Pith Number

pith:YVSHWKPF

pith:2021:YVSHWKPFLNJUGIQKYHWPBDUGM2

not attested not anchored not stored refs pending

Structure of Open Clusters -- Gaia DR2 and its limitations

Ernst Paunzen, Martin Piecka

arxiv:2107.07230 v1 · 2021-07-15 · astro-ph.GA · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YVSHWKPFLNJUGIQKYHWPBDUGM2}

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	2026-07-05T02:58:12.121215Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5647b29e55b5343220ac1ecf08e8666a026642012706c60189ef6fdcb28d80b

Aliases

arxiv: 2107.07230 · arxiv_version: 2107.07230v1 · doi: 10.48550/arxiv.2107.07230 · pith_short_12: YVSHWKPFLNJU · pith_short_16: YVSHWKPFLNJUGIQK · pith_short_8: YVSHWKPF

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/YVSHWKPFLNJUGIQKYHWPBDUGM2 \
  | 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: c5647b29e55b5343220ac1ecf08e8666a026642012706c60189ef6fdcb28d80b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66f6abe34b13856d0723317cc38310ad88040b442730057cc03b82dd7f3523ec",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-07-15T10:10:16Z",
    "title_canon_sha256": "82e158b9bf38ad5ec047596bac794258536cbc9dd26e240c6e9e26ebd3340791"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.07230",
    "kind": "arxiv",
    "version": 1
  }
}