Pith Number

pith:P6SETGDW

pith:2025:P6SETGDWLSHMBTDUZ5SPOFUIHF

not attested not anchored not stored refs pending

Classifying Radio-Loud and Radio-Quiet Quasars With Novel PCA Based Regression Classifier

Ramkrishna Joshi, Vivek Shinde

arxiv:2505.01335 v1 · 2025-05-02 · 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{P6SETGDWLSHMBTDUZ5SPOFUIHF}

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	2026-07-05T10:57:49.527575Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fa44998765c8ec0cc74cf64f71688397067dd9cf318b0362e0c365a83619992

Aliases

arxiv: 2505.01335 · arxiv_version: 2505.01335v1 · doi: 10.48550/arxiv.2505.01335 · pith_short_12: P6SETGDWLSHM · pith_short_16: P6SETGDWLSHMBTDU · pith_short_8: P6SETGDW

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/P6SETGDWLSHMBTDUZ5SPOFUIHF \
  | 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: 7fa44998765c8ec0cc74cf64f71688397067dd9cf318b0362e0c365a83619992

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad2064abc91f028f95ada07d49a41fa57f278297484bc51296f11e128dfba421",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-05-02T15:07:44Z",
    "title_canon_sha256": "1ad0fa1225284553b778dab76ba13caa7568a277c37add1bb07a14258e1202bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.01335",
    "kind": "arxiv",
    "version": 1
  }
}