Pith Number

pith:7BG5LZYS

pith:2023:7BG5LZYSPXZI26WPABNGUV24DP

not attested not anchored not stored refs pending

Quantitative spectroscopy of late O-type main-sequence stars with a hybrid non-LTE method

Keith Butler, Norbert Przybilla, Patrick Aschenbrenner

arxiv:2301.09462 v1 · 2023-01-23 · 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{7BG5LZYSPXZI26WPABNGUV24DP}

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	2026-07-05T05:48:48.938904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f84dd5e7127df28d7acf005a6a575c1bf33d995beb48a3d52f12aa0023f27460

Aliases

arxiv: 2301.09462 · arxiv_version: 2301.09462v1 · doi: 10.48550/arxiv.2301.09462 · pith_short_12: 7BG5LZYSPXZI · pith_short_16: 7BG5LZYSPXZI26WP · pith_short_8: 7BG5LZYS

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/7BG5LZYSPXZI26WPABNGUV24DP \
  | 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: f84dd5e7127df28d7acf005a6a575c1bf33d995beb48a3d52f12aa0023f27460

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e5b2c94906bf3fdb387f5d003348ba5935ab71ce70728bdec81958625d5f9f9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2023-01-23T14:47:28Z",
    "title_canon_sha256": "4c1f76b45ec182b3652fff6820cd95b139c1846e854fec26e052205335be6b9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2301.09462",
    "kind": "arxiv",
    "version": 1
  }
}