Pith Number

pith:XZTLHU3Q

pith:2014:XZTLHU3QUIAFBGS4TSNYMRZUHC

not attested not anchored not stored refs pending

On possible origin of an anisotropy in the speed of light in vacuum

E.P. Savelova

arxiv:1405.1977 v1 · 2014-05-08 · 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{XZTLHU3QUIAFBGS4TSNYMRZUHC}

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	2026-05-18T01:12:36.592540Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be66b3d370a200509a5c9c9b86473438ad67cc75a2a9a353a469f45490729285

Aliases

arxiv: 1405.1977 · arxiv_version: 1405.1977v1 · doi: 10.48550/arxiv.1405.1977 · pith_short_12: XZTLHU3QUIAF · pith_short_16: XZTLHU3QUIAFBGS4 · pith_short_8: XZTLHU3Q

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/XZTLHU3QUIAFBGS4TSNYMRZUHC \
  | 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: be66b3d370a200509a5c9c9b86473438ad67cc75a2a9a353a469f45490729285

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c39026e6c915e6728c218729207aec6461f44eb46c0c50b4260234adcf2df66d",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-05-08T15:41:35Z",
    "title_canon_sha256": "dae3f2b56b6e339d109cbd50d1623beb1cf00ba06909f4329f3486010d26d7d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.1977",
    "kind": "arxiv",
    "version": 1
  }
}