Pith Number

pith:CYFVZ477

pith:2026:CYFVZ477BT7U2YFDZQQ2N7KLQN

not attested not anchored not stored refs pending

The open cluster NGC 2509. Stellar rotation and main sequence turnoff extension from FLAMES spectroscopy

A. Bragaglia, A. Frasca, A. Vallenari, C. Boeche, D. Bossini, G. Costa, I.N. Kallimanis, J. ALonso-Santiago, R. Carrera, S. Lucatello, V. DOrazi

arxiv:2606.04839 v1 · 2026-06-03 · 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{CYFVZ477BT7U2YFDZQQ2N7KLQN}

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	2026-06-04T01:09:31.806278Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

160b5cf3ff0cff4d60a3cc21a6fd4b8352e0371afd57a23c3664b8d3e31202dc

Aliases

arxiv: 2606.04839 · arxiv_version: 2606.04839v1 · doi: 10.48550/arxiv.2606.04839 · pith_short_12: CYFVZ477BT7U · pith_short_16: CYFVZ477BT7U2YFD · pith_short_8: CYFVZ477

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/CYFVZ477BT7U2YFDZQQ2N7KLQN \
  | 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: 160b5cf3ff0cff4d60a3cc21a6fd4b8352e0371afd57a23c3664b8d3e31202dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98a0ae177d8e90791ee14b561917c13383433f4f2e375390d50663a983df99c9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-06-03T13:09:44Z",
    "title_canon_sha256": "7cb52a6fec68c8f5f989bee8fed483daf8a8bd48bddeeb99b35e66dafe6e11f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.04839",
    "kind": "arxiv",
    "version": 1
  }
}