Pith Number

pith:QF7N3AYP

pith:2019:QF7N3AYPIPXYMI7ASRKTTELVJG

not attested not anchored not stored refs pending

Automatic Lumbar Spinal CT Image Segmentation with a Dual Densely Connected U-Net

Chao Liu, He Tang, Shilong Huang, Xiaobing Pei, Xin Li

arxiv:1910.09198 v2 · 2019-10-21 · 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{QF7N3AYPIPXYMI7ASRKTTELVJG}

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	2026-07-05T00:38:05.670663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

817edd830f43ef8623e0945539917549abdc4b3ae7a34eeca969b78befde6427

Aliases

arxiv: 1910.09198 · arxiv_version: 1910.09198v2 · doi: 10.48550/arxiv.1910.09198 · pith_short_12: QF7N3AYPIPXY · pith_short_16: QF7N3AYPIPXYMI7A · pith_short_8: QF7N3AYP

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/QF7N3AYPIPXYMI7ASRKTTELVJG \
  | 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: 817edd830f43ef8623e0945539917549abdc4b3ae7a34eeca969b78befde6427

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fa0b98f9fc07fd4d608df83750b568b75ae1ce6ff1a9c226862e6b2b8786d34",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2019-10-21T08:20:51Z",
    "title_canon_sha256": "baf725896fe634a9e0f4a17a6d19b110ace2d1ce23f919d6b7246c62e660e42f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.09198",
    "kind": "arxiv",
    "version": 2
  }
}