Pith Number

pith:5WP3J5GW

pith:2013:5WP3J5GWZQFVIV7F7CWTPWRWZC

not attested not anchored not stored refs pending

Ap stars with variable periods

Ernst Paunzen, Gegory W. Henry, Jan Jan\'ik, Ji\v{r}\'i Krti\v{c}ka, Jozef \v{Z}i\v{z}\v{n}ovsk\'y, Juraj Zverko, Miloslav Zejda, Zden\v{e}k Mikul\'a\v{s}ek

arxiv:1310.6640 v1 · 2013-10-24 · 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{5WP3J5GWZQFVIV7F7CWTPWRWZC}

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	2026-05-18T03:09:08.723131Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed9fb4f4d6cc0b5457e5f8ad37da36c8b5e3914686a8f8249a1da7df25a2200b

Aliases

arxiv: 1310.6640 · arxiv_version: 1310.6640v1 · doi: 10.48550/arxiv.1310.6640 · pith_short_12: 5WP3J5GWZQFV · pith_short_16: 5WP3J5GWZQFVIV7F · pith_short_8: 5WP3J5GW

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/5WP3J5GWZQFVIV7F7CWTPWRWZC \
  | 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: ed9fb4f4d6cc0b5457e5f8ad37da36c8b5e3914686a8f8249a1da7df25a2200b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcfe2ffc4da54c178df0f50164861a01a67bb9e730ec997e9f0c7f5d87b454e7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-10-24T15:06:18Z",
    "title_canon_sha256": "3c06a3fc06dc42c0fd9f8f8bee6aef60a4073a9c1de09f43126577160bbf23da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.6640",
    "kind": "arxiv",
    "version": 1
  }
}