Pith Number

pith:WG5ZP2YZ

pith:2005:WG5ZP2YZP3K735F4QSVUQHDNLA

not attested not anchored not stored refs pending

NGC 7679: an anomalous, composite Seyfert 1 galaxy whose, X-ray luminous AGN vanishes at optical wavelengths

(2) Leiden Observatory, (3) Universita` di Padova, (4) Academia Sinica Taiwan), A. Pizzella (3) ((1) INAF Padova, E. M. Corsini (3), E. V. Held (1), J. Lim (4), L. M. Buson (1), M. Cappellari (2)

arxiv:astro-ph/0510034 v1 · 2005-10-03 · 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{WG5ZP2YZP3K735F4QSVUQHDNLA}

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	2026-05-18T01:07:26.277854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1bb97eb197ed5fdf4bc84ab481c6d5824eb3931d16b804fee4265db8b9a4b31

Aliases

arxiv: astro-ph/0510034 · arxiv_version: astro-ph/0510034v1 · doi: 10.48550/arxiv.astro-ph/0510034 · pith_short_12: WG5ZP2YZP3K7 · pith_short_16: WG5ZP2YZP3K735F4 · pith_short_8: WG5ZP2YZ

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/WG5ZP2YZP3K735F4QSVUQHDNLA \
  | 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: b1bb97eb197ed5fdf4bc84ab481c6d5824eb3931d16b804fee4265db8b9a4b31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7feaed667a24e52bfc397c6dc387ca0eeaa8023868e68359935babedf5b4f4cc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-10-03T10:38:15Z",
    "title_canon_sha256": "0c43f277278d914f620cdf8c2702a07d4ae6a1c174c582d5a77d0719ce110b3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0510034",
    "kind": "arxiv",
    "version": 1
  }
}