Pith Number

pith:W2AP24ER

pith:2025:W2AP24ER6SUVGUY2AUYIL3AWVY

not attested not anchored not stored refs pending

Precise Age For The Binary HD 21278 In The Young Alpha Persei Cluster

Becky Flores, Benjamin R. Setterholm, Christopher A. Danner, Christopher D. Farrington, Cyprien Lanthermann, Eric L. Sandquist, Gail H. Schaefer, Isabelle Codron, Jeremy Jones, Jerome A. Orosz, John D. Monnier, Luigi R. Bedin, Mayra Gutierrez, Narsireddy Anugu, Robert Klement, Stefan Kraus, Tyler Gardner

arxiv:2506.08241 v1 · 2025-06-09 · 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{W2AP24ER6SUVGUY2AUYIL3AWVY}

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	2026-07-05T11:18:46.799581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b680fd7091f4a953531a053085ec16ae1bbfe9a9b09b1ffef0c54795ed0461f4

Aliases

arxiv: 2506.08241 · arxiv_version: 2506.08241v1 · doi: 10.48550/arxiv.2506.08241 · pith_short_12: W2AP24ER6SUV · pith_short_16: W2AP24ER6SUVGUY2 · pith_short_8: W2AP24ER

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/W2AP24ER6SUVGUY2AUYIL3AWVY \
  | 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: b680fd7091f4a953531a053085ec16ae1bbfe9a9b09b1ffef0c54795ed0461f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "529191f01b9e25ea06fb3b482e392efa729f11347d29263b14b8e0858af06ebc",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-06-09T21:19:04Z",
    "title_canon_sha256": "1f301c13cb1dfd41292b4d9bffe0bf06f0a4cd96628d3384380c89b796ba55fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.08241",
    "kind": "arxiv",
    "version": 1
  }
}