Pith Number

pith:HT4NZT26

pith:1998:HT4NZT26OJ76VHBAKZKGYCSJXX

not attested not anchored not stored refs pending

The HST Key Project on the Extragalactic Distance Scale XII. The Discovery of Cepheids and a New Distance to NGC 2541

Abhijit Saha, Barry F. Madore, Brad K. Gibson, Charles F. Prosser, Fabio Bresolin, Garth D. Illingworth, Holland C. Ford, Jeremy R. Mould, John A. Graham, John G. Hoessel, John Huchra, Jr., Laura Ferrarese, Mingsheng Han, N.A. Silbermann, Peter B. Stetson, Randy Phelps, Robert C. Kennicutt, Shaun M. Hughes, Shoko Sakai, Wendy L. Freedman

arxiv:astro-ph/9805365 v1 · 1998-05-29 · 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{HT4NZT26OJ76VHBAKZKGYCSJXX}

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	2026-05-18T03:47:42.594602Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cf8dccf5e727fea9c2056546c0a49bdf20abebaaf8b1ffd4b857aa394da5df1

Aliases

arxiv: astro-ph/9805365 · arxiv_version: astro-ph/9805365v1 · doi: 10.48550/arxiv.astro-ph/9805365 · pith_short_12: HT4NZT26OJ76 · pith_short_16: HT4NZT26OJ76VHBA · pith_short_8: HT4NZT26

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/HT4NZT26OJ76VHBAKZKGYCSJXX \
  | 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: 3cf8dccf5e727fea9c2056546c0a49bdf20abebaaf8b1ffd4b857aa394da5df1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "feb68c5ed5977cd854402725cbd1a653bcc4b98a819ba456ca50deaa85b36ba2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-05-29T12:44:32Z",
    "title_canon_sha256": "6b07d83a8fbe38aa6c8351e8bf6f37f33df66b3efaefaacd84a0a0d5a36aa671"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9805365",
    "kind": "arxiv",
    "version": 1
  }
}