Pith Number

pith:NIYK4XS3

pith:2019:NIYK4XS3CPPZ5OE7V6LSH5NJ5T

not attested not anchored not stored refs pending

Swampland conjecture in $f(R)$ gravity by the Noether Symmetry Approach

Leila Lobato Graef, Micol Benetti, Salvatore Capozziello

arxiv:1905.05654 v2 · 2019-05-14 · gr-qc · astro-ph.CO · 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{NIYK4XS3CPPZ5OE7V6LSH5NJ5T}

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	2026-07-05T01:49:34.682365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a30ae5e5b13df9eb89faf9723f5a9ece94f9a129fdb61e676b1db226f14a60a

Aliases

arxiv: 1905.05654 · arxiv_version: 1905.05654v2 · doi: 10.48550/arxiv.1905.05654 · pith_short_12: NIYK4XS3CPPZ · pith_short_16: NIYK4XS3CPPZ5OE7 · pith_short_8: NIYK4XS3

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/NIYK4XS3CPPZ5OE7V6LSH5NJ5T \
  | 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: 6a30ae5e5b13df9eb89faf9723f5a9ece94f9a129fdb61e676b1db226f14a60a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce23f888829c2f7a1a8c5a53ab32080d6b72af384d8f6f7124972d80030a5181",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-05-14T14:59:30Z",
    "title_canon_sha256": "58dff39bf8b3e5ea4db57d7a4df0910c2921c451025455ddee20b33c0b9438c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.05654",
    "kind": "arxiv",
    "version": 2
  }
}