Pith Number

pith:FOVQUDLH

pith:2018:FOVQUDLHJOVJM2G4AML23WOY4C

not attested not anchored not stored refs pending

Variability search in M 31 using Principal Component Analysis and the Hubble Source Catalog

A. Karampelas, A. Z. Bonanos, D. Hatzidimitriou, K. V. Sokolovsky, M. I. Moretti, M. Yang, P. Gavras

arxiv:1803.09782 v1 · 2018-03-26 · astro-ph.IM · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FOVQUDLHJOVJM2G4AML23WOY4C}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:19:20.066202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bab0a0d674baa9668dc0317add9d8e08d46eb0e020a21db8e222daa403750ff

Aliases

arxiv: 1803.09782 · arxiv_version: 1803.09782v1 · doi: 10.48550/arxiv.1803.09782 · pith_short_12: FOVQUDLHJOVJ · pith_short_16: FOVQUDLHJOVJM2G4 · pith_short_8: FOVQUDLH

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/FOVQUDLHJOVJM2G4AML23WOY4C \
  | 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: 2bab0a0d674baa9668dc0317add9d8e08d46eb0e020a21db8e222daa403750ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcf0d918e0ab8f8e0cffd52e37328dbd3c8e4cfb335c1f0c7e1258a7ffb9f065",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-03-26T18:31:59Z",
    "title_canon_sha256": "92122fdf5e73eb1f0ff7f8c1eae427881846fe041b5a550af10fa6af83469003"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.09782",
    "kind": "arxiv",
    "version": 1
  }
}