Pith Number

pith:CKDE4EW6

pith:2019:CKDE4EW6NOSFKKPNOI2RTQK2KP

not attested not anchored not stored refs pending

Light Curve Parameters of Cepheid and RR Lyrae Variables at Multiple Wavelengths $-$ Models vs. Observations

Anupam Bhardwaj, Harinder P. Singh, Marcella Marconi, Shashi Kanbur, Susmita Das

arxiv:1904.08175 v1 · 2019-04-17 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CKDE4EW6NOSFKKPNOI2RTQK2KP}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-17T23:48:18.538932Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12864e12de6ba45529ed723519c15a53ebf980c2455b6c0a80439a64eef9cae7

Aliases

arxiv: 1904.08175 · arxiv_version: 1904.08175v1 · doi: 10.48550/arxiv.1904.08175 · pith_short_12: CKDE4EW6NOSF · pith_short_16: CKDE4EW6NOSFKKPN · pith_short_8: CKDE4EW6

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/CKDE4EW6NOSFKKPNOI2RTQK2KP \
  | 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: 12864e12de6ba45529ed723519c15a53ebf980c2455b6c0a80439a64eef9cae7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "001c8b6cf7fab59c8f330765262a438e060830d0fcbd3d8671a079ae125db4c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-04-17T10:44:28Z",
    "title_canon_sha256": "6cd2dcbcaae7e01e3303ab3ed9e13f3a70317ad4b703bf085f4d81b99b0d9a0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08175",
    "kind": "arxiv",
    "version": 1
  }
}