Pith Number

pith:Z2KB33QP

pith:2009:Z2KB33QP7TWQOYDKPYTAIY2NC6

not attested not anchored not stored refs pending

Hot Horizontal Branch stars in omega Centauri: clues about their origin from the cluster Color Magnitude Diagram

A. Bellini (Space Telescope Inst.), A. Milone (Padua Univ.), A. Pietrinferni (INAF-OACTe), G. Piotto (Padua Univ.), J. Anderson (Space Telescope Science Inst.), Liverpool John Moores Univ.), M. Salaris (ARI, R.L. Bedin (Space Telescope Inst.), S. Cassisi (INAF-OACTe)

arxiv:0907.3550 v1 · 2009-07-21 · 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{Z2KB33QP7TWQOYDKPYTAIY2NC6}

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	2026-05-18T02:12:55.223793Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce941dee0ffced07606a7e2604634d17b88dc1d6f6a13a1e31851e10909a91d8

Aliases

arxiv: 0907.3550 · arxiv_version: 0907.3550v1 · doi: 10.48550/arxiv.0907.3550 · pith_short_12: Z2KB33QP7TWQ · pith_short_16: Z2KB33QP7TWQOYDK · pith_short_8: Z2KB33QP

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/Z2KB33QP7TWQOYDKPYTAIY2NC6 \
  | 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: ce941dee0ffced07606a7e2604634d17b88dc1d6f6a13a1e31851e10909a91d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37e339c6212256f38a0604722b4bff71ba9f7c88d07d10b02b399c2983f985de",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-21T06:25:47Z",
    "title_canon_sha256": "d0bddf22b894de3d40c71c35fa3da1cdf6f24b2c01f2082213be1e2e652d464e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3550",
    "kind": "arxiv",
    "version": 1
  }
}