Pith Number

pith:A3KZ4WUR

pith:2021:A3KZ4WUR3I6ODTHUREQ6IQOY4P

not attested not anchored not stored refs pending

Image feature extraction and galaxy classification: a novel and efficient approach with automated machine learning

(2) Modulos AG, (3) Department of Astronomy, 8005 Z\"urich, Astrophysics, C. Bruderer (2), CH-1290 Versoix, CH-8093 Z\"urich, ch. d' \'Ecogia 16, ETH Z\"urich, F. Tarsitano (1), K. Schawinski (2), Switzerland, Switzerland), Technoparkstrasse 1, University of Geneva, W. G. Hartley (3) ((1) Institute for Particle Physics, Wolfgang-Pauli-Strasse 27

arxiv:2105.01070 v1 · 2021-05-03 · astro-ph.GA · 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{A3KZ4WUR3I6ODTHUREQ6IQOY4P}

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	2026-07-05T03:58:48.444831Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06d59e5a91da3ce1ccf48921e441d8e3f8931d2774cddce596947d5dca1a2cba

Aliases

arxiv: 2105.01070 · arxiv_version: 2105.01070v1 · doi: 10.48550/arxiv.2105.01070 · pith_short_12: A3KZ4WUR3I6O · pith_short_16: A3KZ4WUR3I6ODTHU · pith_short_8: A3KZ4WUR

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/A3KZ4WUR3I6ODTHUREQ6IQOY4P \
  | 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: 06d59e5a91da3ce1ccf48921e441d8e3f8931d2774cddce596947d5dca1a2cba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48118589a836e3ac077d22fad5b10aa0b4bd0af5f63b0449a2d593121e10a08e",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-05-03T18:00:00Z",
    "title_canon_sha256": "7a77c2183622f2eea3b9d333ba109b47f411544c75310c457596a5e9db23548f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.01070",
    "kind": "arxiv",
    "version": 1
  }
}