Pith Number

pith:HJU3BCDO

pith:2002:HJU3BCDOC74Q27UGEYLWMDJD6E

not attested not anchored not stored refs pending

Calibrating the Cepheid Period-Luminosity relation with the VLTI

C. Papaliolios, D. Sasselov, J.T. Armstrong, M. Karovska, M. Marengo, T.E. Nordgren

arxiv:astro-ph/0204168 v1 · 2002-04-09 · 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{HJU3BCDOC74Q27UGEYLWMDJD6E}

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	2026-05-18T01:40:42.997904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a69b0886e17f90d7e862617660d23f13007c9d3e0678376b3bc3b111ce67b59

Aliases

arxiv: astro-ph/0204168 · arxiv_version: astro-ph/0204168v1 · doi: 10.48550/arxiv.astro-ph/0204168 · pith_short_12: HJU3BCDOC74Q · pith_short_16: HJU3BCDOC74Q27UG · pith_short_8: HJU3BCDO

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/HJU3BCDOC74Q27UGEYLWMDJD6E \
  | 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: 3a69b0886e17f90d7e862617660d23f13007c9d3e0678376b3bc3b111ce67b59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6c5d44fc764de3a7d60da2bd7d189f3c51767f6104f8fff64afe412849ddc63",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-04-09T23:47:39Z",
    "title_canon_sha256": "96342cf7dfea5c3f6728e029ff44b7e46f74358daad77cbf61db52639fe80429"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0204168",
    "kind": "arxiv",
    "version": 1
  }
}