Pith Number

pith:WKKKZ6CR

pith:2025:WKKKZ6CRBH2DT56DAKHHCJYYQY

not attested not anchored not stored refs pending

Blue supergiants in the Pinwheel Galaxy M101: comparison with H II region chemical abundances, spectroscopic distance and an independent determination of the Hubble constant

Adam G. Riess, Eva Sextl, Fabio Bresolin, Miguel A. Urbaneja, Rolf-Peter Kudritzki

arxiv:2508.11837 v1 · 2025-08-15 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WKKKZ6CRBH2DT56DAKHHCJYYQY}

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

1 paper in Pith

Cepheid metallicities from low-resolution near-infrared spectra: validation against the optical reference scale

Receipt and verification

First computed	2026-07-05T11:54:55.553523Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b294acf85109f439f7c3028e712718862e667d0d6e879a68e0e3b5d327328ec1

Aliases

arxiv: 2508.11837 · arxiv_version: 2508.11837v1 · doi: 10.48550/arxiv.2508.11837 · pith_short_12: WKKKZ6CRBH2D · pith_short_16: WKKKZ6CRBH2DT56D · pith_short_8: WKKKZ6CR

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/WKKKZ6CRBH2DT56DAKHHCJYYQY \
  | 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: b294acf85109f439f7c3028e712718862e667d0d6e879a68e0e3b5d327328ec1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57b00b3072ca9e5a21a7b68b370f2d760fb639fbada557311cb6cc659d504606",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-08-15T23:13:02Z",
    "title_canon_sha256": "f832ba7c5e0990ba2047c61c7c677794e68fcd8366060a357f423780116ebaca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.11837",
    "kind": "arxiv",
    "version": 1
  }
}