Pith Number

pith:VNNTP72J

pith:2001:VNNTP72JKNVIAVSQV4SSP4YSFQ

not attested not anchored not stored refs pending

Photoionization Models of NGC 346

(2)Instituto de Astronomia, 3) ((1) Instituto de Astrofisica de Canarias, (3) Consejo Superior de Investigaciones Cientificas.), J. E. Beckman (1, M. Peimbert, M. Relano (1), Universidad Nacional Autonoma de Mexico

arxiv:astro-ph/0109113 v1 · 2001-09-07 · 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{VNNTP72JKNVIAVSQV4SSP4YSFQ}

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	2026-05-18T02:40:36.003518Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab5b37ff49536a805650af2527f3122c159959afc5c60b63a6572e28c3ea4bcf

Aliases

arxiv: astro-ph/0109113 · arxiv_version: astro-ph/0109113v1 · doi: 10.48550/arxiv.astro-ph/0109113 · pith_short_12: VNNTP72JKNVI · pith_short_16: VNNTP72JKNVIAVSQ · pith_short_8: VNNTP72J

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/VNNTP72JKNVIAVSQV4SSP4YSFQ \
  | 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: ab5b37ff49536a805650af2527f3122c159959afc5c60b63a6572e28c3ea4bcf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fa2e40af28b713fe59849a912519ea78928e321b7a7886ada7d1b09b9bd3702",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-07T09:51:53Z",
    "title_canon_sha256": "62ae09b1a101d504adee282b7191f5d107d3786bf6efe3dcf51fbb41e369a395"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109113",
    "kind": "arxiv",
    "version": 1
  }
}