Pith Number

pith:6URTNLXG

pith:2026:6URTNLXGWSJOVJRBAAPU7PBDZO

not attested not anchored not stored refs pending

Distance-Ladder Measurements of the Hubble Constant: Recent Progress, Systematics, and Prospects

Shu Wang, Xiaodian Chen

arxiv:2606.26831 v1 · 2026-06-25 · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6URTNLXGWSJOVJRBAAPU7PBDZO}

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	2026-06-26T01:16:01.096721Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f52336aee6b492eaa621001f4fbc23cb8e2a78462a9af65a442082c393b99ac2

Aliases

arxiv: 2606.26831 · arxiv_version: 2606.26831v1 · doi: 10.48550/arxiv.2606.26831 · pith_short_12: 6URTNLXGWSJO · pith_short_16: 6URTNLXGWSJOVJRB · pith_short_8: 6URTNLXG

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/6URTNLXGWSJOVJRBAAPU7PBDZO \
  | 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: f52336aee6b492eaa621001f4fbc23cb8e2a78462a9af65a442082c393b99ac2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b41ce28649c9ef1e6222f0f191ec7968bb4b8772b577e9eadd2de027ff1f586",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-06-25T10:12:15Z",
    "title_canon_sha256": "70cf2bf478427941cead5ca25e3bef16d230c2a94f97f91ce9893e0db347b048"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.26831",
    "kind": "arxiv",
    "version": 1
  }
}