Pith Number

pith:B3IC2DQZ

pith:2026:B3IC2DQZPW245QRWBNXLCHWKUS

not attested not anchored not stored refs pending

A Classifier That Teaches Itself: Self-Improving, Frozen-gate Training (SIFT) for Dynamic Document Classification

Alexandru Preda, Bogdan Raduta, Horia Velicu, Serban Chiricescu

arxiv:2607.18358 v1 · 2026-07-20 · cs.CL · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B3IC2DQZPW245QRWBNXLCHWKUS}

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	2026-07-22T00:22:43.353052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ed02d0e197db5cec2360b6eb11ecaa4b03b4cb6381f2d3a14d132957f31f98b

Aliases

arxiv: 2607.18358 · arxiv_version: 2607.18358v1 · doi: 10.48550/arxiv.2607.18358 · pith_short_12: B3IC2DQZPW24 · pith_short_16: B3IC2DQZPW245QRW · pith_short_8: B3IC2DQZ

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/B3IC2DQZPW245QRWBNXLCHWKUS \
  | 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: 0ed02d0e197db5cec2360b6eb11ecaa4b03b4cb6381f2d3a14d132957f31f98b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ddb0c5b1a1eb202e5a0ddbd84678e63487d27707b2c3951ba6071a033b385db",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-07-20T12:38:50Z",
    "title_canon_sha256": "fdd54f7464a0221b54938df78a5d5529bcc9d4cfc5de28b415bd6dc7ba9a6b0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.18358",
    "kind": "arxiv",
    "version": 1
  }
}