Pith Number

pith:NWDAVGF3

pith:2012:NWDAVGF3Q3XF7XLASPVBCAX2IU

not attested not anchored not stored refs pending

Simultaneous X-ray and optical observations of true Type 2 Seyfert galaxies

Amalia Corral, Angel Ruiz, Anna Wolter, Fabio La Franca, Francesca Onori, Francesca Panessa, Francisco J. Carrera, Giorgio Matt, Lorenzo Monaco, Murray Brightman, Stefano Bianchi, Xavier Barcons

arxiv:1209.0274 v1 · 2012-09-03 · astro-ph.GA · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NWDAVGF3Q3XF7XLASPVBCAX2IU}

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	2026-05-18T01:54:48.213103Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d860a98bb86ee5fdd6093ea1102fa452c56f834cba7176d643747bae27bef0e

Aliases

arxiv: 1209.0274 · arxiv_version: 1209.0274v1 · doi: 10.48550/arxiv.1209.0274 · pith_short_12: NWDAVGF3Q3XF · pith_short_16: NWDAVGF3Q3XF7XLA · pith_short_8: NWDAVGF3

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/NWDAVGF3Q3XF7XLASPVBCAX2IU \
  | 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: 6d860a98bb86ee5fdd6093ea1102fa452c56f834cba7176d643747bae27bef0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15c8885b0885f4499fd98fa7e44f29a031a3b74c5730ac9a684d9895df72f847",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-09-03T08:50:54Z",
    "title_canon_sha256": "334edc766e5a922bfd9b95fc6df87786f5f8a66e01ef93d0752e0ac9c01edf8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.0274",
    "kind": "arxiv",
    "version": 1
  }
}