Pith Number

pith:A7VCQYP6

pith:2003:A7VCQYP6AZPQAZHHBPHY5ABLJW

not attested not anchored not stored refs pending

Early stages of Nitrogen enrichment in galaxies: Clues from measurements in damped Lyman alpha systems

C. Peroux, G. Vladilo, M. Centurion, P. Molaro, S. A. Levshakov, V. D'Odorico

arxiv:astro-ph/0302032 v1 · 2003-02-03 · 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{A7VCQYP6AZPQAZHHBPHY5ABLJW}

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	2026-05-18T04:21:41.961256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07ea2861fe065f0064e70bcf8e802b4da18786c690d61873c205426c0f97f50b

Aliases

arxiv: astro-ph/0302032 · arxiv_version: astro-ph/0302032v1 · doi: 10.48550/arxiv.astro-ph/0302032 · pith_short_12: A7VCQYP6AZPQ · pith_short_16: A7VCQYP6AZPQAZHH · pith_short_8: A7VCQYP6

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/A7VCQYP6AZPQAZHHBPHY5ABLJW \
  | 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: 07ea2861fe065f0064e70bcf8e802b4da18786c690d61873c205426c0f97f50b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdf9c4839342e7e6c4a54f2d1a86372107a497092762432ad5c3983c12bfb11f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-02-03T20:12:08Z",
    "title_canon_sha256": "4e1b610279e2d616634a51f70717b756a071f1790f07cdd27b18aafc81b6c9d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0302032",
    "kind": "arxiv",
    "version": 1
  }
}