Pith Number

pith:U454RMB2

pith:1997:U454RMB27V22Z2ZN7QMJIMDT5V

not attested not anchored not stored refs pending

The Unusual Near-Infrared Morphology of the Radio Loud Quasar 4C+09.17

G. Neugebauer (Caltech), K. Matthews (Caltech), L. Armus, M.D. Lehnert (Leiden)

arxiv:astro-ph/9705072 v1 · 1997-05-10 · 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{U454RMB27V22Z2ZN7QMJIMDT5V}

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	2026-05-18T01:40:17.526629Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a73bc8b03afd75aceb2dfc18943073ed4556c8f131ce6fa88bd605fcc79d5060

Aliases

arxiv: astro-ph/9705072 · arxiv_version: astro-ph/9705072v1 · doi: 10.48550/arxiv.astro-ph/9705072 · pith_short_12: U454RMB27V22 · pith_short_16: U454RMB27V22Z2ZN · pith_short_8: U454RMB2

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/U454RMB27V22Z2ZN7QMJIMDT5V \
  | 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: a73bc8b03afd75aceb2dfc18943073ed4556c8f131ce6fa88bd605fcc79d5060

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b3b6bc5da8c313f7f78a556042bd93e1439f572477e0cf23bf1b399e5b02086",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-05-10T01:28:23Z",
    "title_canon_sha256": "9a28f52cf0b368e41537135978aca4a3befaba7cb4e5bb48dc1cc520557a67ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9705072",
    "kind": "arxiv",
    "version": 1
  }
}