Pith Number

pith:W7OKL5EJ

pith:2008:W7OKL5EJ4HUSCQADGRNFIODI3J

not attested not anchored not stored refs pending

The shortest period field contact binary

Slavek M. Rucinski, Theodor Pribulla (Department of Astronomy, University of Toronto)

arxiv:0805.4836 v1 · 2008-05-30 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W7OKL5EJ4HUSCQADGRNFIODI3J}

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	2026-07-04T17:11:04.353506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7dca5f489e1e9214003345a543868da54e450b4f3bf33d945277766aca88832

Aliases

arxiv: 0805.4836 · arxiv_version: 0805.4836v1 · doi: 10.48550/arxiv.0805.4836 · pith_short_12: W7OKL5EJ4HUS · pith_short_16: W7OKL5EJ4HUSCQAD · pith_short_8: W7OKL5EJ

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/W7OKL5EJ4HUSCQADGRNFIODI3J \
  | 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: b7dca5f489e1e9214003345a543868da54e450b4f3bf33d945277766aca88832

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c34e3644dd6a1b2cbe142a88ca719ef12466de3e8153f2c9eed99ac03e40c348",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-05-30T19:56:13Z",
    "title_canon_sha256": "b1b5aabecdf34fd60287f07e286d3fe64c3efe3be4f7569869e033f336e13b54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.4836",
    "kind": "arxiv",
    "version": 1
  }
}