Pith Number

pith:NRRKZXSP

pith:2019:NRRKZXSPXNXZVNZBOUOBTARXDD

not attested not anchored not stored refs pending

Towards Document Image Quality Assessment: A Text Line Based Framework and A Synthetic Text Line Image Dataset

Fan Zhu, Hongyu Li, Junhua Qiu

arxiv:1906.01907 v1 · 2019-06-05 · 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{NRRKZXSPXNXZVNZBOUOBTARXDD}

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	2026-05-17T23:44:05.800790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c62acde4fbb6f9ab721751c19823718e51019a3314b22100e6e84137b2e9ace

Aliases

arxiv: 1906.01907 · arxiv_version: 1906.01907v1 · doi: 10.48550/arxiv.1906.01907 · pith_short_12: NRRKZXSPXNXZ · pith_short_16: NRRKZXSPXNXZVNZB · pith_short_8: NRRKZXSP

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/NRRKZXSPXNXZVNZBOUOBTARXDD \
  | 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: 6c62acde4fbb6f9ab721751c19823718e51019a3314b22100e6e84137b2e9ace

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8e453be7012f49b940ca4b333a3bfe0dce2701b9480623e7b6e0414c312eb9e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-06-05T09:40:34Z",
    "title_canon_sha256": "808138af5e94f8b808e3fce0ee16fae8b81a300e4f54e3faa97bb25840ce20f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.01907",
    "kind": "arxiv",
    "version": 1
  }
}