Pith Number

pith:U7AYXBLS

pith:1993:U7AYXBLS73UUGIVPH5ZRC27EGY

not attested not anchored not stored refs pending

The Ultraviolet Emission Properties of Five Low-Redshift Active Galactic Nuclei at High Signal to Noise and Spectral Resolution

Ari Laor, Buell T. Jannuzi, Donald P. Schneider (IAS), George F. Hartig (STScI), John N. Bahcall, Richard F. Green (NOAO)

arxiv:astro-ph/9305026 v1 · 1993-05-21 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U7AYXBLS73UUGIVPH5ZRC27EGY}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T04:28:28.283830Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7c18b8572fee94322af3f73116be436335f4eceacbd8147af428b99ed622c94

Aliases

arxiv: astro-ph/9305026 · arxiv_version: astro-ph/9305026v1 · doi: 10.48550/arxiv.astro-ph/9305026 · pith_short_12: U7AYXBLS73UU · pith_short_16: U7AYXBLS73UUGIVP · pith_short_8: U7AYXBLS

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/U7AYXBLS73UUGIVPH5ZRC27EGY \
  | 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: a7c18b8572fee94322af3f73116be436335f4eceacbd8147af428b99ed622c94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0041d443d517298e054e85e765dcdb8fb0b64fc5611dbbe49b84775630ad62b2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1993-05-21T16:40:59Z",
    "title_canon_sha256": "d560c5a535fe381d7c84e4cd0fb8f106566c8640e32ad77fe3991047d699f3d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9305026",
    "kind": "arxiv",
    "version": 1
  }
}