Pith Number

pith:6XNGVNDA

pith:2012:6XNGVNDAFSORFIWWCICK22IO57

not attested not anchored not stored refs pending

A classification of HII regions based on Oxygen and Helium lines: The cases of TOL2146-391 and TOL0357-3915

Antonio Peimbert, Manuel Peimbert, Maria A. Pe\~na-Guerrero

arxiv:1204.4507 v1 · 2012-04-20 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6XNGVNDAFSORFIWWCICK22IO57}

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	2026-05-18T01:57:48.358608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5da6ab4602c9d12a2d61204ad690eefc30019947cbe5a54bacdd3897e676a43

Aliases

arxiv: 1204.4507 · arxiv_version: 1204.4507v1 · doi: 10.48550/arxiv.1204.4507 · pith_short_12: 6XNGVNDAFSOR · pith_short_16: 6XNGVNDAFSORFIWW · pith_short_8: 6XNGVNDA

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/6XNGVNDAFSORFIWWCICK22IO57 \
  | 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: f5da6ab4602c9d12a2d61204ad690eefc30019947cbe5a54bacdd3897e676a43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e90d32a06a6af3a8ae8029a73c24474af905f1f549b470f7b2a7a25919c2a605",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-04-20T00:04:58Z",
    "title_canon_sha256": "d2084aa3455ccf3366d9d6a20417c0977815cb015d53c85baac41ba1b148e552"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4507",
    "kind": "arxiv",
    "version": 1
  }
}