Pith Number

pith:3JHPJYQC

pith:2013:3JHPJYQCM7Z5L32RV24QCIMDZ4

not attested not anchored not stored refs pending

Helium enhanced stars and multiple populations along the horizontal branch of NGC2808: direct spectroscopic measurements

A. A. R. Valcarce, A. F. Marino, A. P. Milone, C. Cortes, F. D'Antona, G. Piotto, H. Jerjen, K. Lind, K. Schlesinger, L. Casagrande, L. R. Bedin, M. Asplund, M. Bergemann, M. Catelan, M. Zoccali, N. Przybilla, R. Angeloni, S. Cassisi

arxiv:1310.4527 v1 · 2013-10-16 · 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{3JHPJYQCM7Z5L32RV24QCIMDZ4}

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	2026-05-18T01:46:58.614895Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da4ef4e20267f3d5ef51aeb9012183cf0e5c2388d0f2f4ce2c404ec7164b6f5b

Aliases

arxiv: 1310.4527 · arxiv_version: 1310.4527v1 · doi: 10.48550/arxiv.1310.4527 · pith_short_12: 3JHPJYQCM7Z5 · pith_short_16: 3JHPJYQCM7Z5L32R · pith_short_8: 3JHPJYQC

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/3JHPJYQCM7Z5L32RV24QCIMDZ4 \
  | 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: da4ef4e20267f3d5ef51aeb9012183cf0e5c2388d0f2f4ce2c404ec7164b6f5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7633b2f929a874a7de7cda30fbc903e682e430d6c5f799bd15a6805a9e1d3e91",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-10-16T21:43:08Z",
    "title_canon_sha256": "8810cc3110c1b97c8dc2ec5826c8c25826415ec7c8cac54ca7c509356a46a413"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.4527",
    "kind": "arxiv",
    "version": 1
  }
}