Pith Number

pith:Y5VXO6OF

pith:1999:Y5VXO6OF7B3IZOUYL6C4DOXR6B

not attested not anchored not stored refs pending

BeppoSAX uncovers a type-2 QSO in the hyperluminous infrared galaxy IRAS 09104+4109

A. Franceschini, E. Palazzi, G.L. Granato, G. Malaguti, L. Bassani, L. Cappi, M. Persic

arxiv:astro-ph/9912127 v1 · 1999-12-07 · 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{Y5VXO6OF7B3IZOUYL6C4DOXR6B}

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	2026-07-04T14:17:23.846592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c76b7779c5f8768cba985f85c1baf1f06180dee66f8e5bed2928661f9e0a7c14

Aliases

arxiv: astro-ph/9912127 · arxiv_version: astro-ph/9912127v1 · doi: 10.48550/arxiv.astro-ph/9912127 · pith_short_12: Y5VXO6OF7B3I · pith_short_16: Y5VXO6OF7B3IZOUY · pith_short_8: Y5VXO6OF

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/Y5VXO6OF7B3IZOUYL6C4DOXR6B \
  | 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: c76b7779c5f8768cba985f85c1baf1f06180dee66f8e5bed2928661f9e0a7c14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ded24d1d7fb48df03f41ea7bfc89e91977f7e8b65e1fefe32924f07d4923c80e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-07T11:26:16Z",
    "title_canon_sha256": "5e2da65e6531d909a7a5a5fb45143c7128b28107e2f84b95ec1d2e1de9e7760f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912127",
    "kind": "arxiv",
    "version": 1
  }
}