Pith Number

pith:2FDVQP7E

pith:2003:2FDVQP7EL4VQ7AQG4IMT2MYAL7

not attested not anchored not stored refs pending

Gauge Coupling Variation in Brane Models

A. C. Davis, C. van de Bruck, G. A. Palma, Ph. Brax

arxiv:astro-ph/0306279 v2 · 2003-06-13 · astro-ph · hep-ph · hep-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{2FDVQP7EL4VQ7AQG4IMT2MYAL7}

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	2026-07-04T16:37:18.118203Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d147583fe45f2b0f8206e2193d33005fe00057fe0237b9b0f79981404ebc376c

Aliases

arxiv: astro-ph/0306279 · arxiv_version: astro-ph/0306279v2 · doi: 10.48550/arxiv.astro-ph/0306279 · pith_short_12: 2FDVQP7EL4VQ · pith_short_16: 2FDVQP7EL4VQ7AQG · pith_short_8: 2FDVQP7E

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/2FDVQP7EL4VQ7AQG4IMT2MYAL7 \
  | 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: d147583fe45f2b0f8206e2193d33005fe00057fe0237b9b0f79981404ebc376c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "721423491ab5db3b40c7624b91c57e744c0c9a41a9c2425211f2b3e0a25b29ce",
    "cross_cats_sorted": [
      "hep-ph",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-06-13T14:43:07Z",
    "title_canon_sha256": "77548ec83080de07de502bb02b419e26327ecbc4450438e3bc63a648ff2e9621"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0306279",
    "kind": "arxiv",
    "version": 2
  }
}