Pith Number

pith:UJPJI2OU

pith:2011:UJPJI2OUEPFESTXIHANQL4ZN6U

not attested not anchored not stored refs pending

The Factory and The Beehive I. Rotation Periods For Low-Mass Stars in Praesepe

(2) Cornell, (3) Toronto, (4) IfA, (5) Berkeley, (6) Caltech, 7), (7) LBNL), Adam Kraus (4), Dovi Poznanski (5, Eran Ofek (6), Jenna Lemonias (1), Joshua Bloom (5), Kevin Covey (2), Mansi Kasliwal (6), Marcel Ag\"ueros (1), Natasha Batalha (2), Nicholas Law (3), Peter Nugent (7), Robert Quimby (6) ((1) Columbia, S. Bradley Cenko (5), Shrinivas Kulkarni (6)

arxiv:1107.4039 v2 · 2011-07-20 · 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{UJPJI2OUEPFESTXIHANQL4ZN6U}

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	2026-05-18T02:01:14.110687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a25e9469d423ca494ee8381b05f32df5224f5d0e0753bce517401e8144965490

Aliases

arxiv: 1107.4039 · arxiv_version: 1107.4039v2 · doi: 10.48550/arxiv.1107.4039 · pith_short_12: UJPJI2OUEPFE · pith_short_16: UJPJI2OUEPFESTXI · pith_short_8: UJPJI2OU

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/UJPJI2OUEPFESTXIHANQL4ZN6U \
  | 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: a25e9469d423ca494ee8381b05f32df5224f5d0e0753bce517401e8144965490

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea3192b26c8844d4a7a31daada4948d9df5a4caa5a6ec6ade7dd51b3d642d7aa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-07-20T17:16:36Z",
    "title_canon_sha256": "abd59286df2aa9557280e2fa45c0f50303067fbd1a2e2868d40c210cdfa4516c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.4039",
    "kind": "arxiv",
    "version": 2
  }
}