Pith Number

pith:CYMCK5NF

pith:2018:CYMCK5NF3SV6BDJ4JXGRD7LPOM

not attested not anchored not stored refs pending

Spacetime and dark matter from spontaneous breaking of Lorentz symmetry

Federico Urban, Luca Marzola, Tomi Koivisto, Tom Z{\l}o\'snik

arxiv:1807.01100 v2 · 2018-07-03 · gr-qc · astro-ph.CO · 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{CYMCK5NF3SV6BDJ4JXGRD7LPOM}

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	2026-05-18T00:02:09.599187Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16182575a5dcabe08d3c4dcd11fd6f730ba17525e5a95c4af0d43a979491d428

Aliases

arxiv: 1807.01100 · arxiv_version: 1807.01100v2 · doi: 10.48550/arxiv.1807.01100 · pith_short_12: CYMCK5NF3SV6 · pith_short_16: CYMCK5NF3SV6BDJ4 · pith_short_8: CYMCK5NF

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/CYMCK5NF3SV6BDJ4JXGRD7LPOM \
  | 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: 16182575a5dcabe08d3c4dcd11fd6f730ba17525e5a95c4af0d43a979491d428

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c28f9788828584349edb1724036d5c2f323c3b7b6fb96b0021274efdab1669e5",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-07-03T11:56:36Z",
    "title_canon_sha256": "55c7efd63bfd2ad3f919fea99cb33a9ebded10f3d06a9d2ed23c0bdc4666a6a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01100",
    "kind": "arxiv",
    "version": 2
  }
}