Pith Number

pith:G5Q2WRPQ

pith:2025:G5Q2WRPQMDCA6YTD2FF3GDPCZL

not attested not anchored not stored refs pending

Unlearning vs. Obfuscation: Are We Truly Removing Knowledge?

Guangzhi Sun, Mark Gales, Potsawee Manakul, Xiao Zhan

arxiv:2505.02884 v2 · 2025-05-05 · cs.LG · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G5Q2WRPQMDCA6YTD2FF3GDPCZL}

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	2026-07-05T12:07:06.928369Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3761ab45f060c40f6263d14bb30de2cacba8e828c0f950a135b3e2e1bcb523d6

Aliases

arxiv: 2505.02884 · arxiv_version: 2505.02884v2 · doi: 10.48550/arxiv.2505.02884 · pith_short_12: G5Q2WRPQMDCA · pith_short_16: G5Q2WRPQMDCA6YTD · pith_short_8: G5Q2WRPQ

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/G5Q2WRPQMDCA6YTD2FF3GDPCZL \
  | 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: 3761ab45f060c40f6263d14bb30de2cacba8e828c0f950a135b3e2e1bcb523d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63fe03a5289de588b8346d50e1060c74b92ca064656b9d026c1644cf47c1631a",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-05-05T14:21:08Z",
    "title_canon_sha256": "095709cf318db3a05f34bc4473740832011c72a5edce845496b618b7cbe70b22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.02884",
    "kind": "arxiv",
    "version": 2
  }
}