Pith Number

pith:3RBR2XBS

pith:2018:3RBR2XBSTEBGVKQXBSSHAY5RNC

not attested not anchored not stored refs pending

Improved Main Sequence Turnoff Ages of Young Open Clusters: Multicolor UBV Techniques & the Challenges of Rotation

Jason S. Kalirai, Jeffrey D. Cummings

arxiv:1807.10772 v1 · 2018-07-27 · 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{3RBR2XBSTEBGVKQXBSSHAY5RNC}

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	2026-05-18T00:01:58.381699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc431d5c3299026aaa170ca47063b1689ab6fa4bc38c5bc20a9c4f5edd815420

Aliases

arxiv: 1807.10772 · arxiv_version: 1807.10772v1 · doi: 10.48550/arxiv.1807.10772 · pith_short_12: 3RBR2XBSTEBG · pith_short_16: 3RBR2XBSTEBGVKQX · pith_short_8: 3RBR2XBS

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/3RBR2XBSTEBGVKQXBSSHAY5RNC \
  | 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: dc431d5c3299026aaa170ca47063b1689ab6fa4bc38c5bc20a9c4f5edd815420

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "577b348ef542f4584a09e0600db5e460a13f6aa0466cba568a4313b04d07da8a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-27T18:00:03Z",
    "title_canon_sha256": "3c83c0dae6e3a0c3a1ffba050f812511526cbad1246ccd34f38d55f3a002b835"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10772",
    "kind": "arxiv",
    "version": 1
  }
}