Pith Number

pith:M2MAW73K

pith:2011:M2MAW73KU7NIDTXPHEPIT3JW4M

not attested not anchored not stored refs pending

Search for variation of fundamental constants and violations of fundamental symmetries using isotope comparisons

E. M. Kava, J. C. Berengut, V. V. Flambaum

arxiv:1109.1893 v1 · 2011-09-09 · physics.atom-ph · nucl-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{M2MAW73KU7NIDTXPHEPIT3JW4M}

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	2026-05-18T04:10:36.918438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66980b7f6aa7da81ceef391e89ed36e316f71603d2c34d52cab5269bf033201b

Aliases

arxiv: 1109.1893 · arxiv_version: 1109.1893v1 · doi: 10.48550/arxiv.1109.1893 · pith_short_12: M2MAW73KU7NI · pith_short_16: M2MAW73KU7NIDTXP · pith_short_8: M2MAW73K

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/M2MAW73KU7NIDTXPHEPIT3JW4M \
  | 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: 66980b7f6aa7da81ceef391e89ed36e316f71603d2c34d52cab5269bf033201b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a048181c94f948e712faeeef135f787ee3284e376d5e446768167133f52e5ba8",
    "cross_cats_sorted": [
      "nucl-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2011-09-09T04:46:25Z",
    "title_canon_sha256": "a22cd6747ecd40e90a616fc73763ec733479a3d10790fddbe13f3c3134f50089"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1893",
    "kind": "arxiv",
    "version": 1
  }
}