Pith Number

pith:YSSXQY5L

pith:2010:YSSXQY5LJCJ5ZIKHTTPAJ7VV5G

not attested not anchored not stored refs pending

Period-luminosity relations of type II Cepheids in the Magellanic Clouds

(2) South African Astronomical Observatory, 3), (3) University of Cape Town, (4) Warsaw University), Igor Soszynski (4) ((1) Kiso Observatory, Michael W. Feast (2, Noriyuki Matsunaga (1), University of Tokyo

arxiv:1012.0098 v2 · 2010-12-01 · astro-ph.SR · 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{YSSXQY5LJCJ5ZIKHTTPAJ7VV5G}

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	2026-05-18T02:04:36.894419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4a57863ab4893dca1479cde04feb5e9ac3bc89711f03c55c2e89c766bbd86eb

Aliases

arxiv: 1012.0098 · arxiv_version: 1012.0098v2 · doi: 10.48550/arxiv.1012.0098 · pith_short_12: YSSXQY5LJCJ5 · pith_short_16: YSSXQY5LJCJ5ZIKH · pith_short_8: YSSXQY5L

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/YSSXQY5LJCJ5ZIKHTTPAJ7VV5G \
  | 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: c4a57863ab4893dca1479cde04feb5e9ac3bc89711f03c55c2e89c766bbd86eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec4c0ad3ce8cbceece9ce1a6b56f288117ed8d9a4653782c6fa8e38153986dec",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-12-01T05:40:52Z",
    "title_canon_sha256": "732ac6e8e266accff73369b5a82ad5c298e542e51452ff175a67b521c9db4109"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.0098",
    "kind": "arxiv",
    "version": 2
  }
}