Pith Number

pith:XPT4KKC2

pith:2013:XPT4KKC2HELEB7RZFDBEXRF6UX

not attested not anchored not stored refs pending

Properties of M31. III: Candidate Beat Cepheids from PS1 PAndromeda Data and Their Implication on Metallicity Gradient

A. Riffeser, C. Goessl, C.-H. Lee, H. Flewelling, J. Koppenhoefer, J. L. Tonry, J. Snigula, K. C. Chambers, K. W. Hodapp, M. Kodric, N. Kaiser, P. A. Price, R. Bender, R. J. Wainscoat, R.-P. Kudritzki, S. Seitz, U. Hopp, W. S. Burgett

arxiv:1308.6576 v2 · 2013-08-29 · astro-ph.GA · 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{XPT4KKC2HELEB7RZFDBEXRF6UX}

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	2026-05-18T03:10:36.419643Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbe7c5285a391640fe3928c24bc4bea5cd759e0224b126ef91d0a4b72489a4d4

Aliases

arxiv: 1308.6576 · arxiv_version: 1308.6576v2 · doi: 10.48550/arxiv.1308.6576 · pith_short_12: XPT4KKC2HELE · pith_short_16: XPT4KKC2HELEB7RZ · pith_short_8: XPT4KKC2

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/XPT4KKC2HELEB7RZFDBEXRF6UX \
  | 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: bbe7c5285a391640fe3928c24bc4bea5cd759e0224b126ef91d0a4b72489a4d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a607c8094c9f76e9e2e280893ef15a51837790f3be14ebb5f40297aeba49faac",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-08-29T20:00:01Z",
    "title_canon_sha256": "df87ff9b046ca7e13efcbdad6942dd3264e9068b1683da348b2fa103f046d2fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.6576",
    "kind": "arxiv",
    "version": 2
  }
}