Pith Number

pith:OBGN4PSZ

pith:2003:OBGN4PSZYPNTZSMP7XJ4QYSNPV

not attested not anchored not stored refs pending

Accelerating expansion of the universe may be caused by inhomogeneities

Gyula Bene, Matyas Vasuth, Viktor Czinner

arxiv:astro-ph/0308161 v4 · 2003-08-10 · 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{OBGN4PSZYPNTZSMP7XJ4QYSNPV}

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	2026-05-18T01:40:38.397586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

704cde3e59c3db3cc98ffdd3c8624d7d54088b8ddba7b4dee9c2792cf0c2e815

Aliases

arxiv: astro-ph/0308161 · arxiv_version: astro-ph/0308161v4 · doi: 10.48550/arxiv.astro-ph/0308161 · pith_short_12: OBGN4PSZYPNT · pith_short_16: OBGN4PSZYPNTZSMP · pith_short_8: OBGN4PSZ

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/OBGN4PSZYPNTZSMP7XJ4QYSNPV \
  | 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: 704cde3e59c3db3cc98ffdd3c8624d7d54088b8ddba7b4dee9c2792cf0c2e815

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f630e75e436ab4cc9c0fd4e2c7000f8eb2938a2f7e525ee184de0a03d63840d1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-08-10T09:38:26Z",
    "title_canon_sha256": "d78722f7bf614258c85a216537ecb27d151926d54b09a2afdb0f49f5dd211ec8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0308161",
    "kind": "arxiv",
    "version": 4
  }
}