Pith Number

pith:CB2M3CGV

pith:2013:CB2M3CGV7HLYKCQLJUPTDLFXCT

not attested not anchored not stored refs pending

Extended Gravity: State of the Art and Perspectives

Mariafelicia De Laurentis, Salvatore Capozziello

arxiv:1307.4523 v1 · 2013-07-17 · 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{CB2M3CGV7HLYKCQLJUPTDLFXCT}

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	2026-05-18T03:18:17.720324Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1074cd88d5f9d7850a0b4d1f31acb714f56e3f1edc4a908b3ca564c7c1353ae3

Aliases

arxiv: 1307.4523 · arxiv_version: 1307.4523v1 · doi: 10.48550/arxiv.1307.4523 · pith_short_12: CB2M3CGV7HLY · pith_short_16: CB2M3CGV7HLYKCQL · pith_short_8: CB2M3CGV

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/CB2M3CGV7HLYKCQLJUPTDLFXCT \
  | 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: 1074cd88d5f9d7850a0b4d1f31acb714f56e3f1edc4a908b3ca564c7c1353ae3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c071a8ac0623764ca68fe12ec1ca1e291d166924706a8e59fb488e802b14d38a",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-07-17T07:44:41Z",
    "title_canon_sha256": "2380af8c36a65835e47a581166e1bda24a2f6b2d2eb9c7f69695fe0d26e1a2c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.4523",
    "kind": "arxiv",
    "version": 1
  }
}