Pith Number

pith:V6T3SL6P

pith:1998:V6T3SL6PDVS2RQC4NVB2C7ZGEX

not attested not anchored not stored refs pending

The Hubble Space Telescope Extragalactic Distance Scale Key Project. X. The Cepheid Distance to NGC 7331

Abi Saha, Barry F. Madore, Brad K. Gibson, Garth D. Illingworth, H0 Key Project: Shaun M. G. Hughes, Holland Ford, Jeremy. R. Mould, John A. Graham, John Hoessel, John Huchra, Laura Ferrarese, Mingsheng Han, Nancy A. Silbermann, Paul Harding, Peter B. Stetson, Randy Phelps, Robert C. Kennicutt, Robert Hill, Shoko Sakai, Wendy L. Freedman

arxiv:astro-ph/9802184 v1 · 1998-02-13 · 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{V6T3SL6PDVS2RQC4NVB2C7ZGEX}

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	2026-05-18T00:53:28.196829Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

afa7b92fcf1d65a8c05c6d43a17f2625ca4478b46fc89c2e2bddf95d850eb193

Aliases

arxiv: astro-ph/9802184 · arxiv_version: astro-ph/9802184v1 · doi: 10.48550/arxiv.astro-ph/9802184 · pith_short_12: V6T3SL6PDVS2 · pith_short_16: V6T3SL6PDVS2RQC4 · pith_short_8: V6T3SL6P

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/V6T3SL6PDVS2RQC4NVB2C7ZGEX \
  | 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: afa7b92fcf1d65a8c05c6d43a17f2625ca4478b46fc89c2e2bddf95d850eb193

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff7079649d5d57e8df2091a26a721e4482b643159b165fdc4dfda9f641903119",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-02-13T17:07:42Z",
    "title_canon_sha256": "2d4f255c25c7a5f297f117b266547f75627b307b5fcd837f1138e851e160af23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9802184",
    "kind": "arxiv",
    "version": 1
  }
}