Pith Number

pith:WIOYSMXL

pith:2009:WIOYSMXLLJOJJ4AFYS2EDEVUMN

not attested not anchored not stored refs pending

Structural Parameters of the M87 Globular Clusters

Canada), Chile), John P. Blakeslee (Herzberg Institute of Astrophysics, Juan P. Madrid, Matias Gomez (Universidad Andres Bello, William E. Harris (McMaster University

arxiv:0909.0272 v1 · 2009-09-01 · astro-ph.CO · 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{WIOYSMXLLJOJJ4AFYS2EDEVUMN}

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	2026-05-18T02:34:36.863496Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b21d8932eb5a5c94f005c4b44192b4637d7652b31788e231f23dfca84d352f51

Aliases

arxiv: 0909.0272 · arxiv_version: 0909.0272v1 · doi: 10.48550/arxiv.0909.0272 · pith_short_12: WIOYSMXLLJOJ · pith_short_16: WIOYSMXLLJOJJ4AF · pith_short_8: WIOYSMXL

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/WIOYSMXLLJOJJ4AFYS2EDEVUMN \
  | 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: b21d8932eb5a5c94f005c4b44192b4637d7652b31788e231f23dfca84d352f51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98702334665e5346bc2e94c372b8675e7c2532603a57e4551b81fa41259f59c3",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-01T20:13:04Z",
    "title_canon_sha256": "7f891d080517b20c1d4c4369f1e43e025eb0d99d5c87ddd5228579319ff201f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0272",
    "kind": "arxiv",
    "version": 1
  }
}