Pith Number

pith:4FNNWK37

pith:2026:4FNNWK37QUN3WKZK2CD7PG6C5G

not attested not anchored not stored refs pending

When X-ray Features Hurt: Label Noise and Luminosity Overlap in Machine Learning Classification of AGN and Star-forming Galaxies

Jaymin Ding

arxiv:2607.13233 v1 · 2026-07-14 · 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{4FNNWK37QUN3WKZK2CD7PG6C5G}

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	2026-07-16T00:22:04.096249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e15adb2b7f851bbb2b2ad087f79bc2e99a1eca05a2d62a23dff51d1a805d61b5

Aliases

arxiv: 2607.13233 · arxiv_version: 2607.13233v1 · doi: 10.48550/arxiv.2607.13233 · pith_short_12: 4FNNWK37QUN3 · pith_short_16: 4FNNWK37QUN3WKZK · pith_short_8: 4FNNWK37

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/4FNNWK37QUN3WKZK2CD7PG6C5G \
  | 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: e15adb2b7f851bbb2b2ad087f79bc2e99a1eca05a2d62a23dff51d1a805d61b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce681eb16cbe2dabad7f8001f747499e8cf71d929e341287852109a0a1d4c3e9",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-07-14T19:51:47Z",
    "title_canon_sha256": "9fe749f478bb525dc03204695361fe87f7d26bd364186a905adf10ff84cf146b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.13233",
    "kind": "arxiv",
    "version": 1
  }
}