Pith Number

pith:YSKFUA7P

pith:2002:YSKFUA7PXAYI3JX2P5WFQVZRDL

not attested not anchored not stored refs pending

The Nuclear Regions of the Seyfert Galaxy NGC 4151 - Parsec-scale HI Absorption and a Remarkable Radio Jet

A. Pedlar (Jodrell Bank Observatory), Bucknell University), C.G. Mundell (Astrophysics Research Institute, J.F. Gallimore (Department of Physics, J.M. Wrobel (NRAO), Liverpool John Moores University)

arxiv:astro-ph/0209540 v1 · 2002-09-25 · 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{YSKFUA7PXAYI3JX2P5WFQVZRDL}

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	2026-05-18T04:12:01.172271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4945a03efb8308da6fa7f6c5857311ac7a820bee2c90d45f99762c6d910b68b

Aliases

arxiv: astro-ph/0209540 · arxiv_version: astro-ph/0209540v1 · doi: 10.48550/arxiv.astro-ph/0209540 · pith_short_12: YSKFUA7PXAYI · pith_short_16: YSKFUA7PXAYI3JX2 · pith_short_8: YSKFUA7P

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/YSKFUA7PXAYI3JX2P5WFQVZRDL \
  | 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: c4945a03efb8308da6fa7f6c5857311ac7a820bee2c90d45f99762c6d910b68b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2db79cb1415380e1e62f0abcce844f2da36ed0f2592c78e9adf8e709c869567",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-09-25T17:14:31Z",
    "title_canon_sha256": "f09b5e8439c9b562aac3c0f72f6e13070cd1c9499397921c6eb3d536cc3df702"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0209540",
    "kind": "arxiv",
    "version": 1
  }
}