Pith Number

pith:Q5PVI22S

pith:2012:Q5PVI22SRHIMVQ5YJCDH2BFCMV

not attested not anchored not stored refs pending

An updated catalog of M33 clusters and candidates: $UBVRI$ photometry, and some statistical results

2) ((1) National Astronomical Observatories, (2) Key Laboratory of Optical Astronomy, Beijing, China), Chinese Academy of Sciences, Jun Ma (1, National Astronomical Observatories

arxiv:1205.4822 v1 · 2012-05-22 · 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{Q5PVI22SRHIMVQ5YJCDH2BFCMV}

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	2026-05-18T01:57:24.651466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

875f546b5289d0cac3b848867d04a2654881dc7a1cce62251886d5379ea419dc

Aliases

arxiv: 1205.4822 · arxiv_version: 1205.4822v1 · doi: 10.48550/arxiv.1205.4822 · pith_short_12: Q5PVI22SRHIM · pith_short_16: Q5PVI22SRHIMVQ5Y · pith_short_8: Q5PVI22S

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/Q5PVI22SRHIMVQ5YJCDH2BFCMV \
  | 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: 875f546b5289d0cac3b848867d04a2654881dc7a1cce62251886d5379ea419dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3368b6e1d51044eddb969c82c5711b809370469c60cd53e0b92be4c75cd4fac4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-05-22T07:17:18Z",
    "title_canon_sha256": "890324f5c2f202a8006f3db87b3c6076fe45a002abb9095939c4381ad367c03e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.4822",
    "kind": "arxiv",
    "version": 1
  }
}