Pith Number

pith:7FJOX5EQ

pith:2014:7FJOX5EQLP4WWJ4WVEGDQERCKW

not attested not anchored not stored refs pending

Cosmological bounces in spatially flat FRW spacetimes in metric f(R) gravity

Kaushik Bhattacharya, Niladri Paul, Saikat Nil Chakrabarty

arxiv:1405.0139 v2 · 2014-05-01 · gr-qc · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7FJOX5EQLP4WWJ4WVEGDQERCKW}

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	2026-05-18T02:32:00.022232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f952ebf4905bf96b2796a90c38122255a49bbd36d247d6fdcfbd6ea1a3ae67dd

Aliases

arxiv: 1405.0139 · arxiv_version: 1405.0139v2 · doi: 10.48550/arxiv.1405.0139 · pith_short_12: 7FJOX5EQLP4W · pith_short_16: 7FJOX5EQLP4WWJ4W · pith_short_8: 7FJOX5EQ

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/7FJOX5EQLP4WWJ4WVEGDQERCKW \
  | 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: f952ebf4905bf96b2796a90c38122255a49bbd36d247d6fdcfbd6ea1a3ae67dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d4aa29db1db45a8bbd3c8c57c2a9ff517abc34c374c164d678edca0142d4dc9",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-05-01T11:42:44Z",
    "title_canon_sha256": "a5dd6998004ff086a4ef33d70fc3f113b0af395ecf484774f34086d55903baac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.0139",
    "kind": "arxiv",
    "version": 2
  }
}