Pith Number

pith:B5CQS3PU

pith:2011:B5CQS3PUHWHZJP7DNNBRCRTXJ5

not attested not anchored not stored refs pending

Measuring the level of nuclear activity in Seyfert galaxies and the unification scheme

(2) INAF-Osservatorio di Arcetri, 3) ((1) Indian Institute of Astrophysics, (3) Harvard-Smithsonian Center for Astrophysics, Bangalore, Cambridge, Firenze, Guido Risaliti (2, India, Italy, MA, Prajval Shastri (1), USA), Veeresh Singh (1)

arxiv:1108.3727 v1 · 2011-08-18 · 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{B5CQS3PUHWHZJP7DNNBRCRTXJ5}

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	2026-05-18T04:15:07.576865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f45096df43d8f94bfe36b431146774f67c1bf46eb6f96215315222763a02c90

Aliases

arxiv: 1108.3727 · arxiv_version: 1108.3727v1 · doi: 10.48550/arxiv.1108.3727 · pith_short_12: B5CQS3PUHWHZ · pith_short_16: B5CQS3PUHWHZJP7D · pith_short_8: B5CQS3PU

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/B5CQS3PUHWHZJP7DNNBRCRTXJ5 \
  | 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: 0f45096df43d8f94bfe36b431146774f67c1bf46eb6f96215315222763a02c90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "928bed9c6a92c5d4a20c7f5bcddf55cd149b60e8e773463de9e17490e7687422",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-18T11:49:26Z",
    "title_canon_sha256": "1fe63e4a44e0bc6287696f7598a10228b55f7f85ba59ceec9ee1b30ba5384401"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3727",
    "kind": "arxiv",
    "version": 1
  }
}