Pith Number

pith:DEPPMUIK

pith:2010:DEPPMUIKQSG7FHDVSBAW3FBMAX

not attested not anchored not stored refs pending

Space-time variation of the electron-to-proton mass ratio in a Weyl model

Daniel Sudarsky, Florencia A. Teppa Pannia, Susana J. Landau, Yuri Bonder

arxiv:1010.6233 v4 · 2010-10-29 · astro-ph.CO · gr-qc · hep-ph · 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{DEPPMUIKQSG7FHDVSBAW3FBMAX}

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	2026-05-18T02:04:54.895883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

191ef6510a848df29c7590416d942c05d1c5d14fe7d0161c0270eff818ce7224

Aliases

arxiv: 1010.6233 · arxiv_version: 1010.6233v4 · doi: 10.48550/arxiv.1010.6233 · pith_short_12: DEPPMUIKQSG7 · pith_short_16: DEPPMUIKQSG7FHDV · pith_short_8: DEPPMUIK

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/DEPPMUIKQSG7FHDVSBAW3FBMAX \
  | 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: 191ef6510a848df29c7590416d942c05d1c5d14fe7d0161c0270eff818ce7224

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f574b97cb4fbc53e39602f7f7c2cf69d2e382a3aea72c3650aff35784565d017",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-10-29T14:47:49Z",
    "title_canon_sha256": "4a6f8452a725444d29f2f3d13f1bf857da2dcc564d8e7d9bf08a8f76cec1ffcb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.6233",
    "kind": "arxiv",
    "version": 4
  }
}