Pith Number

pith:YMLPTEJA

pith:1997:YMLPTEJA5ANP4GY5ORSEGHDQRI

not attested not anchored not stored refs pending

The Coma - Leo I Distance Ratio and the Hubble Constant

Michael D. Gregg (IGPP/LLNL)

arxiv:astro-ph/9703031 v1 · 1997-03-05 · 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{YMLPTEJA5ANP4GY5ORSEGHDQRI}

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	2026-05-18T01:07:38.626449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c316f99120e81afe1b1d7464431c708a0afc85cde7b8ae6e700619db819132eb

Aliases

arxiv: astro-ph/9703031 · arxiv_version: astro-ph/9703031v1 · doi: 10.48550/arxiv.astro-ph/9703031 · pith_short_12: YMLPTEJA5ANP · pith_short_16: YMLPTEJA5ANP4GY5 · pith_short_8: YMLPTEJA

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/YMLPTEJA5ANP4GY5ORSEGHDQRI \
  | 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: c316f99120e81afe1b1d7464431c708a0afc85cde7b8ae6e700619db819132eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "637b0cb8f3b26daf20914f428c8e47541e735a2966cd5f738f5f1477addc932e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-03-05T21:05:41Z",
    "title_canon_sha256": "454feb1389de111bb512042672e3997678739aef90a336525f9a239eaae2fc01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9703031",
    "kind": "arxiv",
    "version": 1
  }
}