Pith Number

pith:VR42YUMT

pith:2023:VR42YUMTULZ7QUTQW4AL77FE4K

not attested not anchored not stored refs pending

A Non-parametric Reconstruction of the Hubble Parameter $H(z)$ Based on Radial Basis Function Neural Networks

Bo Yu, Hong-Feng Wang, Jian-Chen Zhang, Kang Jiao, Li-Li Zhao, Tong-Jie Zhang, Yuan-Bo Xie, Yu Hu

arxiv:2311.13938 v2 · 2023-11-23 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VR42YUMTULZ7QUTQW4AL77FE4K}

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	2026-07-05T07:36:04.715979Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac79ac5193a2f3f85270b700bffca4e2aefcc6d7e835df837f3ddd01d780e849

Aliases

arxiv: 2311.13938 · arxiv_version: 2311.13938v2 · doi: 10.48550/arxiv.2311.13938 · pith_short_12: VR42YUMTULZ7 · pith_short_16: VR42YUMTULZ7QUTQ · pith_short_8: VR42YUMT

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/VR42YUMTULZ7QUTQW4AL77FE4K \
  | 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: ac79ac5193a2f3f85270b700bffca4e2aefcc6d7e835df837f3ddd01d780e849

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfc813d3feb2b5ffa81b799947091ee3545ed1c5d9564c20a0fedd501a9a7c0b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2023-11-23T11:41:32Z",
    "title_canon_sha256": "385aa27175043c5a2fcf4ae36dd95f0ad261e363db52d2e548e8212e25842b03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2311.13938",
    "kind": "arxiv",
    "version": 2
  }
}