Pith Number

pith:3WFZYSSH

pith:1999:3WFZYSSHIA3CACPGI6QF5GPEOD

not attested not anchored not stored refs pending

The Extragalactic Distance Scale Key Project XXVII. A Derivation of the Hubble Constant Using the Fundamental Plane and Dn-Sigma Relations in Leo I, Virgo, and Fornax

Alan Dressler, Barry F. Madore, Brad K. Gibson, Daniel D. Kelson, Edward A. Ajhar, Garth D. Illingworth, Holland C. Ford, Jeremy R. Mould, John A. Graham, John L. Tonry, John P. Blakeslee, John P. Huchra, Jr., Kim M. Sebo, Laura Ferrarese, Lucas M. Macri, Nancy A. Silbermann, Peter B. Stetson, Robert C. Kennicutt, Shaun M.G. Hughes, Shoko Sakai, Wendy L. Freedman

arxiv:astro-ph/9909222 v1 · 1999-09-14 · 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{3WFZYSSHIA3CACPGI6QF5GPEOD}

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	2026-05-18T03:47:42.373614Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd8b9c4a4740362009e647a05e99e470f8e4193211f33617c52fba0ac849681f

Aliases

arxiv: astro-ph/9909222 · arxiv_version: astro-ph/9909222v1 · doi: 10.48550/arxiv.astro-ph/9909222 · pith_short_12: 3WFZYSSHIA3C · pith_short_16: 3WFZYSSHIA3CACPG · pith_short_8: 3WFZYSSH

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/3WFZYSSHIA3CACPGI6QF5GPEOD \
  | 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: dd8b9c4a4740362009e647a05e99e470f8e4193211f33617c52fba0ac849681f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aec571b9a0d1329355a98f8c969412d7489a83b6bc7d8b6e940d8e99d6e67d75",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-09-14T02:46:11Z",
    "title_canon_sha256": "12dd1568d98d0fb191f21ba66ea5f173fbabe11d8bde8b95ba07d608b6d3c636"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9909222",
    "kind": "arxiv",
    "version": 1
  }
}