Pith Number

pith:RFXAYA4N

pith:2002:RFXAYA4NQVIRVN6JXV7Q564UWD

not attested not anchored not stored refs pending

Variable Stars in Leo A: RR Lyraes, Short-period Cepheids, and Implications on Stellar Content

A. A. Cole, A. E. Dolphin, A. Saha, E. D. Skillman, E. Tolstoy, J. Claver, J. S. Gallagher, M. Mateo, R. C. Dohm-Palmer

arxiv:astro-ph/0202381 v1 · 2002-02-20 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RFXAYA4NQVIRVN6JXV7Q564UWD}

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	2026-07-04T15:43:52.129530Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

896e0c038d85511ab7c9bd7f0efb94b0cf6261e514cfeb9d03ea270380bb9a13

Aliases

arxiv: astro-ph/0202381 · arxiv_version: astro-ph/0202381v1 · doi: 10.48550/arxiv.astro-ph/0202381 · pith_short_12: RFXAYA4NQVIR · pith_short_16: RFXAYA4NQVIRVN6J · pith_short_8: RFXAYA4N

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/RFXAYA4NQVIRVN6JXV7Q564UWD \
  | 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: 896e0c038d85511ab7c9bd7f0efb94b0cf6261e514cfeb9d03ea270380bb9a13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14896c6bc93d6abb8fd5c2fedd5adb75f3f0cd8021986dba27c0591ea9212ae9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-20T19:39:33Z",
    "title_canon_sha256": "da4f29e7773b9418ffd379f74ac7fa92fe2e60a2b098e654222aa151b897b430"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202381",
    "kind": "arxiv",
    "version": 1
  }
}