Pith Number

pith:VXZOT6VS

pith:2018:VXZOT6VSOEU2FTP5GCC2HA57ZY

not attested not anchored not stored refs pending

Scalar perturbations in cosmological $f(R)$ models: the cosmic screening approach

Alexander Zhuk, Maxim Eingorn, Ozgur Akarsu, Ruslan Brilenkov, Valerii Shulga

arxiv:1806.02669 v2 · 2018-06-07 · gr-qc · astro-ph.CO · hep-ph · 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{VXZOT6VSOEU2FTP5GCC2HA57ZY}

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	2026-05-18T00:08:53.978055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

adf2e9fab27129a2cdfd3085a383bfce24515fae883f6ecad25b2f99a0867648

Aliases

arxiv: 1806.02669 · arxiv_version: 1806.02669v2 · doi: 10.48550/arxiv.1806.02669 · pith_short_12: VXZOT6VSOEU2 · pith_short_16: VXZOT6VSOEU2FTP5 · pith_short_8: VXZOT6VS

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/VXZOT6VSOEU2FTP5GCC2HA57ZY \
  | 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: adf2e9fab27129a2cdfd3085a383bfce24515fae883f6ecad25b2f99a0867648

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7984faaa3cf54f41598db32bfa83d7787f42389e5ed5b632234d1a6448afd0e",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-06-07T13:27:29Z",
    "title_canon_sha256": "2242c4c66ac89525f4e50314e1bbb5f2f05993c6f6d6fcde775cd3b57a032b80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.02669",
    "kind": "arxiv",
    "version": 2
  }
}