Pith Number

pith:4FWEZQMO

pith:2011:4FWEZQMOKCRFY2AFI5UZ5P3WMG

not attested not anchored not stored refs pending

Static and spherically symmetric black holes in $f(R)$ theories

Santiago Esteban Perez Bergliaffa, Yves Eduardo Chifarelli de Oliveira Nunes

arxiv:1107.5727 v1 · 2011-07-28 · 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{4FWEZQMOKCRFY2AFI5UZ5P3WMG}

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	2026-05-18T03:23:22.676393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e16c4cc18e50a25c680547699ebf76619e992ca43f99c93d9bc7ee46f7c0a610

Aliases

arxiv: 1107.5727 · arxiv_version: 1107.5727v1 · doi: 10.48550/arxiv.1107.5727 · pith_short_12: 4FWEZQMOKCRF · pith_short_16: 4FWEZQMOKCRFY2AF · pith_short_8: 4FWEZQMO

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/4FWEZQMOKCRFY2AFI5UZ5P3WMG \
  | 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: e16c4cc18e50a25c680547699ebf76619e992ca43f99c93d9bc7ee46f7c0a610

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b70b4a1ef982bc5d6fb5b2cb2e07baf2540f7cd1a27cfbd6650a6a06179210a1",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-07-28T14:44:00Z",
    "title_canon_sha256": "53502b13165e49a9e8b6ab00335831966dd5fc3532d0350e4791df395adad5e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.5727",
    "kind": "arxiv",
    "version": 1
  }
}