Pith Number

pith:F7H46DML

pith:1999:F7H46DMLQG5GG5OXSIHVPPUYCS

not attested not anchored not stored refs pending

The HST Key Project on the Extragalactic Distance Scale XXV. A Recalibration of Cepheid Distances to Type Ia Supernovae and the Value of the Hubble Constant

Barry F. Madore, Brad K. Gibson, Caleb I. Fassett, Daniel D. Kelson, Garth D. Illingworth, Jeremy R. Mould, John A. Graham, 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/9908149 v1 · 1999-08-13 · 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{F7H46DMLQG5GG5OXSIHVPPUYCS}

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	2026-05-18T03:47:42.388906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fcfcf0d8b81ba6375d7920f57be98149629747cd8c90cee9d8225bfd632c782

Aliases

arxiv: astro-ph/9908149 · arxiv_version: astro-ph/9908149v1 · doi: 10.48550/arxiv.astro-ph/9908149 · pith_short_12: F7H46DMLQG5G · pith_short_16: F7H46DMLQG5GG5OX · pith_short_8: F7H46DML

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/F7H46DMLQG5GG5OXSIHVPPUYCS \
  | 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: 2fcfcf0d8b81ba6375d7920f57be98149629747cd8c90cee9d8225bfd632c782

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6221fb13f72d4b11b0cde16130ea24635d6933207e02475b3ec4336eb2dff362",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-08-13T16:28:52Z",
    "title_canon_sha256": "d865817e964b871c66f99af53664d3618d2aee10a7c67dc824ccd3924c07cf15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9908149",
    "kind": "arxiv",
    "version": 1
  }
}