Pith Number

pith:2I7FXX6S

pith:2021:2I7FXX6SQTXNY7W6WVXCQLFON3

not attested not anchored not stored refs pending

A rapidly evolving high-amplitude $\delta$ Scuti star crossing the Hertzsprung Gap

Hui-Fang Xue, Jia-Shu Niu

arxiv:2102.10259 v2 · 2021-02-20 · 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{2I7FXX6SQTXNY7W6WVXCQLFON3}

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.

Cited by

1 paper in Pith

Re-examining Super-Nyquist Frequencies of 68 $\delta$ Scuti Stars Utilizing the Kepler Long Cadence Photometry

Receipt and verification

First computed	2026-07-05T05:10:34.251586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d23e5bdfd284eedc7edeb56e282cae6ef1c5cb7e1f2eca47dbeb8afd388d0415

Aliases

arxiv: 2102.10259 · arxiv_version: 2102.10259v2 · doi: 10.48550/arxiv.2102.10259 · pith_short_12: 2I7FXX6SQTXN · pith_short_16: 2I7FXX6SQTXNY7W6 · pith_short_8: 2I7FXX6S

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/2I7FXX6SQTXNY7W6WVXCQLFON3 \
  | 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: d23e5bdfd284eedc7edeb56e282cae6ef1c5cb7e1f2eca47dbeb8afd388d0415

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "512bf5e767e2a3ca20143f4adc2bf9a1c5c8b4a0c6dc054881ce8df8c4e2f738",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-02-20T05:15:06Z",
    "title_canon_sha256": "b764ea8309330839aa262ada25dcbcf435a13cb5fc4810ee2fdee67ced5e22d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.10259",
    "kind": "arxiv",
    "version": 2
  }
}