Pith Number

pith:IQ4M35RY

pith:2015:IQ4M35RY4SGQHDMSYBK4VHRSB2

not attested not anchored not stored refs pending

Viscous Cosmology

C. M. S. Barbosa, H. E. S. Velten, J. C. Fabris, O. F. Piattella, W. Zimdahl

arxiv:1512.00921 v1 · 2015-12-03 · astro-ph.CO · gr-qc · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IQ4M35RY4SGQHDMSYBK4VHRSB2}

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	2026-05-18T01:25:23.833623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4438cdf638e48d038d92c055ca9e320e845f3ae882da9a48765d0e13389d77e5

Aliases

arxiv: 1512.00921 · arxiv_version: 1512.00921v1 · doi: 10.48550/arxiv.1512.00921 · pith_short_12: IQ4M35RY4SGQ · pith_short_16: IQ4M35RY4SGQHDMS · pith_short_8: IQ4M35RY

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/IQ4M35RY4SGQHDMSYBK4VHRSB2 \
  | 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: 4438cdf638e48d038d92c055ca9e320e845f3ae882da9a48765d0e13389d77e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8bebea8619f937ebe8acaac064701c56d2767f03fb3d0e39d318221c4ecc3f49",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-12-03T01:48:29Z",
    "title_canon_sha256": "2a28a3d9ebb9acf99e4ce56d0642b236f61a969a39b07fdf5f126c315b28196d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.00921",
    "kind": "arxiv",
    "version": 1
  }
}