Pith Number

pith:QYJXOWF5

pith:2006:QYJXOWF5Z6WODF2ALAX5CV2L7Y

not attested not anchored not stored refs pending

The Mass of the Central Black Hole in the Seyfert Galaxy NGC 4151

2), (2) Department of Mechanical Engineering, 3), (3) NRC Herzberg Institute of Astrophysics), Bradley M. Peterson (1) ((1) Department of Astronomy, Christopher A. Onken (1, Kyle G. Metzroth (1, The Ohio State University

arxiv:astro-ph/0605038 v1 · 2006-05-01 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QYJXOWF5Z6WODF2ALAX5CV2L7Y}

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	2026-05-18T04:29:04.765499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86137758bdcface19740582fd1574bfe1ddcaf9056c47437127e7a483ecadaa3

Aliases

arxiv: astro-ph/0605038 · arxiv_version: astro-ph/0605038v1 · doi: 10.48550/arxiv.astro-ph/0605038 · pith_short_12: QYJXOWF5Z6WO · pith_short_16: QYJXOWF5Z6WODF2A · pith_short_8: QYJXOWF5

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/QYJXOWF5Z6WODF2ALAX5CV2L7Y \
  | 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: 86137758bdcface19740582fd1574bfe1ddcaf9056c47437127e7a483ecadaa3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "557bbedbe2d48168f5b6dffff2bf515c3285bd925f485bbda23f3814e8aff755",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-05-01T20:02:46Z",
    "title_canon_sha256": "084ba3d0737fcb0cb4c81b80783350b6554570dc5eac83d0a87eda07c675d7af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0605038",
    "kind": "arxiv",
    "version": 1
  }
}