Pith Number

pith:GHLLHA44

pith:2002:GHLLHA44MS3SCTMJASG7KUP4MM

not attested not anchored not stored refs pending

A Cosmological Tale of Two Varying Constants

H.B. Sandvik, J.D. Barrow, J. Magueijo

arxiv:astro-ph/0204357 v1 · 2002-04-21 · astro-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GHLLHA44MS3SCTMJASG7KUP4MM}

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	2026-05-18T02:40:35.616993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31d6b3839c64b7214d89048df551fc6304c0f260dbae009ba42523c8ee857e21

Aliases

arxiv: astro-ph/0204357 · arxiv_version: astro-ph/0204357v1 · doi: 10.48550/arxiv.astro-ph/0204357 · pith_short_12: GHLLHA44MS3S · pith_short_16: GHLLHA44MS3SCTMJ · pith_short_8: GHLLHA44

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/GHLLHA44MS3SCTMJASG7KUP4MM \
  | 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: 31d6b3839c64b7214d89048df551fc6304c0f260dbae009ba42523c8ee857e21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "054f5eb5b712f83b4863031228487f7f3effd51c461b452bb5f5bb76fc54993a",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-04-21T14:26:12Z",
    "title_canon_sha256": "b8ca4a554c93d9685c8823c0e4eec0c9111a87283952e54ecb5b09c44df2d57d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0204357",
    "kind": "arxiv",
    "version": 1
  }
}