Pith Number

pith:BH6J7CAO

pith:2012:BH6J7CAO3WH4CHDEJ7CTGBTLDJ

not attested not anchored not stored refs pending

Weak gravitational lensing by compact objects in fourth order gravity

David Hobill, L\'aszl\'o \'A. Gergely, Mariafelicia De Laurentis, Salvatore Capozziello, Zsolt Horv\'ath

arxiv:1207.1823 v2 · 2012-07-07 · 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{BH6J7CAO3WH4CHDEJ7CTGBTLDJ}

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	2026-05-18T03:05:35.821391Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09fc9f880edd8fc11c644fc533066b1a681fcec4506b1ea8fbfd7d5b2378e3ae

Aliases

arxiv: 1207.1823 · arxiv_version: 1207.1823v2 · doi: 10.48550/arxiv.1207.1823 · pith_short_12: BH6J7CAO3WH4 · pith_short_16: BH6J7CAO3WH4CHDE · pith_short_8: BH6J7CAO

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/BH6J7CAO3WH4CHDEJ7CTGBTLDJ \
  | 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: 09fc9f880edd8fc11c644fc533066b1a681fcec4506b1ea8fbfd7d5b2378e3ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f95a86566582de809989b63d007f41a2fac28fc3a6f24f401351be823d3f3856",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-07-07T19:08:38Z",
    "title_canon_sha256": "9cc846e3bc7a034a1501886adc5a4f097bf5817d8a0c2caba014a3179a52ad71"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.1823",
    "kind": "arxiv",
    "version": 2
  }
}