Pith Number

pith:5RYN76SA

pith:2009:5RYN76SAC7BUSEO5WD4WQV5R2D

not attested not anchored not stored refs pending

An HST/WFPC2 survey of bright young clusters in M31. IV. Ages and mass estimates

F. Fusi Pecci (INAF-Oabo), J.G. Cohen (Caltech), J.P. Brodie (UCO/Lick), J.P. Huchra (CfA), J. Strader (CfA), L. Federici (INAF-Oabo), M.A. Beasley (UCO/Lick), M. Bellazzini (INAF-Oabo), M. Kissler-Patig (ESO), P. Barmby (Univ. W. Ontario), P.W. Hodge (Univ. of Washington), S. Galleti (INAF-Oabo), S. Perina (UniBO/OABO), T.H. Puzia (Herzberg Inst.)

arxiv:0911.3166 v1 · 2009-11-16 · 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{5RYN76SAC7BUSEO5WD4WQV5R2D}

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	2026-05-18T02:10:47.020209Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec70dffa4017c34911ddb0f96857b1d0c7e347af7501945e3305b92c904a52dc

Aliases

arxiv: 0911.3166 · arxiv_version: 0911.3166v1 · doi: 10.48550/arxiv.0911.3166 · pith_short_12: 5RYN76SAC7BU · pith_short_16: 5RYN76SAC7BUSEO5 · pith_short_8: 5RYN76SA

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/5RYN76SAC7BUSEO5WD4WQV5R2D \
  | 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: ec70dffa4017c34911ddb0f96857b1d0c7e347af7501945e3305b92c904a52dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c9375098120267d6fc2915ab0427daae0e4ed9a8efe5e120a775770e78bc687",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-11-16T21:19:27Z",
    "title_canon_sha256": "cef8bb0bd1bbb6e412ee258f00e6e5bad8ca45a7298adb2f06c69cd4a91abba7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.3166",
    "kind": "arxiv",
    "version": 1
  }
}