Pith Number

pith:36K4M5ZL

pith:1999:36K4M5ZL5LXSNPSJZ4EPGJBLHB

not attested not anchored not stored refs pending

Proposed astrophysical test of Lorentz invariance

C.S. Carvalho, O. Bertolami

arxiv:gr-qc/9912117 v2 · 1999-12-29 · gr-qc · astro-ph · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{36K4M5ZL5LXSNPSJZ4EPGJBLHB}

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.

Cited by

1 paper in Pith

Revisiting Varying Speed of Light in Cosmology: Insights from the Friedmann-Lema\^itre-Robertson-Walker Metric

Receipt and verification

First computed	2026-07-04T15:23:04.587860Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df95c6772beaef26be49cf08f3242b38454eeb315dc28d96c1d8e4d39f7b2449

Aliases

arxiv: gr-qc/9912117 · arxiv_version: gr-qc/9912117v2 · doi: 10.48550/arxiv.gr-qc/9912117 · pith_short_12: 36K4M5ZL5LXS · pith_short_16: 36K4M5ZL5LXSNPSJ · pith_short_8: 36K4M5ZL

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/36K4M5ZL5LXSNPSJZ4EPGJBLHB \
  | 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: df95c6772beaef26be49cf08f3242b38454eeb315dc28d96c1d8e4d39f7b2449

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3af20a1880e9a5d12f80a10ec854f61b3d9a40b6945bf14e42730777b7dd4d1c",
    "cross_cats_sorted": [
      "astro-ph",
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1999-12-29T15:02:43Z",
    "title_canon_sha256": "42f0338f9895786ffee2f355b0ea3946a8d5a93b5411caf07497d0f3f7149fa0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9912117",
    "kind": "arxiv",
    "version": 2
  }
}