Pith Number

pith:K2IWSPGJ

pith:2019:K2IWSPGJIMJ4XHI3O7CQMEB3KL

not attested not anchored not stored refs pending

The period-luminosity relation for delta Scuti stars using Gaia DR2 parallaxes

Daniel R. Hey, Elham Ziaali, Simon J. Murphy, Timothy R. Bedding, Timothy Van Reeth

arxiv:1904.08101 v2 · 2019-04-17 · 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{K2IWSPGJIMJ4XHI3O7CQMEB3KL}

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	2026-05-17T23:47:35.558250Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5691693cc94313cb9d1b77c506103b52ef6fb860d326a6ea53b70d0ddc056a9d

Aliases

arxiv: 1904.08101 · arxiv_version: 1904.08101v2 · doi: 10.48550/arxiv.1904.08101 · pith_short_12: K2IWSPGJIMJ4 · pith_short_16: K2IWSPGJIMJ4XHI3 · pith_short_8: K2IWSPGJ

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/K2IWSPGJIMJ4XHI3O7CQMEB3KL \
  | 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: 5691693cc94313cb9d1b77c506103b52ef6fb860d326a6ea53b70d0ddc056a9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fce7944cc3e642f2fd00b49f0e635e45360c00ee7a04fc83940b22f9b8ecfab0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-04-17T06:30:36Z",
    "title_canon_sha256": "ea1eb5921a7b0be25bdd20b2348dcb24d9895a41907d07e63894d42dc521471c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08101",
    "kind": "arxiv",
    "version": 2
  }
}