Pith Number

pith:OSAKJTLU

pith:2003:OSAKJTLUIJ3UBCGGSQBQYPXO2Z

not attested not anchored not stored refs pending

On characterising the variability properties of X-ray light curves from active galaxies

2), (2) University of Leicester, (3) UCLA, (4) University of Southampton), Cambridge, P. Uttley (4) ((1) IoA, R. Edelson (3), R. S. Warwick (2), S. Vaughan (1

arxiv:astro-ph/0307420 v1 · 2003-07-24 · 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{OSAKJTLUIJ3UBCGGSQBQYPXO2Z}

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	2026-07-04T17:25:12.478540Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7480a4cd7442774088c694030c3eeed65e827225e5ae463838eddfa26ac8222e

Aliases

arxiv: astro-ph/0307420 · arxiv_version: astro-ph/0307420v1 · doi: 10.48550/arxiv.astro-ph/0307420 · pith_short_12: OSAKJTLUIJ3U · pith_short_16: OSAKJTLUIJ3UBCGG · pith_short_8: OSAKJTLU

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/OSAKJTLUIJ3UBCGGSQBQYPXO2Z \
  | 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: 7480a4cd7442774088c694030c3eeed65e827225e5ae463838eddfa26ac8222e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "313f9823f8a4a9be99f20e841086365f952fa2b89851c0a3faa5c56236200314",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-07-24T11:06:41Z",
    "title_canon_sha256": "68eb2a5e0028519e39513129cf5fd14df9275eac5424209ad66bc100eae093a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0307420",
    "kind": "arxiv",
    "version": 1
  }
}