Pith Number

pith:R7BPJJQK

pith:2009:R7BPJJQKX7P45N6VVHWQUG4FER

not attested not anchored not stored refs pending

Sounding stellar cycles with Kepler - I. Strategy for selecting targets

C. Karoff, D. Buzasi, H. Kjeldsen, T. Arentoft, T. S. Metcalfe, W. J. Chaplin, Y. Elsworth

arxiv:0906.5441 v1 · 2009-06-30 · 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{R7BPJJQKX7P45N6VVHWQUG4FER}

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	2026-05-18T02:13:11.850555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fc2f4a60abfdfceb7d5a9ed0a1b85245fb8dd192b21aeffc261a434fd79585a

Aliases

arxiv: 0906.5441 · arxiv_version: 0906.5441v1 · doi: 10.48550/arxiv.0906.5441 · pith_short_12: R7BPJJQKX7P4 · pith_short_16: R7BPJJQKX7P45N6V · pith_short_8: R7BPJJQK

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/R7BPJJQKX7P45N6VVHWQUG4FER \
  | 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: 8fc2f4a60abfdfceb7d5a9ed0a1b85245fb8dd192b21aeffc261a434fd79585a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60a8b42baf46d1e178eb758593b1650e95126817e547df257b2cc1ec53f8c2ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-06-30T08:52:51Z",
    "title_canon_sha256": "28b53a165647deaa250c604656e313b6f0c9991fbfe2d8328161cc0b30f514b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.5441",
    "kind": "arxiv",
    "version": 1
  }
}