Pith Number

pith:NDT52XJI

pith:2011:NDT52XJINQHNEENR4KVDKMKCE3

not attested not anchored not stored refs pending

A New Diagnostic of Active Galactic Nuclei: Revealing Highly-Absorbed Systems at Redshift>0.3

(2) NOAO, (3) Durham University, (4) Indiana University), David M. Alexander (3), Mark Dickinson (2), Samir Salim (4) ((1) Steward Observatory, St\'ephanie Juneau (1), University of Arizona

arxiv:1105.3194 v1 · 2011-05-16 · 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{NDT52XJINQHNEENR4KVDKMKCE3}

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	2026-05-18T02:01:57.692998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68e7dd5d286c0ed211b1e2aa35314226d2a464737395378dd013dd105e82d15e

Aliases

arxiv: 1105.3194 · arxiv_version: 1105.3194v1 · doi: 10.48550/arxiv.1105.3194 · pith_short_12: NDT52XJINQHN · pith_short_16: NDT52XJINQHNEENR · pith_short_8: NDT52XJI

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/NDT52XJINQHNEENR4KVDKMKCE3 \
  | 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: 68e7dd5d286c0ed211b1e2aa35314226d2a464737395378dd013dd105e82d15e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eeb2df9826e16611be66efddf0725fcb235944b27de9356636e8c024a23d42b0",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-05-16T20:00:04Z",
    "title_canon_sha256": "6b8668d87d290adcf78a9dbe09cc45c96862fbdae1f9fca1da71bcb97021e196"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.3194",
    "kind": "arxiv",
    "version": 1
  }
}