Pith Number

pith:XGYKSYZR

pith:2013:XGYKSYZRUCYLDNQE4B4JOUGWLA

not attested not anchored not stored refs pending

A low-luminosity type-1 QSO sample: I. Overluminous host spheroidals or undermassive black holes?

2), (2) Deutsches Zentrum f\"ur Luft- und Raumfahrt, 3), (3) Max-Planck-Institut f\"ur Radioastronomie, (4) Observatoire de Paris, (5) ESO Chile, (6) Leibniz-Institut f\"ur Astrophysik, Andreas Eckart (1, Bonn, Dimitri A. Gadotti (5), Gerold Busch (1), Jens Zuther (1), Julia Scharw\"achter (4), LERMA, Lutz Wisotzki (6) ((1) I. Physikalisches Institut, Lydia Moser (1), M\'onica Valencia-S. (1), Potsdam), Sebastian Fischer (1, University of Cologne

arxiv:1310.0272 v2 · 2013-10-01 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XGYKSYZRUCYLDNQE4B4JOUGWLA}

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	2026-05-18T01:47:17.380611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9b0a96331a0b0b1b604e0789750d6583217b5f0f649e66c625554f60c77463f

Aliases

arxiv: 1310.0272 · arxiv_version: 1310.0272v2 · doi: 10.48550/arxiv.1310.0272 · pith_short_12: XGYKSYZRUCYL · pith_short_16: XGYKSYZRUCYLDNQE · pith_short_8: XGYKSYZR

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/XGYKSYZRUCYLDNQE4B4JOUGWLA \
  | 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: b9b0a96331a0b0b1b604e0789750d6583217b5f0f649e66c625554f60c77463f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "959600c0fade1ee5cefc30575236cee5af1e44b9d329f26d9c3226eac883b163",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-10-01T12:53:25Z",
    "title_canon_sha256": "d2d13bd66b0de32c974d1585383c9be487eac8dc6a2cf5162891d3a91c64730f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.0272",
    "kind": "arxiv",
    "version": 2
  }
}