Pith Number

pith:C45G5LOE

pith:2019:C45G5LOEG5JBGRYBC5KPBKU5SF

not attested not anchored not stored refs pending

Using spatial curvature with HII galaxies and cosmic chronometers to explore the tension in $H_0$

Cheng-Zong Ruan, Fulvio Melia, Tong-Jie Zhang, Yu Chen

arxiv:1901.06626 v2 · 2019-01-20 · 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{C45G5LOEG5JBGRYBC5KPBKU5SF}

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	2026-07-04T23:59:05.894006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

173a6eadc437521347011754f0aa9d9172bd2065b6a95be55d0acc11770fe205

Aliases

arxiv: 1901.06626 · arxiv_version: 1901.06626v2 · doi: 10.48550/arxiv.1901.06626 · pith_short_12: C45G5LOEG5JB · pith_short_16: C45G5LOEG5JBGRYB · pith_short_8: C45G5LOE

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/C45G5LOEG5JBGRYBC5KPBKU5SF \
  | 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: 173a6eadc437521347011754f0aa9d9172bd2065b6a95be55d0acc11770fe205

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05672e948466dd92ec4547192711f99aebc4002722a2ac5824d514ede396924c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-01-20T06:20:41Z",
    "title_canon_sha256": "f43f38ffb9f3affa507bb9511b4d9d9ac20aae8b35bb12ee71db17fe3e85322c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.06626",
    "kind": "arxiv",
    "version": 2
  }
}