Pith Number

pith:GRQLMETJ

pith:2011:GRQLMETJ2GIWJ6FWCMLSSXOVZI

not attested not anchored not stored refs pending

Uncovering Obscured Active Galactic Nuclei in Homogeneously Selected Samples of Seyfert 2 Galaxies

A. Hornschemeier, A. Ptak, L. Martins, P. Sonnentrucker, Stephanie M. LaMassa, T. M. Heckman, V. Wild

arxiv:1101.0853 v1 · 2011-01-04 · 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{GRQLMETJ2GIWJ6FWCMLSSXOVZI}

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	2026-05-18T02:04:13.044413Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3460b61269d19164f8b61317295dd5ca10d5ab55fc32feba45e51c5c716e47a0

Aliases

arxiv: 1101.0853 · arxiv_version: 1101.0853v1 · doi: 10.48550/arxiv.1101.0853 · pith_short_12: GRQLMETJ2GIW · pith_short_16: GRQLMETJ2GIWJ6FW · pith_short_8: GRQLMETJ

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/GRQLMETJ2GIWJ6FWCMLSSXOVZI \
  | 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: 3460b61269d19164f8b61317295dd5ca10d5ab55fc32feba45e51c5c716e47a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6925f94c2c0862e0e0bb310b59e5c4a7257a68118d384990e545da75f7adbeb6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-01-04T23:41:47Z",
    "title_canon_sha256": "2c8ae4a563d44e3d1f823f92684a323f8b83277bf9ebe4f1f111312e159bc013"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.0853",
    "kind": "arxiv",
    "version": 1
  }
}