Pith Number

pith:EN2KSNLL

pith:2002:EN2KSNLLSFN57VKUHG2MH725L5

not attested not anchored not stored refs pending

Constraints on the Variations of the Fundamental Couplings

Alain Coc, Elisabeth Vangioni-Flam, Keith A. Olive, Maxim Pospelov, Michel Casse, Yong-Zhong Qian

arxiv:hep-ph/0205269 v1 · 2002-05-23 · hep-ph · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EN2KSNLLSFN57VKUHG2MH725L5}

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	2026-07-04T15:49:37.271883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2374a9356b915bdfd55439b4c3ff5d5f6b2fb4da6e90fbbee40e2e8a055c62c8

Aliases

arxiv: hep-ph/0205269 · arxiv_version: hep-ph/0205269v1 · doi: 10.48550/arxiv.hep-ph/0205269 · pith_short_12: EN2KSNLLSFN5 · pith_short_16: EN2KSNLLSFN57VKU · pith_short_8: EN2KSNLL

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/EN2KSNLLSFN57VKUHG2MH725L5 \
  | 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: 2374a9356b915bdfd55439b4c3ff5d5f6b2fb4da6e90fbbee40e2e8a055c62c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "276513b0c8499874ba02d3249e76474bb5de36c01d9b7b5ea404b18fc0990ac9",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "",
    "primary_cat": "hep-ph",
    "submitted_at": "2002-05-23T20:31:39Z",
    "title_canon_sha256": "f9ecb100b209da739fb2c901e5f874a92894046907818441516bc94bca0c4b7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-ph/0205269",
    "kind": "arxiv",
    "version": 1
  }
}