Pith Number

pith:PSSGTSK7

pith:2012:PSSGTSK7JGGVMUOBQVPZFHAT2X

not attested not anchored not stored refs pending

Variation of the speed of light with temperature of the expanding universe

Ant\^onio Carlos Amaro de Faria Jr, Cl\'audio Nassif Cruz (retired professor)

arxiv:1205.2298 v6 · 2012-05-10 · 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{PSSGTSK7JGGVMUOBQVPZFHAT2X}

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

Alleviating the Hubble Tension via Cosmological Time Dilation in the meVSL Model

Receipt and verification

First computed	2026-07-05T02:12:26.853823Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ca469c95f498d5651c1855f929c13d5fc3e5bcb1518ccf2b1f3444ca3a8961f

Aliases

arxiv: 1205.2298 · arxiv_version: 1205.2298v6 · doi: 10.48550/arxiv.1205.2298 · pith_short_12: PSSGTSK7JGGV · pith_short_16: PSSGTSK7JGGVMUOB · pith_short_8: PSSGTSK7

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/PSSGTSK7JGGVMUOBQVPZFHAT2X \
  | 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: 7ca469c95f498d5651c1855f929c13d5fc3e5bcb1518ccf2b1f3444ca3a8961f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e7cd44100fe9f0b69f5024dd3e55b24aa313d477686a97cf1aff5edcc3bbe9f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-05-10T15:48:45Z",
    "title_canon_sha256": "6fccfafcc4fab37480fbfa1ef5ef220d540157dc7b4b52596fabc4255dee5ba4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.2298",
    "kind": "arxiv",
    "version": 6
  }
}