Pith Number

pith:2ZRTATAQ

pith:2012:2ZRTATAQV5GOCPQNQGXAUL3BKD

not attested not anchored not stored refs pending

Nitrogen line spectroscopy in O-stars -- III. The earliest O-stars

F. Najarro, J.G. Rivero Gonzalez, J. Puls, P. Massey

arxiv:1205.4444 v1 · 2012-05-20 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2ZRTATAQV5GOCPQNQGXAUL3BKD}

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	2026-05-18T01:57:25.264684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d663304c10af4ce13e0d81ae0a2f6150e1bda1445ab3331e0e72124ce7936cf5

Aliases

arxiv: 1205.4444 · arxiv_version: 1205.4444v1 · doi: 10.48550/arxiv.1205.4444 · pith_short_12: 2ZRTATAQV5GO · pith_short_16: 2ZRTATAQV5GOCPQN · pith_short_8: 2ZRTATAQ

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/2ZRTATAQV5GOCPQNQGXAUL3BKD \
  | 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: d663304c10af4ce13e0d81ae0a2f6150e1bda1445ab3331e0e72124ce7936cf5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ee482aa4c72c1f90ab55e79b07500e4ef3aaf3ce535c316fb3bc5976051ec83",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-05-20T18:32:14Z",
    "title_canon_sha256": "cde986043b0c1a0cc4709c4a4f742ddb2503b1069d5e85c3cd4dd0bbe955a564"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.4444",
    "kind": "arxiv",
    "version": 1
  }
}