Pith Number

pith:U3MYPM65

pith:2015:U3MYPM65DZJ5LZ5H7JU6ITAUNF

not attested not anchored not stored refs pending

Observational calibration of the projection factor of Cepheids I. The Type II Cepheid kappa Pavonis

Alexandre Gallenne, Antoine M\'erand, Jean-Baptiste Le Bouquin, Joanne Breitfelder, Laszlo Szabados, Matthew Willson, Pierre Kervella, Richard Anderson

arxiv:1503.05176 v1 · 2015-03-17 · astro-ph.IM · 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{U3MYPM65DZJ5LZ5H7JU6ITAUNF}

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	2026-05-18T01:40:50.449900Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6d987b3dd1e53d5e7a7fa69e44c146969810753be8cd56c58d16868ad9b128a

Aliases

arxiv: 1503.05176 · arxiv_version: 1503.05176v1 · doi: 10.48550/arxiv.1503.05176 · pith_short_12: U3MYPM65DZJ5 · pith_short_16: U3MYPM65DZJ5LZ5H · pith_short_8: U3MYPM65

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/U3MYPM65DZJ5LZ5H7JU6ITAUNF \
  | 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: a6d987b3dd1e53d5e7a7fa69e44c146969810753be8cd56c58d16868ad9b128a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcb1e3661c11a0000f993608c013a2d97b9a1dddcc0d1b55de48cbc3ecc00068",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-03-17T19:26:44Z",
    "title_canon_sha256": "1841c7ec7f1627fbad0537b05ee1057154e53c22505437cb9fce316b8401568e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.05176",
    "kind": "arxiv",
    "version": 1
  }
}