Pith Number

pith:ZXRBHSID

pith:2013:ZXRBHSID4F5VDUUIOXOEA3HYK4

not attested not anchored not stored refs pending

Spectroscopy of blue horizontal branch stars in NGC 6656 (M22)

C. Moni Bidin, C. Salgado, D. Geisler, M. Catelan, S. Villanova

arxiv:1307.2957 v2 · 2013-07-11 · 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{ZXRBHSID4F5VDUUIOXOEA3HYK4}

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	2026-05-18T01:48:51.964724Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cde213c903e17b51d28875dc406cf8573e168caaa1cf39e807ea33124ff91801

Aliases

arxiv: 1307.2957 · arxiv_version: 1307.2957v2 · doi: 10.48550/arxiv.1307.2957 · pith_short_12: ZXRBHSID4F5V · pith_short_16: ZXRBHSID4F5VDUUI · pith_short_8: ZXRBHSID

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/ZXRBHSID4F5VDUUIOXOEA3HYK4 \
  | 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: cde213c903e17b51d28875dc406cf8573e168caaa1cf39e807ea33124ff91801

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce8d78e15045a1dc498ecf47a76954a4719709df703839d151fc1c494a0037e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-07-11T01:04:55Z",
    "title_canon_sha256": "58cf900a2828e2322fb3e8c2a36c3463cbf747d86756e7e733f4f3f9ef0f6e17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2957",
    "kind": "arxiv",
    "version": 2
  }
}