Pith Number

pith:FQ6VA6BO

pith:2021:FQ6VA6BO23DHQPDGUJ25U4FIW4

not attested not anchored not stored refs pending

Constant-roll $f(R)$ inflation compared with Cosmic Microwave Background anisotropies and swampland criteria

Jafar Sadeghi, Mehdi Shokri, Mohammad Reza Setare, Salvatore Capozziello

arxiv:2108.00175 v2 · 2021-07-31 · gr-qc · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FQ6VA6BO23DHQPDGUJ25U4FIW4}

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	2026-07-05T03:05:34.736200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c3d50782ed6c6783c66a275da70a8b7041239b522daaba33e3cf9206d1372f5

Aliases

arxiv: 2108.00175 · arxiv_version: 2108.00175v2 · doi: 10.48550/arxiv.2108.00175 · pith_short_12: FQ6VA6BO23DH · pith_short_16: FQ6VA6BO23DHQPDG · pith_short_8: FQ6VA6BO

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/FQ6VA6BO23DHQPDGUJ25U4FIW4 \
  | 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: 2c3d50782ed6c6783c66a275da70a8b7041239b522daaba33e3cf9206d1372f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39bc449ffe0f4d0d81c82051dcf4b3527cc88bdaafdfedb92ef2b3ff006d66ec",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-07-31T08:10:03Z",
    "title_canon_sha256": "8961d26c7a4cca0a084cbc0e6467382e8a5f01785fa2315ad61085f1ba158810"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.00175",
    "kind": "arxiv",
    "version": 2
  }
}