Pith Number

pith:6GOPCZTA

pith:2018:6GOPCZTAXYTZELZWVWRXO2BTSL

not attested not anchored not stored refs pending

Adaptive Polar Active Contour for Segmentation and Tracking in Ultrasound Videos

Andrew Smith, Ebrahim Karami, Mohamed Shehata

arxiv:1803.07195 v1 · 2018-03-19 · 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{6GOPCZTAXYTZELZWVWRXO2BTSL}

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	2026-05-18T00:20:33.998635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f19cf16660be27922f36ada377683392f41a6ab9a28464c800d308de5d53b311

Aliases

arxiv: 1803.07195 · arxiv_version: 1803.07195v1 · doi: 10.48550/arxiv.1803.07195 · pith_short_12: 6GOPCZTAXYTZ · pith_short_16: 6GOPCZTAXYTZELZW · pith_short_8: 6GOPCZTA

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/6GOPCZTAXYTZELZWVWRXO2BTSL \
  | 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: f19cf16660be27922f36ada377683392f41a6ab9a28464c800d308de5d53b311

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7cc8f5b0a6096e98664753979354514dc373597cdbf7527bdf28f1b16b8a4838",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2018-03-19T23:30:06Z",
    "title_canon_sha256": "d11daf3201e0649e69640e50e1881313700f58d429a961937b772a6b09a4a129"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07195",
    "kind": "arxiv",
    "version": 1
  }
}