Pith Number

pith:HRDDLYRG

pith:2011:HRDDLYRGB22O4VOCOHPEDHIB5O

not attested not anchored not stored refs pending

The Galactic Calibration of the Cepheid Period-Luminosity Relation and its Implications for the Universal Distance Scale

Arne Henden, Daniel J. Majaess, David Balam, David G. Turner, David J. Lane, J. Rosvick

arxiv:1103.0275 v1 · 2011-03-01 · astro-ph.SR · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HRDDLYRGB22O4VOCOHPEDHIB5O}

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	2026-05-18T04:27:35.405956Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c4635e2260eb4ee55c271de419d01eba029c25fdda2c789ddfad0810954b176

Aliases

arxiv: 1103.0275 · arxiv_version: 1103.0275v1 · doi: 10.48550/arxiv.1103.0275 · pith_short_12: HRDDLYRGB22O · pith_short_16: HRDDLYRGB22O4VOC · pith_short_8: HRDDLYRG

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/HRDDLYRGB22O4VOCOHPEDHIB5O \
  | 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: 3c4635e2260eb4ee55c271de419d01eba029c25fdda2c789ddfad0810954b176

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50bda23bcf5f328b840023c2c69ad0afcbd131dc340506108098d616f828a833",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-03-01T21:00:01Z",
    "title_canon_sha256": "c1068a08640c57e2704195f1fbc8e27d9a70d1a34fbfd7e3ddaad5dea9918bd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.0275",
    "kind": "arxiv",
    "version": 1
  }
}