Pith Number

pith:3H6LC5W3

pith:2024:3H6LC5W33OKQ5ZVYX4AAMWUVPH

not attested not anchored not stored refs pending

Unsupervised Machine Learning for the Classification of Astrophysical X-ray Sources

Alexander Caicedo, Juan Rafael Mart\'inez-Galarza, Raffaele D'Abrusco, V\'ictor Samuel P\'erez-D\'iaz

arxiv:2401.12203 v1 · 2024-01-22 · astro-ph.IM · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3H6LC5W33OKQ5ZVYX4AAMWUVPH}

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	2026-07-05T07:38:34.699816Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9fcb176dbdb950ee6b8bf00065a9579fe1a28f5cc91c17596054a8b534bee70

Aliases

arxiv: 2401.12203 · arxiv_version: 2401.12203v1 · doi: 10.48550/arxiv.2401.12203 · pith_short_12: 3H6LC5W33OKQ · pith_short_16: 3H6LC5W33OKQ5ZVY · pith_short_8: 3H6LC5W3

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/3H6LC5W33OKQ5ZVYX4AAMWUVPH \
  | 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: d9fcb176dbdb950ee6b8bf00065a9579fe1a28f5cc91c17596054a8b534bee70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe2a2898ca85cf548850eb4ccb599c992b08278fb0ede62242d7fea7ac2eb990",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2024-01-22T18:42:31Z",
    "title_canon_sha256": "9bf2d4e649a4585c7eeca3e4382a704cf7f3892cc7a8f5954107928c1b6c2e99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2401.12203",
    "kind": "arxiv",
    "version": 1
  }
}