Pith Number

pith:6B7TS2GE

pith:2012:6B7TS2GEHGDI3KZIXPBW5KIQZD

not attested not anchored not stored refs pending

Sensitivity to a possible variation of the Proton-to-Electron Mass Ratio of Torsion-Wagging-Rotation Transitions in Methylamine (CH3NH2)

Hendrick L. Bethlem, Isabelle Kleiner, MiKhail G. Kozlov, Paul Jansen, Sergei A. Levshakov, Vadim V. Ilyushin, Wim Ubachs

arxiv:1201.2090 v1 · 2012-01-10 · physics.chem-ph · astro-ph.CO · physics.atom-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6B7TS2GEHGDI3KZIXPBW5KIQZD}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:25:11.287200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f07f3968c439868dab28bbc36ea910c8d789f7dac82a4968cfc104f88262c4c3

Aliases

arxiv: 1201.2090 · arxiv_version: 1201.2090v1 · doi: 10.48550/arxiv.1201.2090 · pith_short_12: 6B7TS2GEHGDI · pith_short_16: 6B7TS2GEHGDI3KZI · pith_short_8: 6B7TS2GE

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/6B7TS2GEHGDI3KZIXPBW5KIQZD \
  | 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: f07f3968c439868dab28bbc36ea910c8d789f7dac82a4968cfc104f88262c4c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5219a87da16561946d302e142aad02f310975f9b0deb525f39138fc5e324fd23",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2012-01-10T15:44:48Z",
    "title_canon_sha256": "e3f4a3f7d29a121584ccb68349252fb185b38a8ce64a3445f8409b742d399cca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.2090",
    "kind": "arxiv",
    "version": 1
  }
}