Pith Number

pith:7PO5LABB

pith:2017:7PO5LABBMH6ANWPMGH5WGH473Q

not attested not anchored not stored refs pending

Quantitative spectroscopy of extreme helium stars - Model atmospheres and a non-LTE abundance analysis of BD+10$^\circ$2179?

((1) California Institute of Technology, (2) Universit\"at Innsbruck, (3) University of Erlangen-Nuremberg, (4) Armagh Observatory, (5) University Observatory Munich), C. Simon Jeffery (4), Keith Butler (5), Norbert Przybilla (2), N. T. Behara (4), Planetarium, Thomas Kupfer (1), Ulrich Heber (3)

arxiv:1706.05389 v1 · 2017-06-16 · 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{7PO5LABBMH6ANWPMGH5WGH473Q}

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	2026-05-18T00:38:02.169085Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbddd5802161fc06d9ec31fb631f9fdc1c7f61ca5d1034f80cbc5fa92dfc189d

Aliases

arxiv: 1706.05389 · arxiv_version: 1706.05389v1 · doi: 10.48550/arxiv.1706.05389 · pith_short_12: 7PO5LABBMH6A · pith_short_16: 7PO5LABBMH6ANWPM · pith_short_8: 7PO5LABB

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/7PO5LABBMH6ANWPMGH5WGH473Q \
  | 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: fbddd5802161fc06d9ec31fb631f9fdc1c7f61ca5d1034f80cbc5fa92dfc189d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4dd6858398297c646b529889ad1f0663ab4bb175cabc502e391366783749b4c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-06-16T18:00:55Z",
    "title_canon_sha256": "daade2c8b168340699023d918bd1f2d1d674a0a13002ece55592a79337c67487"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.05389",
    "kind": "arxiv",
    "version": 1
  }
}