Pith Number

pith:FBWLUHHN

pith:2021:FBWLUHHNKI6GBQDXNURSWYFSNK

not attested not anchored not stored refs pending

Protecting Intellectual Property of Language Generation APIs with Lexical Watermark

Chenguang Wang, Fangzhao Wu, Lingjuan Lyu, Qiongkai Xu, Xuanli He

arxiv:2112.02701 v1 · 2021-12-05 · cs.CR · 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{FBWLUHHNKI6GBQDXNURSWYFSNK}

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	2026-07-05T03:37:56.459132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

286cba1ced523c60c0776d232b60b26ab83417b2ef967206b7936253bc39a99a

Aliases

arxiv: 2112.02701 · arxiv_version: 2112.02701v1 · doi: 10.48550/arxiv.2112.02701 · pith_short_12: FBWLUHHNKI6G · pith_short_16: FBWLUHHNKI6GBQDX · pith_short_8: FBWLUHHN

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/FBWLUHHNKI6GBQDXNURSWYFSNK \
  | 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: 286cba1ced523c60c0776d232b60b26ab83417b2ef967206b7936253bc39a99a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42996d426455f8646161f78c07f75e280d1507bfcd7fe6fc10ef03e267831c52",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2021-12-05T22:54:54Z",
    "title_canon_sha256": "38fc5e1ae2b80bf29305cbd15b8caa033c5c87470aa869f2b013fbb5996fd0c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.02701",
    "kind": "arxiv",
    "version": 1
  }
}