Pith Number

pith:F7DRYQTL

pith:2012:F7DRYQTLVDNCQN7DP6EBIU5Y5M

not attested not anchored not stored refs pending

On the periodicities present in the optical light curves of SMC Be/X-ray binaries

A. J. Bird, A. Udalski, M. J. Coe, V. A. McBride

arxiv:1204.5426 v1 · 2012-04-24 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F7DRYQTLVDNCQN7DP6EBIU5Y5M}

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	2026-05-18T01:57:46.666558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fc71c426ba8da2837e37f881453b8eb3ebac93b46415c05ce3d388cf50af869

Aliases

arxiv: 1204.5426 · arxiv_version: 1204.5426v1 · doi: 10.48550/arxiv.1204.5426 · pith_short_12: F7DRYQTLVDNC · pith_short_16: F7DRYQTLVDNCQN7D · pith_short_8: F7DRYQTL

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/F7DRYQTLVDNCQN7DP6EBIU5Y5M \
  | 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: 2fc71c426ba8da2837e37f881453b8eb3ebac93b46415c05ce3d388cf50af869

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26f6e2ea346cb398f8968144cf00edfbaf8d581a377e34a4d567fe8aa9666d7d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-04-24T16:33:30Z",
    "title_canon_sha256": "9faa9be8c315a55010c659037e2f80fda43aa76c576659401da8fc8b82c40921"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5426",
    "kind": "arxiv",
    "version": 1
  }
}