Pith Number

pith:6ZLIFSLO

pith:2015:6ZLIFSLOI74D4Y2AHZY2CDHSXI

not attested not anchored not stored refs pending

Two Populations of Old Star Clusters in the Spiral Galaxy M101 Based on HST/ACS Observations

Bradley C. Whitmore, Lesley A. Simanton, Rupali Chandar

arxiv:1504.07267 v1 · 2015-04-27 · 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{6ZLIFSLOI74D4Y2AHZY2CDHSXI}

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	2026-05-18T01:59:34.704953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f65682c96e47f83e63403e71a10cf2ba398192ce750f47a3bfffbce32b928fd1

Aliases

arxiv: 1504.07267 · arxiv_version: 1504.07267v1 · doi: 10.48550/arxiv.1504.07267 · pith_short_12: 6ZLIFSLOI74D · pith_short_16: 6ZLIFSLOI74D4Y2A · pith_short_8: 6ZLIFSLO

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/6ZLIFSLOI74D4Y2AHZY2CDHSXI \
  | 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: f65682c96e47f83e63403e71a10cf2ba398192ce750f47a3bfffbce32b928fd1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "276771a88566f8bdf457400a2a8cdec758ff2e2e2022b74dc3667c7c7ac952b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-27T20:25:10Z",
    "title_canon_sha256": "68df6b5ad78e060b14f27356373c270aa11a3d014be4d53b692a9944f15bd153"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07267",
    "kind": "arxiv",
    "version": 1
  }
}