Pith Number

pith:QR2H4IJO

pith:2021:QR2H4IJOPKBLFJ4EZWN7MZZWOQ

not attested not anchored not stored refs pending

Backdoor Attack in the Physical World

Shu-Tao Xia, Tongqing Zhai, Yiming Li, Yong Jiang, ZhiFeng Li

arxiv:2104.02361 v2 · 2021-04-06 · cs.CR · cs.AI · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QR2H4IJOPKBLFJ4EZWN7MZZWOQ}

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

4 papers in Pith

PolicyGuard: Towards Test-time and Step-level Adversary (Backdoor) Defense for Reinforcement Learning Agent

DeTrigger: A Gradient-Centric Approach to Backdoor Attack Mitigation in Federated Learning

Defending against Backdoor Attacks via Module Switching

When Stronger Triggers Backfire: A High-Dimensional Theory of Backdoor Attacks

Receipt and verification

First computed	2026-07-05T02:34:48.443207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84747e212e7a82b2a784cd9bf6673674055fca76750971ad57dae08ce1e862f0

Aliases

arxiv: 2104.02361 · arxiv_version: 2104.02361v2 · doi: 10.48550/arxiv.2104.02361 · pith_short_12: QR2H4IJOPKBL · pith_short_16: QR2H4IJOPKBLFJ4E · pith_short_8: QR2H4IJO

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/QR2H4IJOPKBLFJ4EZWN7MZZWOQ \
  | 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: 84747e212e7a82b2a784cd9bf6673674055fca76750971ad57dae08ce1e862f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c6ef778f1898bb0ef9e7ebf430084b98a6263fd3632c15788ab22f8211fcb0a",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2021-04-06T08:37:33Z",
    "title_canon_sha256": "ccf67822789b40f469dde8f7b92dd31a3a7a7613fe59859e7361a27b72ebb144"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.02361",
    "kind": "arxiv",
    "version": 2
  }
}