Pith Number

pith:O4YV4PA7

pith:2018:O4YV4PA7HUE5Z3NLVQILWRXPMF

not attested not anchored not stored refs pending

The chemical composition of the oldest nearby open cluster Ruprecht 147

Alessio Mucciarelli, Angela Bragaglia, Gloria Andreuzzi, Paolo Donati, Xiaoting Fu

arxiv:1809.06868 v1 · 2018-09-18 · astro-ph.SR · 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{O4YV4PA7HUE5Z3NLVQILWRXPMF}

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	2026-05-17T23:59:49.756618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77315e3c1f3d09dcedabac10bb46ef61788610595279ad7bc4b958fe64ebc0c0

Aliases

arxiv: 1809.06868 · arxiv_version: 1809.06868v1 · doi: 10.48550/arxiv.1809.06868 · pith_short_12: O4YV4PA7HUE5 · pith_short_16: O4YV4PA7HUE5Z3NL · pith_short_8: O4YV4PA7

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/O4YV4PA7HUE5Z3NLVQILWRXPMF \
  | 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: 77315e3c1f3d09dcedabac10bb46ef61788610595279ad7bc4b958fe64ebc0c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d32a31b47502ee488317dce4481e8c1ad6722c79e67e9166a072531eeff4ae2",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-09-18T18:00:04Z",
    "title_canon_sha256": "958605a4fea1c0957b5d741c00890472e85f55332783f46cf88a740f5908ceb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.06868",
    "kind": "arxiv",
    "version": 1
  }
}