Pith Number

pith:VVADFXHZ

pith:2010:VVADFXHZZ2SQ2HQFS6LHV2YYOS

not attested not anchored not stored refs pending

Helium in first and second-generation stars in Globular Clusters from spectroscopy of red giants

(2) INAF Oss. Astr. Padova, (3) INAF Oss. Astr. Teramo, 4, (4) Excellence Cluster Universe Garching, 5) ((1) INAF Oss. Astr. Bologna, (5) Max-Planck-Institut fur Astrophysik, Angela Bragaglia (1), Eugenio Carretta (1), Garching), Raffaele Gratton (2), Santi Cassisi (3), Sara Lucatello (2, Valentina D'Orazi (2)

arxiv:1005.2659 v1 · 2010-05-15 · 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{VVADFXHZZ2SQ2HQFS6LHV2YYOS}

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	2026-05-18T02:07:24.534822Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad4032dcf9cea50d1e0597967aeb1874a752a16e5dcb569971bea557e56c859f

Aliases

arxiv: 1005.2659 · arxiv_version: 1005.2659v1 · doi: 10.48550/arxiv.1005.2659 · pith_short_12: VVADFXHZZ2SQ · pith_short_16: VVADFXHZZ2SQ2HQF · pith_short_8: VVADFXHZ

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/VVADFXHZZ2SQ2HQFS6LHV2YYOS \
  | 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: ad4032dcf9cea50d1e0597967aeb1874a752a16e5dcb569971bea557e56c859f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b05c274bb4a89590f1c3060f2d92eadc722c74b4da825d6d4f4b1c66a22c4471",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-05-15T09:23:16Z",
    "title_canon_sha256": "ae73b821998fe6fe950fba08ec6326cc5e384003d28e6a7007ff65d0297f0b60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.2659",
    "kind": "arxiv",
    "version": 1
  }
}