Pith Number

pith:NUP6XNY4

pith:2021:NUP6XNY4UKPUGDVGKUG7VQGOP5

not attested not anchored not stored refs pending

Textual Backdoor Attacks Can Be More Harmful via Two Simple Tricks

Fanchao Qi, Hongcheng Gao, Maosong Sun, Yangyi Chen, Zhiyuan Liu

arxiv:2110.08247 v2 · 2021-10-15 · cs.CR · cs.AI · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NUP6XNY4UKPUGDVGKUG7VQGOP5}

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	2026-07-05T05:08:14.381423Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d1febb71ca29f430ea6550dfac0ce7f4c41437105b1564efba0036b42d7c5c1

Aliases

arxiv: 2110.08247 · arxiv_version: 2110.08247v2 · doi: 10.48550/arxiv.2110.08247 · pith_short_12: NUP6XNY4UKPU · pith_short_16: NUP6XNY4UKPUGDVG · pith_short_8: NUP6XNY4

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/NUP6XNY4UKPUGDVGKUG7VQGOP5 \
  | 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: 6d1febb71ca29f430ea6550dfac0ce7f4c41437105b1564efba0036b42d7c5c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "925dce046f5166617d04023ca594a7132254d8fa7228891d0baa482ae419592e",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2021-10-15T17:58:46Z",
    "title_canon_sha256": "9bd22a1db8edc53f4f3b65b5825f788194457765021cd4e8cf3c6d6156b2a54b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.08247",
    "kind": "arxiv",
    "version": 2
  }
}