Pith Number

pith:S66UNLYW

pith:2018:S66UNLYWPRAKOQF6OSP2ZT7CP4

not attested not anchored not stored refs pending

WIYN Open Cluster Study, LXXVI. Li Evolution Among Stars of Low/Intermediate Mass: The Metal-Deficient Open Cluster, NGC 2506

(2) Indiana University), B. A. Twarog (1) ((1) University of Kansas, B. J. Anthony-Twarog (1), C. P. Deliyannis (2), D. B. Lee-Brown (1)

arxiv:1802.03447 v1 · 2018-02-09 · 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{S66UNLYWPRAKOQF6OSP2ZT7CP4}

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	2026-05-18T00:20:35.163216Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97bd46af167c40a740be749faccfe27f15195b828afac02047223b426fd605d6

Aliases

arxiv: 1802.03447 · arxiv_version: 1802.03447v1 · doi: 10.48550/arxiv.1802.03447 · pith_short_12: S66UNLYWPRAK · pith_short_16: S66UNLYWPRAKOQF6 · pith_short_8: S66UNLYW

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/S66UNLYWPRAKOQF6OSP2ZT7CP4 \
  | 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: 97bd46af167c40a740be749faccfe27f15195b828afac02047223b426fd605d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d892bfd0fb7dcebd0e2e69cf5e96c6c2904281ebff5d1db5953c6b6af0630b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-02-09T21:05:57Z",
    "title_canon_sha256": "05f62541b7075d205bf3f5f8d918a4f7ed19c1869026247f70cbb676c66ddbc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03447",
    "kind": "arxiv",
    "version": 1
  }
}