Pith Number

pith:W3WWD5VZ

pith:2014:W3WWD5VZJCB7GE2LZMMZWS3INV

not attested not anchored not stored refs pending

The evolution of massive stars and their spectra I. A non-rotating 60 Msun star from the zero-age main sequence to the pre-supernova stage

Cyril Georgy (Keele), Georges Meynet (Geneva), Jose Groh (Geneva), Sylvia Ekstrom (Geneva)

arxiv:1401.7322 v1 · 2014-01-28 · astro-ph.SR · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W3WWD5VZJCB7GE2LZMMZWS3INV}

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	2026-05-18T02:52:25.923883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6ed61f6b94883f3134bcb199b4b686d68ef5639ca45b86f8667b893ab911c1f

Aliases

arxiv: 1401.7322 · arxiv_version: 1401.7322v1 · doi: 10.48550/arxiv.1401.7322 · pith_short_12: W3WWD5VZJCB7 · pith_short_16: W3WWD5VZJCB7GE2L · pith_short_8: W3WWD5VZ

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/W3WWD5VZJCB7GE2LZMMZWS3INV \
  | 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: b6ed61f6b94883f3134bcb199b4b686d68ef5639ca45b86f8667b893ab911c1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c86e44084262cdda147b63a9ae0c7f1d505dc08c793a60bed7cce345f72edf0d",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-01-28T20:49:24Z",
    "title_canon_sha256": "8b59cc576a62ced573823c7ee3be676d33c57ed5687f33d5ea84f85ce4c3ac46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.7322",
    "kind": "arxiv",
    "version": 1
  }
}