Pith Number

pith:WRN3OW2V

pith:2025:WRN3OW2VAJR3JGLVULQ4CMHSXM

not attested not anchored not stored refs pending

Two per cent measurement of $H_0$ from Cepheids alone

Alan Heavens, Eleni Tsaprazi, Guilhem Lavaux, Harry Desmond, Jens Jasche, Richard Stiskalek, Stuart McAlpine

arxiv:2509.09665 v3 · 2025-09-11 · 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{WRN3OW2VAJR3JGLVULQ4CMHSXM}

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.

Cited by

2 papers in Pith

HALO II: Constraining Hubble constant $H_{0}$ through continuum delay fitting of Fairall 9

Nonlinear Matter Power Spectrum from relativistic $N$-body Simulations: $\Lambda_{\rm s}$CDM versus $\Lambda$CDM

Receipt and verification

First computed	2026-06-11T01:09:16.807651Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b45bb75b550263b49975a2e1c130f2bb2db80fd38783327f92cc689d0f267d10

Aliases

arxiv: 2509.09665 · arxiv_version: 2509.09665v3 · doi: 10.48550/arxiv.2509.09665 · pith_short_12: WRN3OW2VAJR3 · pith_short_16: WRN3OW2VAJR3JGLV · pith_short_8: WRN3OW2V

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/WRN3OW2VAJR3JGLVULQ4CMHSXM \
  | 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: b45bb75b550263b49975a2e1c130f2bb2db80fd38783327f92cc689d0f267d10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f738c13094a79359cfec3a4f6259549620f90df3c55d71fe0f64dc72e705e8db",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2025-09-11T17:57:56Z",
    "title_canon_sha256": "adeae8bfc3803bded88d56aea244c0400248f1c3d23f908337fbd65c09efe5ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.09665",
    "kind": "arxiv",
    "version": 3
  }
}