Pith Number

pith:RK2WSBDW

pith:2015:RK2WSBDW3YTWKNCS4DFPD5GGIW

not attested not anchored not stored refs pending

Parallax of Galactic Cepheids from Spatially Scanning the Wide Field Camera 3 on the Hubble Space Telescope: The Case of SS Canis Majoris

Adam G. Riess, Alexei V. Filippenko, Aviv R. Cukierman, Brad E. Tucker, Carl Melis, Gautam Upadhya, Jay Anderson, J. Bradley Bowers, John W. MacKenty, Kelsey I. Clubb, Melissa L. Graham, Richard I. Anderson, Stefano Casertano

arxiv:1512.09371 v2 · 2015-12-29 · astro-ph.SR · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RK2WSBDW3YTWKNCS4DFPD5GGIW}

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	2026-05-18T01:11:31.819104Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ab5690476de27653452e0caf1f4c645829c6bb39cbf47f9ee0cffc1e60be147

Aliases

arxiv: 1512.09371 · arxiv_version: 1512.09371v2 · doi: 10.48550/arxiv.1512.09371 · pith_short_12: RK2WSBDW3YTW · pith_short_16: RK2WSBDW3YTWKNCS · pith_short_8: RK2WSBDW

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/RK2WSBDW3YTWKNCS4DFPD5GGIW \
  | 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: 8ab5690476de27653452e0caf1f4c645829c6bb39cbf47f9ee0cffc1e60be147

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a390837f78c7e6de3e5c4d006cd948d5880936ac3c772c75dd9fbf62f68c3b1",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-12-29T21:33:59Z",
    "title_canon_sha256": "a68456bb9aab331d20cbff750381f252f47adf53229f1e8e9622c9845d8d11e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.09371",
    "kind": "arxiv",
    "version": 2
  }
}