Pith Number

pith:LONL5FWG

pith:2021:LONL5FWG6J54DF46YMDTONOTXZ

not attested not anchored not stored refs pending

The curious case of the Buchdahl-Land-Sultana-Wyman-Iba\~nez-Sanz spacetime

Alexandre Leblanc, Sonia Jose, Valerio Faraoni

arxiv:2110.11289 v1 · 2021-10-21 · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LONL5FWG6J54DF46YMDTONOTXZ}

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	2026-07-05T03:51:34.721022Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b9abe96c6f27bc1979ec3073735d3be427cb26912ca1a7cb80f4e68ac5e84f7

Aliases

arxiv: 2110.11289 · arxiv_version: 2110.11289v1 · doi: 10.48550/arxiv.2110.11289 · pith_short_12: LONL5FWG6J54 · pith_short_16: LONL5FWG6J54DF46 · pith_short_8: LONL5FWG

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/LONL5FWG6J54DF46YMDTONOTXZ \
  | 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: 5b9abe96c6f27bc1979ec3073735d3be427cb26912ca1a7cb80f4e68ac5e84f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02ee87087cb01fe0873ae2f27320987959d27ef3754d343abf9c213055859b68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-10-21T17:17:31Z",
    "title_canon_sha256": "c3877eb5cf838b1e6a39189677e347124bfaffd2892a8a39c5151acac6b87478"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.11289",
    "kind": "arxiv",
    "version": 1
  }
}