Pith Number

pith:QDEJVFFH

pith:2020:QDEJVFFH65K5DEFMM6DRBYCLLX

not attested not anchored not stored refs pending

Tracing the cosmic history by Gauss-Bonnet gravity

Ivan de Martino, Mariafelicia De Laurentis, Salvatore Capozziello

arxiv:2008.09856 v1 · 2020-08-22 · 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{QDEJVFFH65K5DEFMM6DRBYCLLX}

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	2026-07-05T01:35:37.847454Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80c89a94a7f755d190ac678710e04b5df0fb4e408b2a93b850b82cc21c8fde48

Aliases

arxiv: 2008.09856 · arxiv_version: 2008.09856v1 · doi: 10.48550/arxiv.2008.09856 · pith_short_12: QDEJVFFH65K5 · pith_short_16: QDEJVFFH65K5DEFM · pith_short_8: QDEJVFFH

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/QDEJVFFH65K5DEFMM6DRBYCLLX \
  | 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: 80c89a94a7f755d190ac678710e04b5df0fb4e408b2a93b850b82cc21c8fde48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccd0d8ff903207f3f6c92f228278ac023398b5cbaafb0825e1d907672421fd7a",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-08-22T15:29:18Z",
    "title_canon_sha256": "71dcd859c4b24857be5535bbfe3d49342d82db35c8d243c3414b27a22994321b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.09856",
    "kind": "arxiv",
    "version": 1
  }
}