Pith Number

pith:IM2S4YSK

pith:2014:IM2S4YSKKUQHM22M5ALHESR3BP

not attested not anchored not stored refs pending

Empirical Period-Color and Amplitude-Color Relations for Classical Cepheids and RR Lyrae Variables

Anupam Bhardwaj, Chow-Choong Ngeow, Harinder P. Singh, Shashi M. Kanbur

arxiv:1409.4911 v1 · 2014-09-17 · astro-ph.SR

Open paper page JSON What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

Receipt and verification

First computed	2026-05-18T01:42:01.858488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43352e624a5520766b4ce816724a3b0bcdf2623b6558e3d7b067f51c3b3815c8

Aliases

arxiv: 1409.4911 · arxiv_version: 1409.4911v1 · doi: 10.48550/arxiv.1409.4911 · pith_short_12: IM2S4YSKKUQH · pith_short_16: IM2S4YSKKUQHM22M · pith_short_8: IM2S4YSK

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/IM2S4YSKKUQHM22M5ALHESR3BP \
  | 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: 43352e624a5520766b4ce816724a3b0bcdf2623b6558e3d7b067f51c3b3815c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f3da859d5a3b65df52f8d1ff4a3b6cb449ecf2b0bbae68fef5ba5d95a3ffaf5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-09-17T09:26:48Z",
    "title_canon_sha256": "f7ddd01d8ec9a543c6cddc92739665dae51889df2a2ddf5ad05861599f8bb100"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.4911",
    "kind": "arxiv",
    "version": 1
  }
}