Pith Number

pith:RZ2POIQD

pith:2007:RZ2POIQDKTGUYOC2CT4ZFDBICW

not attested not anchored not stored refs pending

Fundamental Constants

Frank Wilczek

arxiv:0708.4361 v1 · 2007-08-31 · hep-ph · gr-qc · hep-th · physics.gen-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{RZ2POIQDKTGUYOC2CT4ZFDBICW}

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.

Cited by

1 paper in Pith

The structure of the new SI

Receipt and verification

First computed	2026-07-04T15:03:57.037387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e74f7220354cd4c385a14f9928c2815826d79ed02c8e2bb12cc207dfb036967

Aliases

arxiv: 0708.4361 · arxiv_version: 0708.4361v1 · doi: 10.48550/arxiv.0708.4361 · pith_short_12: RZ2POIQDKTGU · pith_short_16: RZ2POIQDKTGUYOC2 · pith_short_8: RZ2POIQD

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/RZ2POIQDKTGUYOC2CT4ZFDBICW \
  | 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: 8e74f7220354cd4c385a14f9928c2815826d79ed02c8e2bb12cc207dfb036967

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "218c3f5da4fed2f555ab6931bbda23cc2f93ac7090847276b9958748ee110a6c",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th",
      "physics.gen-ph"
    ],
    "license": "",
    "primary_cat": "hep-ph",
    "submitted_at": "2007-08-31T14:52:19Z",
    "title_canon_sha256": "ab1a6d72c760e96bc29bb143c918b9919375c8c93f62a30e618d58793a359e98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.4361",
    "kind": "arxiv",
    "version": 1
  }
}