Pith Number

pith:HJV76PO3

pith:1997:HJV76PO3NZ5NI33VOFQZCJ452K

not attested not anchored not stored refs pending

The Narrow Line Region of NGC 4151: a Turbulent Cauldron

2), (2) CNPq Fellow, 3), (3) Affil. to the Astrophys. Div. of ESA, (4) SISSA, A. Capetti (4) ((1) STScI, Brazil, Claudia Winge (1, D. J. Axon (1, F. D. Macchetto (1, Italy), USA

arxiv:astro-ph/9707170 v1 · 1997-07-15 · 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{HJV76PO3NZ5NI33VOFQZCJ452K}

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	2026-05-18T01:40:17.030425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a6bff3ddb6e7ad46f75716191279dd2bea041d7feae2134f06f5237e60e90a1

Aliases

arxiv: astro-ph/9707170 · arxiv_version: astro-ph/9707170v1 · doi: 10.48550/arxiv.astro-ph/9707170 · pith_short_12: HJV76PO3NZ5N · pith_short_16: HJV76PO3NZ5NI33V · pith_short_8: HJV76PO3

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/HJV76PO3NZ5NI33VOFQZCJ452K \
  | 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: 3a6bff3ddb6e7ad46f75716191279dd2bea041d7feae2134f06f5237e60e90a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9dea3806ca543641ddd641028aa6cb868ce13af25f65e5904e7167d1ca2675fc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-07-15T16:33:58Z",
    "title_canon_sha256": "06e21e6c65014eacd8c891b109679a1412d9e5d697f41275a17b2085e8dffd40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9707170",
    "kind": "arxiv",
    "version": 1
  }
}