Pith Number

pith:5JC3HZ2E

pith:2000:5JC3HZ2EPTKEIYWUSFKMU5LZBQ

not attested not anchored not stored refs pending

On the oxygen abundance determination in HII regions: the problem of the line intensities -- oxygen abundance calibration

L.S. Pilyugin (Main Astron. Obs. of Nat. Academy of Sc. of Ukraine)

arxiv:astro-ph/0004032 v1 · 2000-04-04 · 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{5JC3HZ2EPTKEIYWUSFKMU5LZBQ}

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	2026-05-18T04:35:03.820566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea45b3e7447cd44462d49154ca75790c3702f3c759bd22c379132ef8b8ed14e1

Aliases

arxiv: astro-ph/0004032 · arxiv_version: astro-ph/0004032v1 · doi: 10.48550/arxiv.astro-ph/0004032 · pith_short_12: 5JC3HZ2EPTKE · pith_short_16: 5JC3HZ2EPTKEIYWU · pith_short_8: 5JC3HZ2E

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/5JC3HZ2EPTKEIYWUSFKMU5LZBQ \
  | 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: ea45b3e7447cd44462d49154ca75790c3702f3c759bd22c379132ef8b8ed14e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c7e698fa09f80d771960fd8f2f076640f6d325711cee710683afd396ea41b28",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-04-04T06:33:23Z",
    "title_canon_sha256": "d5aab483a6741d4fa91266a9c3d76afbcbb0e165b00d638210ab83be888e7805"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0004032",
    "kind": "arxiv",
    "version": 1
  }
}