Pith Number

pith:L2BQC76Z

pith:2022:L2BQC76ZCKNRI2UZVH6NXDM7O5

not attested not anchored not stored refs pending

A machine learning classifier for LOFAR radio galaxy cross-matching techniques

Daniel J.B. Smith, G\"ulay G\"urkan, Jose Sabater, Lara Alegre, Martin J. Hardcastle, Philip Best, Rafa\"el I.J. Mostert, Rohit Kondapally, Tim W. Shimwell, Wendy L. Williams

arxiv:2207.01645 v1 · 2022-07-04 · astro-ph.IM · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L2BQC76ZCKNRI2UZVH6NXDM7O5}

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.

Cited by

1 paper in Pith

The Treble Clef radio phoenix and its old nonthermal filaments

Receipt and verification

First computed	2026-07-05T05:03:27.467420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e83017fd9129b146a99a9fcdb8d9f776086baaf8e7e1a6d336c385d28d4edc4

Aliases

arxiv: 2207.01645 · arxiv_version: 2207.01645v1 · doi: 10.48550/arxiv.2207.01645 · pith_short_12: L2BQC76ZCKNR · pith_short_16: L2BQC76ZCKNRI2UZ · pith_short_8: L2BQC76Z

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/L2BQC76ZCKNRI2UZVH6NXDM7O5 \
  | 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: 5e83017fd9129b146a99a9fcdb8d9f776086baaf8e7e1a6d336c385d28d4edc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4401021ada230e172eb6844c8023317ac630170e6681f82b99e2d80c991875b6",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2022-07-04T18:00:11Z",
    "title_canon_sha256": "11242e83be4cbde2f51a75a5aeceeab93c2c5b8b7e6d468471d5f24fbf72869e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.01645",
    "kind": "arxiv",
    "version": 1
  }
}