Pith Number

pith:WQZ3VNOP

pith:2013:WQZ3VNOPW3SS7GPPBL6TNHHC4I

not attested not anchored not stored refs pending

Constraints on the Tensor-to-Scalar ratio for non-power-law models

J.Alberto Vazquez, M. Bridges, M.P. Hobson, Yin-Zhe Ma

arxiv:1303.4014 v2 · 2013-03-16 · astro-ph.CO · 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{WQZ3VNOPW3SS7GPPBL6TNHHC4I}

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	2026-05-18T01:51:01.542798Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b433bab5cfb6e52f99ef0afd369ce2e22809fb3c77531c11ad3a853ad65c03e9

Aliases

arxiv: 1303.4014 · arxiv_version: 1303.4014v2 · doi: 10.48550/arxiv.1303.4014 · pith_short_12: WQZ3VNOPW3SS · pith_short_16: WQZ3VNOPW3SS7GPP · pith_short_8: WQZ3VNOP

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/WQZ3VNOPW3SS7GPPBL6TNHHC4I \
  | 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: b433bab5cfb6e52f99ef0afd369ce2e22809fb3c77531c11ad3a853ad65c03e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd2ef5ca31487240b385e91be4f681670683511a07c8a0a0191f78924c02e6d4",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-03-16T19:41:19Z",
    "title_canon_sha256": "879a2794347e25ea9dc70076f2dd4c8b16c524ae4da6e2d2ca3b9bfdbb657ab8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.4014",
    "kind": "arxiv",
    "version": 2
  }
}