Pith Number

pith:6STFN4LX

pith:2012:6STFN4LXUL7ZD4T53ZOCK6CSHI

not attested not anchored not stored refs pending

Estimations of the cosmological parameters from the observational variation of the fine structure constant

Tong-Jie Zhang, Xian-Ming Liu, Zhi-Song Zhang, Zhong-Xu Zhai

arxiv:1207.2926 v2 · 2012-07-12 · astro-ph.CO · gr-qc · hep-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{6STFN4LXUL7ZD4T53ZOCK6CSHI}

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	2026-05-18T01:56:24.460014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f4a656f177a2ff91f27dde5c2578523a09cd3a25ea83c767131d1c6dfa84f8d5

Aliases

arxiv: 1207.2926 · arxiv_version: 1207.2926v2 · doi: 10.48550/arxiv.1207.2926 · pith_short_12: 6STFN4LXUL7Z · pith_short_16: 6STFN4LXUL7ZD4T5 · pith_short_8: 6STFN4LX

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/6STFN4LXUL7ZD4T53ZOCK6CSHI \
  | 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: f4a656f177a2ff91f27dde5c2578523a09cd3a25ea83c767131d1c6dfa84f8d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab874147bc64739da4bff46e32ff7decc2831808025a46bd1553dbc1a572b233",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-07-12T11:27:35Z",
    "title_canon_sha256": "f08b55e58dcc1f4877dfee1d66275d683287b3de425b3b178a24824f4d7f8e00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2926",
    "kind": "arxiv",
    "version": 2
  }
}