Pith Number

pith:HSFBLTHD

pith:2012:HSFBLTHD2QD3HK5ECLLQC4IQKB

not attested not anchored not stored refs pending

The Galactic WC stars: Stellar parameters from spectral analyses indicate a new evolutionary sequence

Andreas Sander, Helge Todt, Wolf-Rainer Hamann

arxiv:1201.6354 v3 · 2012-01-30 · 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{HSFBLTHD2QD3HK5ECLLQC4IQKB}

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	2026-05-18T04:01:03.561459Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c8a15cce3d407b3aba412d70171105067b3176ba22a09bc9b031637380902a1

Aliases

arxiv: 1201.6354 · arxiv_version: 1201.6354v3 · doi: 10.48550/arxiv.1201.6354 · pith_short_12: HSFBLTHD2QD3 · pith_short_16: HSFBLTHD2QD3HK5E · pith_short_8: HSFBLTHD

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/HSFBLTHD2QD3HK5ECLLQC4IQKB \
  | 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: 3c8a15cce3d407b3aba412d70171105067b3176ba22a09bc9b031637380902a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6de1060f4e6c067ef72e0a1213b12ca9e93a1ac2c085c6c5d5f9b75e805c1dd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-01-30T20:59:31Z",
    "title_canon_sha256": "86198e86b32832a6c986ae7f68b69d1e2415decba5934cd695fa2af90301989f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.6354",
    "kind": "arxiv",
    "version": 3
  }
}