Pith Number

pith:3POX4UYO

pith:2021:3POX4UYOQLKMDAR77BW3MLU6GE

not attested not anchored not stored refs pending

PP-OCRv2: Bag of Tricks for Ultra Lightweight OCR System

Bin Lu, Cheng Cui, Chenxia Li, Dianhai Yu, Jun Zhou, Qiwen Liu, Ruoyu Guo, Weiwei Liu, Xiaoguang Hu, Yanjun Ma, Yehua Yang, Yuning Du

arxiv:2109.03144 v2 · 2021-09-07 · 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{3POX4UYOQLKMDAR77BW3MLU6GE}

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

5 papers in Pith

PP-OCRv6: From 1.5M to 34.5M Parameters, Surpassing Billion-Scale VLMs on OCR Tasks

StrucTab: A Structured Optimization Framework for Table Parsing

General OCR Theory: Towards OCR-2.0 via a Unified End-to-end Model

PaddleOCR 3.0 Technical Report

ViBR: Automated Bug Replay from Video-based Reports using Vision-Language Models

Receipt and verification

First computed	2026-07-05T03:21:59.622778Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbdd7e530e82d4c1823ff86db62e9e3102df481dc6d815a59a226ffcb06b2313

Aliases

arxiv: 2109.03144 · arxiv_version: 2109.03144v2 · doi: 10.48550/arxiv.2109.03144 · pith_short_12: 3POX4UYOQLKM · pith_short_16: 3POX4UYOQLKMDAR7 · pith_short_8: 3POX4UYO

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/3POX4UYOQLKMDAR77BW3MLU6GE \
  | 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: dbdd7e530e82d4c1823ff86db62e9e3102df481dc6d815a59a226ffcb06b2313

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f42e613e254f0ade830018d2188842656a9fe0ab1e6a7ee64f515525b2422900",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-09-07T15:24:40Z",
    "title_canon_sha256": "e55e915eb9bb43a33c6198b542b4876763d6d89a237c2fb489bc8a574435d3a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.03144",
    "kind": "arxiv",
    "version": 2
  }
}