Pith Number

pith:SBO2Q42V

pith:2015:SBO2Q42VFHW64BQUWJKL35KFFF

not attested not anchored not stored refs pending

On the Impact of Cepheid Outliers on the Distance Ladder

E. Rozo, E. S. Rykoff, H. Desmond, M. R. Becker, P. Marshall

arxiv:1507.07523 v2 · 2015-07-27 · 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{SBO2Q42VFHW64BQUWJKL35KFFF}

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	2026-05-18T01:36:07.856453Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

905da8735529edee0614b254bdf54529748ccd0d7c9a9c94f431a6a424547fc3

Aliases

arxiv: 1507.07523 · arxiv_version: 1507.07523v2 · doi: 10.48550/arxiv.1507.07523 · pith_short_12: SBO2Q42VFHW6 · pith_short_16: SBO2Q42VFHW64BQU · pith_short_8: SBO2Q42V

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/SBO2Q42VFHW64BQUWJKL35KFFF \
  | 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: 905da8735529edee0614b254bdf54529748ccd0d7c9a9c94f431a6a424547fc3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "801da2911bd42dd284a2a029bb908a2190838309c349a3a161657746b8d55873",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-07-27T18:49:28Z",
    "title_canon_sha256": "42f03b8c45f8013b6a7897056d6f3ec0bd956868f87fb1fe88167c2f4a8e5d51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07523",
    "kind": "arxiv",
    "version": 2
  }
}