Pith Number

pith:N2Y7PWNO

pith:2022:N2Y7PWNOQCLCS3QLHUKLZRM3S2

not attested not anchored not stored refs pending

The Past Mistake is the Future Wisdom: Error-driven Contrastive Probability Optimization for Chinese Spell Checking

Chao Li, Hai-Tao Zheng, Qingyu Zhou, Rongyi Sun, Ruiyang Liu, Yangning Li, Yinghui Li, Yunbo Cao, Zhongli Li, Zizhen Wang

arxiv:2203.00991 v1 · 2022-03-02 · 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{N2Y7PWNOQCLCS3QLHUKLZRM3S2}

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	2026-07-05T04:01:36.212363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6eb1f7d9ae8096296e0b3d14bcc59b96a0f977bbfb5fbafad9372eb7a97cb70d

Aliases

arxiv: 2203.00991 · arxiv_version: 2203.00991v1 · doi: 10.48550/arxiv.2203.00991 · pith_short_12: N2Y7PWNOQCLC · pith_short_16: N2Y7PWNOQCLCS3QL · pith_short_8: N2Y7PWNO

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/N2Y7PWNOQCLCS3QLHUKLZRM3S2 \
  | 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: 6eb1f7d9ae8096296e0b3d14bcc59b96a0f977bbfb5fbafad9372eb7a97cb70d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a55bb3e7437781bdf9093c3d9bdfaca0ed93c08ddb74ef2606c0c10b50fe5fb8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2022-03-02T09:58:56Z",
    "title_canon_sha256": "10ddc87e23917a9076ef1083cf1e15971c8c3421cbcbe201be50074c62bfc49d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.00991",
    "kind": "arxiv",
    "version": 1
  }
}