Pith Number

pith:CPYCOYSD

pith:2012:CPYCOYSDW6QOCLR2I3CM47KD5J

not attested not anchored not stored refs pending

Primordial power spectrum versus extension parameters beyond the standard model

Yuan-Zhong Zhang, Zong-Kuan Guo

arxiv:1201.1538 v2 · 2012-01-07 · astro-ph.CO · gr-qc · 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{CPYCOYSDW6QOCLR2I3CM47KD5J}

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	2026-05-18T03:55:24.645757Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13f0276243b7a0e12e3a46c4ce7d43ea7369b4d2d181314803b1ed3032b39a87

Aliases

arxiv: 1201.1538 · arxiv_version: 1201.1538v2 · doi: 10.48550/arxiv.1201.1538 · pith_short_12: CPYCOYSDW6QO · pith_short_16: CPYCOYSDW6QOCLR2 · pith_short_8: CPYCOYSD

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/CPYCOYSDW6QOCLR2I3CM47KD5J \
  | 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: 13f0276243b7a0e12e3a46c4ce7d43ea7369b4d2d181314803b1ed3032b39a87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e86c3950e3685327d160b7e9cf66ed1b3f7a653bb402bf79f2302378a83b9d85",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-01-07T09:25:29Z",
    "title_canon_sha256": "96ca693b186c142d99edd86829ec97fac42ca4112f6bb525e38d1d1e86694e40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1538",
    "kind": "arxiv",
    "version": 2
  }
}