
  | 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: 7a298b079635326261054f114369d156e80a96b5a04c3c8c755a6b566278bd65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed6cb0bb94b1bb4389da57ecc81735d46f77ebb7d1f9711a2807d03114b4da3e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-02-23T11:06:02Z",
    "title_canon_sha256": "27742739b2d8ab208602ccddef68c0afa1cd902dd9b3f4fdd7affba35f80ff41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0502478",
    "kind": "arxiv",
    "version": 1
  }
}