Pith Number

pith:CNFZ3FPZ

pith:2018:CNFZ3FPZYBWPEH4X4Y3WMKLQUE

not attested not anchored not stored refs pending

A Data-driven Study of RR Lyrae Near-IR Light Curves: Principal Component Analysis, Robust Fits, and Metallicity Estimates

Eva K. Grebel, Gergely Hajdu, Istv\'an D\'ek\'any, Johanna Jurcsik, M\'arcio Catelan

arxiv:1804.01456 v1 · 2018-04-04 · 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{CNFZ3FPZYBWPEH4X4Y3WMKLQUE}

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	2026-05-18T00:17:03.517867Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

134b9d95f9c06cf21f97e637662970a108ac47339b2b27757f829146d71c42f9

Aliases

arxiv: 1804.01456 · arxiv_version: 1804.01456v1 · doi: 10.48550/arxiv.1804.01456 · pith_short_12: CNFZ3FPZYBWP · pith_short_16: CNFZ3FPZYBWPEH4X · pith_short_8: CNFZ3FPZ

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/CNFZ3FPZYBWPEH4X4Y3WMKLQUE \
  | 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: 134b9d95f9c06cf21f97e637662970a108ac47339b2b27757f829146d71c42f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "599f73690e079abc51c2dc523251108a3e8e35e48483fb2f31e6e3597a46badb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-04-04T15:11:02Z",
    "title_canon_sha256": "59c4d4c4adb9266bb767fdcc44c999aeee98cc58cd854067f56d1b759a46eb8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01456",
    "kind": "arxiv",
    "version": 1
  }
}