Pith Number

pith:R4COHCVY

pith:2018:R4COHCVYT2PRMI3WDWKVWBOQSY

not attested not anchored not stored refs pending

Metal-Poor Type II Cepheids with Periods Less Than Three Days

C. E. Davis, E. M. Farrell, G. Wallerstein, I. Saviane, I. Yegorova, S. Andrievsky, S. Belik, S. Korotin, V. Kovtyukh

arxiv:1803.05041 v1 · 2018-03-13 · 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{R4COHCVYT2PRMI3WDWKVWBOQSY}

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	2026-05-18T00:18:51.488984Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f04e38ab89e9f1623761d955b05d0963707e0f5fe565488370e7d9b9d0ceb07

Aliases

arxiv: 1803.05041 · arxiv_version: 1803.05041v1 · doi: 10.48550/arxiv.1803.05041 · pith_short_12: R4COHCVYT2PR · pith_short_16: R4COHCVYT2PRMI3W · pith_short_8: R4COHCVY

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/R4COHCVYT2PRMI3WDWKVWBOQSY \
  | 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: 8f04e38ab89e9f1623761d955b05d0963707e0f5fe565488370e7d9b9d0ceb07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85399b370faf3475285213bc73103015e23043af3a56bf92066c719c1a35c6f7",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-03-13T21:01:31Z",
    "title_canon_sha256": "78d37fa383fb5f9ed97c08842a653fd2694740242178a6c3a7bfb12ddef36673"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.05041",
    "kind": "arxiv",
    "version": 1
  }
}