Pith Number

pith:FA356HHY

pith:2018:FA356HHYJ3VQU7OK4PAHSVIBHZ

not attested not anchored not stored refs pending

The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XVI. The helium abundance of multiple populations

A. Bellini, A. F. Marino, A. P. Milone, A. Renzini, A. Sarajedini, B. Barbuy, D. Nardiello, E. P. Lagioia, E. Vesperini, F. D'Antona, G. Cordoni, G. Piotto, J. Anderson, L. R. Bedin, M. Tailo, R. P. van der Marel, S. Cassisi, S. Ortolani, T. M. Brown

arxiv:1809.05006 v1 · 2018-09-13 · astro-ph.SR · 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{FA356HHYJ3VQU7OK4PAHSVIBHZ}

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.

Cited by

1 paper in Pith

New Way to Date Globular Clusters: Brown Dwarf Cooling Sequences

Receipt and verification

First computed	2026-05-18T00:04:54.596380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2837df1cf84eeb0a7dcae3c07955013e6b7b8d10d1d2cd8fc124d2e09cb1fe83

Aliases

arxiv: 1809.05006 · arxiv_version: 1809.05006v1 · doi: 10.48550/arxiv.1809.05006 · pith_short_12: FA356HHYJ3VQ · pith_short_16: FA356HHYJ3VQU7OK · pith_short_8: FA356HHY

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/FA356HHYJ3VQU7OK4PAHSVIBHZ \
  | 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: 2837df1cf84eeb0a7dcae3c07955013e6b7b8d10d1d2cd8fc124d2e09cb1fe83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e5f36d363c67464329a2585d05ab80e47d2b1edf87bc592b74fd31953b59ab9",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-09-13T15:04:19Z",
    "title_canon_sha256": "da3861cf79a67e6a3cd6ae003d82fe352f5d0d11c2adffab375d244ea920da17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05006",
    "kind": "arxiv",
    "version": 1
  }
}