Pith Number

pith:BVPZYKKB

pith:2009:BVPZYKKBGAF6DG4MZTWV3RJXUD

not attested not anchored not stored refs pending

An HST/WFPC Survey of Bright Young Clusters in M31. II. Photometry of Less Luminous Clusters in the Fields

J. G. Cohen, J. Strader, M. Bellazzini, O. K. Krienke, P.Barmby, P. W. Hodge, S. Perina, T. H. Puzia

arxiv:0907.1305 v1 · 2009-07-07 · astro-ph.GA · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BVPZYKKBGAF6DG4MZTWV3RJXUD}

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	2026-05-18T02:13:04.618793Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d5f9c2941300be19b8ccced5dc537a0de98d77fa66c329edb3ce04972cc3793

Aliases

arxiv: 0907.1305 · arxiv_version: 0907.1305v1 · doi: 10.48550/arxiv.0907.1305 · pith_short_12: BVPZYKKBGAF6 · pith_short_16: BVPZYKKBGAF6DG4M · pith_short_8: BVPZYKKB

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/BVPZYKKBGAF6DG4MZTWV3RJXUD \
  | 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: 0d5f9c2941300be19b8ccced5dc537a0de98d77fa66c329edb3ce04972cc3793

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bb56c596df8bb73c7c34397b2906f09db3b1f1f121b13b12702a2562744a08f",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-07-07T21:23:54Z",
    "title_canon_sha256": "a1ca7ca138cd0ade6bb1ba7ab35c1027fb195726ff799a7f647b7247ca711d9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1305",
    "kind": "arxiv",
    "version": 1
  }
}