Pith Number

pith:WI2RO3CM

pith:2008:WI2RO3CMLPDTXT6GZ5O43JCMGM

not attested not anchored not stored refs pending

The Fundamental Constants in Physics and their Time Dependence

Harald Fritzsch

arxiv:0802.0099 v2 · 2008-02-01 · hep-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{WI2RO3CMLPDTXT6GZ5O43JCMGM}

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	2026-05-18T01:01:34.896544Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b235176c4c5bc73bcfc6cf5dcda44c333eddbb3e4a35269234ec6182e1e39c06

Aliases

arxiv: 0802.0099 · arxiv_version: 0802.0099v2 · doi: 10.48550/arxiv.0802.0099 · pith_short_12: WI2RO3CMLPDT · pith_short_16: WI2RO3CMLPDTXT6G · pith_short_8: WI2RO3CM

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/WI2RO3CMLPDTXT6GZ5O43JCMGM \
  | 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: b235176c4c5bc73bcfc6cf5dcda44c333eddbb3e4a35269234ec6182e1e39c06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30a64bc60f58911d5b9eee5751d737a6b2d3288bdf43d7faae9370b38f279257",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-ph",
    "submitted_at": "2008-02-01T11:12:32Z",
    "title_canon_sha256": "fc912b1e1149c8a971a23f6c647a5d6c82d58dc6ad5530de4a9da7d63a6e51b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.0099",
    "kind": "arxiv",
    "version": 2
  }
}