Pith Number

pith:4UUWSHIJ

pith:2002:4UUWSHIJ52C3CPTLCM3PUJUZNF

not attested not anchored not stored refs pending

Predictions and Observations in Theories with Varying Couplings

C. Armendariz-Picon

arxiv:astro-ph/0205187 v1 · 2002-05-13 · 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{4UUWSHIJ52C3CPTLCM3PUJUZNF}

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	2026-05-18T04:17:53.832827Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e529691d09ee85b13e6b1336fa2699696ea4558f82a52b2112c55ee0fc5501c0

Aliases

arxiv: astro-ph/0205187 · arxiv_version: astro-ph/0205187v1 · doi: 10.48550/arxiv.astro-ph/0205187 · pith_short_12: 4UUWSHIJ52C3 · pith_short_16: 4UUWSHIJ52C3CPTL · pith_short_8: 4UUWSHIJ

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/4UUWSHIJ52C3CPTLCM3PUJUZNF \
  | 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: e529691d09ee85b13e6b1336fa2699696ea4558f82a52b2112c55ee0fc5501c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa312a57b892dc4c1f2f119d16153af3f33582fc84638deb711b611e7cc28797",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-05-13T19:00:49Z",
    "title_canon_sha256": "5d5fec2e1d67c0157d27dac5e1a7dd54db369d94ebaa461d13fe2fc3bbbe0b38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0205187",
    "kind": "arxiv",
    "version": 1
  }
}