Pith Number

pith:QXT5RJIB

pith:2014:QXT5RJIBQHJ5COVD7Z4XHG3UIO

not attested not anchored not stored refs pending

Delving Into X-ray Obscuration of Type 2 AGN, Near and Far

Andrew F. Ptak, C. Meg Urry, Jianjun Jia, Poshak Gandhi, Stephanie M. LaMassa, Tahir Yaqoob, Timothy M. Heckman

arxiv:1404.0012 v1 · 2014-03-31 · 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{QXT5RJIBQHJ5COVD7Z4XHG3UIO}

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	2026-05-18T01:43:43.651026Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85e7d8a50181d3d13aa3fe79739b744398d6ac4a61dac8280d39b380704f2f56

Aliases

arxiv: 1404.0012 · arxiv_version: 1404.0012v1 · doi: 10.48550/arxiv.1404.0012 · pith_short_12: QXT5RJIBQHJ5 · pith_short_16: QXT5RJIBQHJ5COVD · pith_short_8: QXT5RJIB

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/QXT5RJIBQHJ5COVD7Z4XHG3UIO \
  | 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: 85e7d8a50181d3d13aa3fe79739b744398d6ac4a61dac8280d39b380704f2f56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfb2c74d812f653650b607f63cc52b28fc4c16a91573920628fac274ea63498a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-03-31T20:00:13Z",
    "title_canon_sha256": "42023852b457ab4f7f65d2d2c07b37e0946ce06afd099769e81f1ae92ccb9580"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.0012",
    "kind": "arxiv",
    "version": 1
  }
}