Pith Number

pith:FIDH4KCV

pith:2021:FIDH4KCVZXNZOM6QVY7ZJHFQRT

not attested not anchored not stored refs pending

D2A U-Net: Automatic Segmentation of COVID-19 Lesions from CT Slices with Dilated Convolution and Dual Attention Mechanism

Fan Song, Guangda Fan, Guanglei Zhang, Luqi Zhang, Peng Zhang, Xiangyu Zhao, Yangyang Sun, Yujia Wang, Zheyuan Tian

arxiv:2102.05210 v1 · 2021-02-10 · eess.IV · 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{FIDH4KCVZXNZOM6QVY7ZJHFQRT}

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	2026-07-05T02:14:16.215537Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a067e2855cddb9733d0ae3f949cb08cdc529ec4acd399ceeeceb535dba1a397

Aliases

arxiv: 2102.05210 · arxiv_version: 2102.05210v1 · doi: 10.48550/arxiv.2102.05210 · pith_short_12: FIDH4KCVZXNZ · pith_short_16: FIDH4KCVZXNZOM6Q · pith_short_8: FIDH4KCV

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/FIDH4KCVZXNZOM6QVY7ZJHFQRT \
  | 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: 2a067e2855cddb9733d0ae3f949cb08cdc529ec4acd399ceeeceb535dba1a397

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e365f9fd4ce4a041b1e7d4aaa66ad0548287916bade231fc62ff582b11a3932a",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2021-02-10T01:21:59Z",
    "title_canon_sha256": "f79e062c0707601e88a39f82e80ef0f15496edf76cee1851a596c988e34839df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.05210",
    "kind": "arxiv",
    "version": 1
  }
}