Pith Number

pith:LTYUCQME

pith:1998:LTYUCQME7SY2723RSENJO6B3J2

not attested not anchored not stored refs pending

The HST Key Project on the Extragalactic Distance Scale XVII. The Cepheid Distance to NGC 4725

Abhijit Saha, Anne M. Turner, Barry F. Madore, Brad K. Gibson, Charles F. Prosser, Daniel D. Kelson, Fabio Bresolin, Garth D. Illingworth, Holland C. Ford, Jeremy R. Mould, John A. Graham, John G. Hoessel, John P. Huchra, Jr., Kim M. Sebo, Laura Ferrarese, Lucas M. Macri, Mingsheng Han, Nancy A. Silbermann, Paul Harding, Peter B. Stetson, Randy L. Phelps, Robert C. Kennicutt, Shaun M.G. Hughes, Shoko Sakai, Wendy L. Freedman

arxiv:astro-ph/9810003 v1 · 1998-10-01 · 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{LTYUCQME7SY2723RSENJO6B3J2}

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	2026-05-18T03:47:42.562818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5cf1414184fcb1afeb71911a97783b4e9ef35770988db8b45fc0a242a89fc8bd

Aliases

arxiv: astro-ph/9810003 · arxiv_version: astro-ph/9810003v1 · doi: 10.48550/arxiv.astro-ph/9810003 · pith_short_12: LTYUCQME7SY2 · pith_short_16: LTYUCQME7SY2723R · pith_short_8: LTYUCQME

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/LTYUCQME7SY2723RSENJO6B3J2 \
  | 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: 5cf1414184fcb1afeb71911a97783b4e9ef35770988db8b45fc0a242a89fc8bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f17eee489339c5f49cd5c168ad5b13c80f15479d8558bad1a05d74900d9e4e9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-10-01T04:53:47Z",
    "title_canon_sha256": "63da5d97ac8e3fed33a604eca749b3c9a08fdcd7d46ad4d58e7a3b62bc1c4a2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9810003",
    "kind": "arxiv",
    "version": 1
  }
}