Pith Number

pith:QEWDLPNO

pith:1998:QEWDLPNONB2EK5RQKP2ZRN27YD

not attested not anchored not stored refs pending

The RR Lyrae Distance Scale

Andrew Gould (Ohio State University), Piotr Popowski

arxiv:astro-ph/9808006 v1 · 1998-08-02 · 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{QEWDLPNONB2EK5RQKP2ZRN27YD}

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	2026-05-18T01:21:56.430196Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

812c35bdae687445763053f598b75fc0fabbf36703673225aa3cd70bbd17f880

Aliases

arxiv: astro-ph/9808006 · arxiv_version: astro-ph/9808006v1 · doi: 10.48550/arxiv.astro-ph/9808006 · pith_short_12: QEWDLPNONB2E · pith_short_16: QEWDLPNONB2EK5RQ · pith_short_8: QEWDLPNO

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/QEWDLPNONB2EK5RQKP2ZRN27YD \
  | 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: 812c35bdae687445763053f598b75fc0fabbf36703673225aa3cd70bbd17f880

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e645f8e2ddebcf966be611d1f6250d801f8c599882c2cc7b99effdefd9ae7156",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-08-02T13:13:42Z",
    "title_canon_sha256": "fec5ca050a3e88d3f92d6e944b845e0b33ba027e17e0aca5b91e25b1e4d50cfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9808006",
    "kind": "arxiv",
    "version": 1
  }
}