Pith Number

pith:4KS7KIH3

pith:2022:4KS7KIH3YPMBYO6WX6ZBOLMIZZ

not attested not anchored not stored refs pending

SharpContour: A Contour-based Boundary Refinement Approach for Efficient and Accurate Instance Segmentation

Chenming Zhu, Kai Han, Liangdong Qiu, Xiaoguang Han, Xuanye Zhang, Yanran Li

arxiv:2203.13312 v1 · 2022-03-24 · 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{4KS7KIH3YPMBYO6WX6ZBOLMIZZ}

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	2026-07-05T04:08:30.570987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2a5f520fbc3d81c3bd6bfb2172d88ce75b978ba992f899de804b275d372c3a2

Aliases

arxiv: 2203.13312 · arxiv_version: 2203.13312v1 · doi: 10.48550/arxiv.2203.13312 · pith_short_12: 4KS7KIH3YPMB · pith_short_16: 4KS7KIH3YPMBYO6W · pith_short_8: 4KS7KIH3

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/4KS7KIH3YPMBYO6WX6ZBOLMIZZ \
  | 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: e2a5f520fbc3d81c3bd6bfb2172d88ce75b978ba992f899de804b275d372c3a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "103e49e4f0367ea25bf71808d4c927512fa45c98e14db8d15e2564692e2ffd8e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2022-03-24T19:37:20Z",
    "title_canon_sha256": "0e19fa9d163227db47eb7173b6ef4b454e01c91209f32a8ec4b1f48017f63975"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.13312",
    "kind": "arxiv",
    "version": 1
  }
}