Pith Number

pith:V4CGWPIL

pith:2002:V4CGWPILKH42WJ5HNUOUYPFXER

not attested not anchored not stored refs pending

`Hyper Parameters' Approach to Joint Estimation: Applications to Cepheid-Calibrated Distances and X-Ray Clusters

Ankara), Cambridge, Cambridge), METU, Munich), Ofer Lahav (IoA, Pirin Erdogdu (IoA, Stefano Ettori (ESO

arxiv:astro-ph/0202357 v4 · 2002-02-19 · 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{V4CGWPILKH42WJ5HNUOUYPFXER}

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	2026-07-04T16:29:25.870100Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af046b3d0b51f9ab27a76d1d4c3cb72470303bb5a0c108d78747d95649838def

Aliases

arxiv: astro-ph/0202357 · arxiv_version: astro-ph/0202357v4 · doi: 10.48550/arxiv.astro-ph/0202357 · pith_short_12: V4CGWPILKH42 · pith_short_16: V4CGWPILKH42WJ5H · pith_short_8: V4CGWPIL

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/V4CGWPILKH42WJ5HNUOUYPFXER \
  | 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: af046b3d0b51f9ab27a76d1d4c3cb72470303bb5a0c108d78747d95649838def

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dea9a49388569f6053e79ff5dda971c0ece59c30b440a8e7d1a9b719c13777d7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-19T20:03:51Z",
    "title_canon_sha256": "478fe9d1dbd5975cab25134206748bcfbf3f80af262be9452d741f5d038c60ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202357",
    "kind": "arxiv",
    "version": 4
  }
}