Pith Number

pith:KEPYYDV4

pith:2015:KEPYYDV4CPKQRMSMHLIIMQZPRC

not attested not anchored not stored refs pending

On the Quantization of the Charge-Mass Ratio

S.C. Ulhoa

arxiv:1512.03095 v1 · 2015-12-05 · 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{KEPYYDV4CPKQRMSMHLIIMQZPRC}

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	2026-05-18T00:56:06.506630Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

511f8c0ebc13d508b24c3ad086432f889adbf8b234058c16c036b49602039840

Aliases

arxiv: 1512.03095 · arxiv_version: 1512.03095v1 · doi: 10.48550/arxiv.1512.03095 · pith_short_12: KEPYYDV4CPKQ · pith_short_16: KEPYYDV4CPKQRMSM · pith_short_8: KEPYYDV4

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/KEPYYDV4CPKQRMSMHLIIMQZPRC \
  | 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: 511f8c0ebc13d508b24c3ad086432f889adbf8b234058c16c036b49602039840

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e949cd62fcfba7b8df251e83f4d59df93d6cff47e73c15de3a1e7fa322627888",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-12-05T23:19:29Z",
    "title_canon_sha256": "5b71dbdd235f0a1d849090c643dbe988cd299f1df493ee1992b0bd04b444a9eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.03095",
    "kind": "arxiv",
    "version": 1
  }
}