Pith Number

pith:VW724BCB

pith:2019:VW724BCBZPKQVNKSAXVQPINYA7

not attested not anchored not stored refs pending

Challenges with Extreme Class-Imbalance and Temporal Coherence: A Study on Solar Flare Data

Azim Ahmadzadeh, Berkay Aydin, Dustin J. Kempton, Manolis K. Georgoulis, Maxwell Hostetter, Rafal A. Angryk, Sushant S. Mahajan

arxiv:1911.09061 v1 · 2019-11-20 · cs.LG · astro-ph.SR · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VW724BCBZPKQVNKSAXVQPINYA7}

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	2026-07-05T00:20:49.209230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

adbfae0441cbd50ab55205eb07a1b807c75eafa0f27ec6dce62817c1f95636b9

Aliases

arxiv: 1911.09061 · arxiv_version: 1911.09061v1 · doi: 10.48550/arxiv.1911.09061 · pith_short_12: VW724BCBZPKQ · pith_short_16: VW724BCBZPKQVNKS · pith_short_8: VW724BCB

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/VW724BCBZPKQVNKSAXVQPINYA7 \
  | 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: adbfae0441cbd50ab55205eb07a1b807c75eafa0f27ec6dce62817c1f95636b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "595df48cf59bebdd401c3afbe150947883847d318ea8b021deaef1a9f0b40756",
    "cross_cats_sorted": [
      "astro-ph.SR",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-11-20T17:46:38Z",
    "title_canon_sha256": "ad072c89a1dc74dc2626c157edfc00fe5edfdf6f77c496ff01b9a7f6924d1315"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.09061",
    "kind": "arxiv",
    "version": 1
  }
}