Pith Number

pith:XVOC4OWZ

pith:2011:XVOC4OWZML5P3W5BMYC4JJCCQ2

not attested not anchored not stored refs pending

The 17 min orbital period in the Ultra Compact X-ray Binary 4U 0513-40

A. Bazzano, L. Natalucci, M. Fiocchi, P. Ubertini, R. Landi

arxiv:1103.4233 v1 · 2011-03-22 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XVOC4OWZML5P3W5BMYC4JJCCQ2}

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	2026-05-18T02:02:48.385805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd5c2e3ad962fafddba16605c4a44286869be4d4fec232154cd28b4051dc7087

Aliases

arxiv: 1103.4233 · arxiv_version: 1103.4233v1 · doi: 10.48550/arxiv.1103.4233 · pith_short_12: XVOC4OWZML5P · pith_short_16: XVOC4OWZML5P3W5B · pith_short_8: XVOC4OWZ

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/XVOC4OWZML5P3W5BMYC4JJCCQ2 \
  | 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: bd5c2e3ad962fafddba16605c4a44286869be4d4fec232154cd28b4051dc7087

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01527cc95ad869516e5ce73703d7e3f369ac22c7e5e54b72b40a88d77b70ba11",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-03-22T09:42:07Z",
    "title_canon_sha256": "0ab382edada9ee5b1462805e75d67da2950cb1a59aad65f7acaf2e282b1f6c78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.4233",
    "kind": "arxiv",
    "version": 1
  }
}