Pith Number

pith:X3OVX4F6

pith:2018:X3OVX4F6XODOTOZND7UIBFLOHF

not attested not anchored not stored refs pending

Almost universal spacetimes in higher-order gravity theories

Alena Pravdov\'a, Martin Kuchynka, Tom\'a\v{s} M\'alek, Vojt\v{e}ch Pravda

arxiv:1810.02178 v2 · 2018-10-04 · gr-qc · 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{X3OVX4F6XODOTOZND7UIBFLOHF}

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	2026-05-17T23:54:53.671011Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bedd5bf0bebb86e9bb2d1fe880956e396c4f8cf09ca94c1cb268741e729b3f7a

Aliases

arxiv: 1810.02178 · arxiv_version: 1810.02178v2 · doi: 10.48550/arxiv.1810.02178 · pith_short_12: X3OVX4F6XODO · pith_short_16: X3OVX4F6XODOTOZN · pith_short_8: X3OVX4F6

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/X3OVX4F6XODOTOZND7UIBFLOHF \
  | 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: bedd5bf0bebb86e9bb2d1fe880956e396c4f8cf09ca94c1cb268741e729b3f7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5efb4fcf661409a10c332ec17adf531dda64e02753020abbbc606f920f9c22a",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-10-04T12:51:55Z",
    "title_canon_sha256": "4905e118e03dc4a85a0549476fededf64f1cc980bb3ea41b3c6cb87011a9981b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.02178",
    "kind": "arxiv",
    "version": 2
  }
}