Pith Number

pith:C32DXZT4

pith:2021:C32DXZT4SHNZZT574H7MGGU7OC

not attested not anchored not stored refs pending

Hard to Forget: Poisoning Attacks on Certified Machine Unlearning

Benjamin I. P. Rubinstein, Neil G. Marchant, Scott Alfeld

arxiv:2109.08266 v2 · 2021-09-17 · cs.LG · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C32DXZT4SHNZZT574H7MGGU7OC}

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.

Cited by

1 paper in Pith

How to Protect Models against Adversarial Unlearning?

Receipt and verification

First computed	2026-07-05T03:55:49.374185Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16f43be67c91db9ccfbfe1fec31a9f70bc0d073664a2bedd9a082c131a9bec8c

Aliases

arxiv: 2109.08266 · arxiv_version: 2109.08266v2 · doi: 10.48550/arxiv.2109.08266 · pith_short_12: C32DXZT4SHNZ · pith_short_16: C32DXZT4SHNZZT57 · pith_short_8: C32DXZT4

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/C32DXZT4SHNZZT574H7MGGU7OC \
  | 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: 16f43be67c91db9ccfbfe1fec31a9f70bc0d073664a2bedd9a082c131a9bec8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca26e4a59adfc2bf7a307d0327b09e7b84c8a2dedf0666c21953f3f48139f3d4",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-09-17T01:00:46Z",
    "title_canon_sha256": "8f62e4399a2e3366d299e23764f6ba937727295f35fb2b60f8139e623f88dea2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.08266",
    "kind": "arxiv",
    "version": 2
  }
}