Pith Number

pith:QTGBQAYI

pith:2012:QTGBQAYI436Y4IREMHMN6ACEU3

not attested not anchored not stored refs pending

Updated constraints on $f(\mathcal{R})$ gravity from cosmography

Alejandro Aviles, Alessandro Bravetti, Orlando Luongo, Salvatore Capozziello

arxiv:1210.5149 v2 · 2012-10-18 · 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{QTGBQAYI436Y4IREMHMN6ACEU3}

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	2026-05-18T01:53:46.550800Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84cc180308e6fd8e222461d8df0044a6ec984a4f2786541d48969bc9309099eb

Aliases

arxiv: 1210.5149 · arxiv_version: 1210.5149v2 · doi: 10.48550/arxiv.1210.5149 · pith_short_12: QTGBQAYI436Y · pith_short_16: QTGBQAYI436Y4IRE · pith_short_8: QTGBQAYI

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/QTGBQAYI436Y4IREMHMN6ACEU3 \
  | 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: 84cc180308e6fd8e222461d8df0044a6ec984a4f2786541d48969bc9309099eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bb1d63609346629604964b05265063fce9f9760cce68cdf3f2b25c53dbfa371",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-10-18T14:55:41Z",
    "title_canon_sha256": "227418ad364762dd09338edf25eafd899c476ad64617549a45bb577b618cb59a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.5149",
    "kind": "arxiv",
    "version": 2
  }
}