Pith Number

pith:IPE2C7ZN

pith:2011:IPE2C7ZNUOWAJ6B2L6RW2AIPZS

not attested not anchored not stored refs pending

First PPMXL photometric analysis of open cluster "Ruprecht 15"

A. L. Tadross

arxiv:1109.3027 v1 · 2011-09-14 · 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{IPE2C7ZNUOWAJ6B2L6RW2AIPZS}

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	2026-05-18T02:00:33.103578Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43c9a17f2da3ac04f83a5fa36d010fccac31a9ca93acac90c6ff4748d6f27d82

Aliases

arxiv: 1109.3027 · arxiv_version: 1109.3027v1 · doi: 10.48550/arxiv.1109.3027 · pith_short_12: IPE2C7ZNUOWA · pith_short_16: IPE2C7ZNUOWAJ6B2 · pith_short_8: IPE2C7ZN

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/IPE2C7ZNUOWAJ6B2L6RW2AIPZS \
  | 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: 43c9a17f2da3ac04f83a5fa36d010fccac31a9ca93acac90c6ff4748d6f27d82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc9152331bfba1077de2d0a4b90bc5e1d122cae2953838a18cbbbac7fa695f4c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-09-14T09:02:04Z",
    "title_canon_sha256": "f2c7040f7ba3583330da1fcce258a84a990ea82a66be776a57d45a289b228b5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.3027",
    "kind": "arxiv",
    "version": 1
  }
}