Pith Number

pith:QQI45AQ7

pith:2010:QQI45AQ7EXRZBBKZTCV55YYB25

not attested not anchored not stored refs pending

Old Star Clusters in the FSR catalogue

(2) University of Heidelberg, (3) University of Hertfordshire), D. Froebrich (1), D. Samuel (3), P.W. Lucas (3) ((1) University of Kent, S. Schmeja (2)

arxiv:1007.3410 v1 · 2010-07-20 · 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{QQI45AQ7EXRZBBKZTCV55YYB25}

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	2026-05-18T02:06:12.411835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8411ce821f25e390855998abdee301d74ff1cc2b0f441b1b8a5916a27bac9049

Aliases

arxiv: 1007.3410 · arxiv_version: 1007.3410v1 · doi: 10.48550/arxiv.1007.3410 · pith_short_12: QQI45AQ7EXRZ · pith_short_16: QQI45AQ7EXRZBBKZ · pith_short_8: QQI45AQ7

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/QQI45AQ7EXRZBBKZTCV55YYB25 \
  | 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: 8411ce821f25e390855998abdee301d74ff1cc2b0f441b1b8a5916a27bac9049

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d97157eff90b5745b97e3e54d619eb3c523304b020323fbe1a5710f7731e119",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-07-20T12:42:53Z",
    "title_canon_sha256": "72d996cb3ff6cfd47eff76eef45d7abd5eeaa27083884a4924e1a9186419552a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.3410",
    "kind": "arxiv",
    "version": 1
  }
}