Pith Number

pith:AEKJ2CYQ

pith:2014:AEKJ2CYQOAD33LAHXHTOWJ5FLE

not attested not anchored not stored refs pending

Constraints on the exponential $f(R)$ model from latest Hubble parameter measurements

Chao-Qiang Geng, Chung-Chi Lee, Ling-Wei Luo, Yun Chen, Zong-Hong Zhu

arxiv:1407.4303 v2 · 2014-07-16 · 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{AEKJ2CYQOAD33LAHXHTOWJ5FLE}

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	2026-05-18T02:25:47.115179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01149d0b107007bdac07b9e6eb27a559315be2c6b7121566ee4c20be06bff0ff

Aliases

arxiv: 1407.4303 · arxiv_version: 1407.4303v2 · doi: 10.48550/arxiv.1407.4303 · pith_short_12: AEKJ2CYQOAD3 · pith_short_16: AEKJ2CYQOAD33LAH · pith_short_8: AEKJ2CYQ

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/AEKJ2CYQOAD33LAHXHTOWJ5FLE \
  | 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: 01149d0b107007bdac07b9e6eb27a559315be2c6b7121566ee4c20be06bff0ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a140de82d09dbdf8630043ca84f40f4fd535c930cb876d9570883d5a78e54c7b",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-07-16T13:28:38Z",
    "title_canon_sha256": "7eb2707c5c83b4dd5198b50f838282f1b296a803efa204973b97294924cd904d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.4303",
    "kind": "arxiv",
    "version": 2
  }
}