Pith Number

pith:7Z32QW2K

pith:2002:7Z32QW2KNJFFRIALPYAAFPMDA6

not attested not anchored not stored refs pending

Experimental Consequences of Time Variations of the Fundamental Constants

James Rich

arxiv:physics/0209016 v1 · 2002-09-04 · physics.class-ph · astro-ph · hep-ph · 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{7Z32QW2KNJFFRIALPYAAFPMDA6}

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	2026-05-18T01:05:14.709249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe77a85b4a6a4a58a00b7e0002bd83079a37c01216fd104a6daf97caacfe47fd

Aliases

arxiv: physics/0209016 · arxiv_version: physics/0209016v1 · doi: 10.48550/arxiv.physics/0209016 · pith_short_12: 7Z32QW2KNJFF · pith_short_16: 7Z32QW2KNJFFRIAL · pith_short_8: 7Z32QW2K

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/7Z32QW2KNJFFRIALPYAAFPMDA6 \
  | 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: fe77a85b4a6a4a58a00b7e0002bd83079a37c01216fd104a6daf97caacfe47fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c4f6015f88e01e7c9fb75f880721a3b0984b99a018ae6afaa7914833b4c03cf",
    "cross_cats_sorted": [
      "astro-ph",
      "hep-ph",
      "physics.gen-ph"
    ],
    "license": "",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2002-09-04T07:59:26Z",
    "title_canon_sha256": "06b045a18b4c2cbd3870826d1f86dd17da41d771c7e5209039a3653cd8131125"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0209016",
    "kind": "arxiv",
    "version": 1
  }
}