Pith Number

pith:UGJP7HMP

pith:2026:UGJP7HMPGG2KJZ266MGPLET2GV

not attested not anchored not stored refs pending

DocOCR-Eval: A Correction-Based Framework for OCR Tool Selection Without Ground Truth

Lawrence Chun Man Lau, Puzhen Wu, Sirui Li, Wei Liu, Yifan Peng, Yihao Ding, Zihan Xu

arxiv:2607.16203 v1 · 2026-05-05 · cs.LG · 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{UGJP7HMPGG2KJZ266MGPLET2GV}

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	2026-07-21T00:20:05.549541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a192ff9d8f31b4a4e75ef30cf5927a35755683da124e642292a490664a6ab7da

Aliases

arxiv: 2607.16203 · arxiv_version: 2607.16203v1 · doi: 10.48550/arxiv.2607.16203 · pith_short_12: UGJP7HMPGG2K · pith_short_16: UGJP7HMPGG2KJZ26 · pith_short_8: UGJP7HMP

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/UGJP7HMPGG2KJZ266MGPLET2GV \
  | 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: a192ff9d8f31b4a4e75ef30cf5927a35755683da124e642292a490664a6ab7da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf770872ccc74b715525e0935d7549a863afb6f0c6cf7ac7ddc605596660a839",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-05T10:59:34Z",
    "title_canon_sha256": "dc65cb284ba57d5d8a1b4acdbe45500c5c5f3e5adc0abd874882a0787add62bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.16203",
    "kind": "arxiv",
    "version": 1
  }
}