Pith Number

pith:UA3LWN6P

pith:2001:UA3LWN6PFLA334UTLYKSGESUZ2

not attested not anchored not stored refs pending

Can Geometric Test Probe the Cosmic Equation of State ?

Hiroaki Nishioka (Hiroshima University), Kazuhiro Yamamoto

arxiv:astro-ph/0101172 v1 · 2001-01-11 · 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{UA3LWN6PFLA334UTLYKSGESUZ2}

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	2026-07-04T16:22:33.612672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a036bb37cf2ac1bdf2935e15231254ce874187f438d1370c700bb66d4eaae68c

Aliases

arxiv: astro-ph/0101172 · arxiv_version: astro-ph/0101172v1 · doi: 10.48550/arxiv.astro-ph/0101172 · pith_short_12: UA3LWN6PFLA3 · pith_short_16: UA3LWN6PFLA334UT · pith_short_8: UA3LWN6P

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/UA3LWN6PFLA334UTLYKSGESUZ2 \
  | 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: a036bb37cf2ac1bdf2935e15231254ce874187f438d1370c700bb66d4eaae68c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "636d1f552e02818abbcf5b12c5a703828a3dc05259a56612ad8ba508f2db73d5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-01-11T03:08:18Z",
    "title_canon_sha256": "376f4b550402fe36aca0e9a2181982eea47af62941f65c841e544939ecd84cdf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0101172",
    "kind": "arxiv",
    "version": 1
  }
}