Pith Number

pith:EP2HDKOW

pith:2013:EP2HDKOWXZH7WOEKIJKI5R7GDR

not attested not anchored not stored refs pending

The Anticorrelated Nature of the Primary and Secondary Eclipse Timing Variations for the Kepler Contact Binaries

A. Levine, B. Kalomeni, K. Tran, S. Rappaport, Sz. Csizmadia, T. Borkovits

arxiv:1305.4639 v2 · 2013-05-20 · 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{EP2HDKOWXZH7WOEKIJKI5R7GDR}

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	2026-05-18T02:30:40.630962Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23f471a9d6be4ffb388a42548ec7e61c71a66da05b36aaeec4fdb5600b22a73d

Aliases

arxiv: 1305.4639 · arxiv_version: 1305.4639v2 · doi: 10.48550/arxiv.1305.4639 · pith_short_12: EP2HDKOWXZH7 · pith_short_16: EP2HDKOWXZH7WOEK · pith_short_8: EP2HDKOW

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/EP2HDKOWXZH7WOEKIJKI5R7GDR \
  | 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: 23f471a9d6be4ffb388a42548ec7e61c71a66da05b36aaeec4fdb5600b22a73d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d01e3860887f183cb260b61644bed8123e1e9d523c206aa5ba04c1069257c4ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-05-20T20:00:18Z",
    "title_canon_sha256": "adb804aeccb0ce175094a5edd16fe606a25ff5c0c6a216adab1e147b39173fab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.4639",
    "kind": "arxiv",
    "version": 2
  }
}