Pith Number

pith:KJ3JX7LK

pith:2021:KJ3JX7LKELRP5HE7SHDJCZJJJX

not attested not anchored not stored refs pending

A search for the variation of speed of light using galaxy cluster gas mass fraction measurements

I. E. C. R. Mendon\c{c}a, Kamal Bora, R. F. L. Holanda, Shantanu Desai, S. H. Pereira

arxiv:2109.14512 v3 · 2021-09-29 · astro-ph.CO · 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{KJ3JX7LKELRP5HE7SHDJCZJJJX}

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 the Constancy of the Speed of Light: Galaxy Cluster Mass Bias Implications

Receipt and verification

First computed	2026-07-05T03:32:54.787658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52769bfd6a22e2fe9c9f91c69165294dc275412f9363eaee1d4491f867845dcb

Aliases

arxiv: 2109.14512 · arxiv_version: 2109.14512v3 · doi: 10.48550/arxiv.2109.14512 · pith_short_12: KJ3JX7LKELRP · pith_short_16: KJ3JX7LKELRP5HE7 · pith_short_8: KJ3JX7LK

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/KJ3JX7LKELRP5HE7SHDJCZJJJX \
  | 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: 52769bfd6a22e2fe9c9f91c69165294dc275412f9363eaee1d4491f867845dcb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60e92234ffeceefd35affbb1f19e84e4289dc115ad3fb930d329ad5a63b37c72",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-09-29T15:50:33Z",
    "title_canon_sha256": "960881ebaa725b56f6327646d609b2cdd41ce90185e865739b161abe29b0280c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.14512",
    "kind": "arxiv",
    "version": 3
  }
}