Pith Number

pith:L7GMP7OE

pith:2013:L7GMP7OEQ3D76KREO4PPJWO7AG

not attested not anchored not stored refs pending

Photometric studies of open star clusters Haffner 11 and Czernik 31

A. K. Durgapal, D. Bisht, R. K. S. Yadav

arxiv:1304.7893 v1 · 2013-04-30 · 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{L7GMP7OEQ3D76KREO4PPJWO7AG}

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	2026-05-18T01:50:14.268328Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fccc7fdc486c7ff2a24771ef4d9df01a45613688ec737570df4342e6df67cb2

Aliases

arxiv: 1304.7893 · arxiv_version: 1304.7893v1 · doi: 10.48550/arxiv.1304.7893 · pith_short_12: L7GMP7OEQ3D7 · pith_short_16: L7GMP7OEQ3D76KRE · pith_short_8: L7GMP7OE

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/L7GMP7OEQ3D76KREO4PPJWO7AG \
  | 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: 5fccc7fdc486c7ff2a24771ef4d9df01a45613688ec737570df4342e6df67cb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b05470d056cef1e933eddeab91f8010ca7fbdae97ed5b49d9d46bfa50ca8bb6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-04-30T06:45:46Z",
    "title_canon_sha256": "c47acdd9a56a13484d1d2f92d04958e0949a9629b287b7357bed1d73889779ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.7893",
    "kind": "arxiv",
    "version": 1
  }
}