Pith Number

pith:H4NCEBUL

pith:2013:H4NCEBULNEKKTKVB33HMSQUFJZ

not attested not anchored not stored refs pending

A near-infrared relationship for estimating black hole masses in active galactic nuclei

(2) Ohio State University, (3) Georgia State University, (4) Harvard-Smithsonian CfA, (5) Western Michigan University), Bradley M. Peterson (2), Hermine Landt (1), Kirk T. Korista (5), Margarita Karovska (4) ((1) Durham University, Martin Elvis (4), Martin J. Ward (1), Misty C. Bentz (3)

arxiv:1303.1923 v1 · 2013-03-08 · 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{H4NCEBULNEKKTKVB33HMSQUFJZ}

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	2026-05-18T01:51:09.798245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f1a22068b6914a9aaa1decec942854e46721e14f75943bb74aa9457c1e9cc32

Aliases

arxiv: 1303.1923 · arxiv_version: 1303.1923v1 · doi: 10.48550/arxiv.1303.1923 · pith_short_12: H4NCEBULNEKK · pith_short_16: H4NCEBULNEKKTKVB · pith_short_8: H4NCEBUL

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/H4NCEBULNEKKTKVB33HMSQUFJZ \
  | 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: 3f1a22068b6914a9aaa1decec942854e46721e14f75943bb74aa9457c1e9cc32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bd53602925bf1cb718f660c53d54295ba6a7d23073b70fad1c3b03fd81af53a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-03-08T09:58:43Z",
    "title_canon_sha256": "40016bda3a5b575bc1a753a791b9c30a5c62d6a9ad3aad63b05cc850b627c7a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.1923",
    "kind": "arxiv",
    "version": 1
  }
}