Pith Number

pith:BIRUWR7J

pith:2014:BIRUWR7JSGPEAOKC7S6FGDAJJN

not attested not anchored not stored refs pending

Reconstructing the inflationary $f(R)$ from observations

Guido Cognola, Luciano Vanzo, Massimiliano Rinaldi, Sergio Zerbini

arxiv:1406.1096 v4 · 2014-06-04 · gr-qc · astro-ph.CO · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BIRUWR7JSGPEAOKC7S6FGDAJJN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:45:48.326567Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a234b47e9919e403942fcbc530c094b6a10c90a655f43dd95330ff5d9016997

Aliases

arxiv: 1406.1096 · arxiv_version: 1406.1096v4 · doi: 10.48550/arxiv.1406.1096 · pith_short_12: BIRUWR7JSGPE · pith_short_16: BIRUWR7JSGPEAOKC · pith_short_8: BIRUWR7J

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/BIRUWR7JSGPEAOKC7S6FGDAJJN \
  | 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: 0a234b47e9919e403942fcbc530c094b6a10c90a655f43dd95330ff5d9016997

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b472b0285bf2bcaacd3f49417b2bc8dee5615d57f148baa9302f7a60c63be1cb",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-06-04T16:22:06Z",
    "title_canon_sha256": "135605bc74ab80d60b1de7e882a669a7e25e17787f5f1248d9ac49d57d3442ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.1096",
    "kind": "arxiv",
    "version": 4
  }
}