Pith Number

pith:EPSNNJUX

pith:2007:EPSNNJUXGSSF22GDNQDWM2RGMF

not attested not anchored not stored refs pending

Populations of massive stars in galaxies, implications for the stellar evolution theory

Andre Maeder, Georges Meynet, Patrick Eggenberger

arxiv:astro-ph/0702515 v1 · 2007-02-20 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EPSNNJUXGSSF22GDNQDWM2RGMF}

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	2026-07-04T17:07:41.173204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23e4d6a69734a45d68c36c07666a26617738c0fa5ab28dab5848a4721b9f7c55

Aliases

arxiv: astro-ph/0702515 · arxiv_version: astro-ph/0702515v1 · doi: 10.48550/arxiv.astro-ph/0702515 · pith_short_12: EPSNNJUXGSSF · pith_short_16: EPSNNJUXGSSF22GD · pith_short_8: EPSNNJUX

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/EPSNNJUXGSSF22GDNQDWM2RGMF \
  | 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: 23e4d6a69734a45d68c36c07666a26617738c0fa5ab28dab5848a4721b9f7c55

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a91639f57f89f24ff242e285cdf8de5de69e725b52b9d294494f3f3703d2cc00",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-02-20T08:37:42Z",
    "title_canon_sha256": "c27dcc4faa0890c55729071e360364b1b64c2a1ce92cc60e39d0d3ad39c9a8b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0702515",
    "kind": "arxiv",
    "version": 1
  }
}