Pith Number

pith:SFM3PDRA

pith:2012:SFM3PDRAZLATP5FHDLCCQMSJZB

not attested not anchored not stored refs pending

GPS test of the local position invariance of Planck's constant

James Kentosh, Makan Mohageg

arxiv:1203.0102 v1 · 2012-03-01 · 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{SFM3PDRAZLATP5FHDLCCQMSJZB}

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	2026-05-18T03:46:03.393429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9159b78e20cac137f4a71ac4283249c85f0420dcc094adb87a291facc595d6ec

Aliases

arxiv: 1203.0102 · arxiv_version: 1203.0102v1 · doi: 10.48550/arxiv.1203.0102 · pith_short_12: SFM3PDRAZLAT · pith_short_16: SFM3PDRAZLATP5FH · pith_short_8: SFM3PDRA

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/SFM3PDRAZLATP5FHDLCCQMSJZB \
  | 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: 9159b78e20cac137f4a71ac4283249c85f0420dcc094adb87a291facc595d6ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c4db419c28899b4903ce7539acfce7806dd64709713e49fee71b74284d2bf2f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-03-01T07:04:06Z",
    "title_canon_sha256": "5f3532a0529703be6c5f3c9a431e1830bf58c75a08ea0509341f913b6b93fe98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0102",
    "kind": "arxiv",
    "version": 1
  }
}