Pith Number

pith:636A3PVO

pith:2018:636A3PVOGYF3VDEM3CHYFUHE7D

not attested not anchored not stored refs pending

Stack-U-Net: Refinement Network for Image Segmentation on the Example of Optic Disc and Cup

Anastasia Georgievskaya, Artem Sevastopolsky, Blake M. Snyder, Jeremy D. Keenan, Konstantin Kiselev, Stepan Drapak

arxiv:1804.11294 v2 · 2018-04-30 · 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{636A3PVOGYF3VDEM3CHYFUHE7D}

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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	2026-05-18T00:00:13.237164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6fc0dbeae360bba8c8cd88f82d0e4f8c7880ae4fc36e45bf54d2236afff5c38

Aliases

arxiv: 1804.11294 · arxiv_version: 1804.11294v2 · doi: 10.48550/arxiv.1804.11294 · pith_short_12: 636A3PVOGYF3 · pith_short_16: 636A3PVOGYF3VDEM · pith_short_8: 636A3PVO

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/636A3PVOGYF3VDEM3CHYFUHE7D \
  | 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: f6fc0dbeae360bba8c8cd88f82d0e4f8c7880ae4fc36e45bf54d2236afff5c38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28e32159b966b96070c81471aebdca847ed8dc270393ec18068c13b9ed23812f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-04-30T16:15:36Z",
    "title_canon_sha256": "b9d4c73eeae6086b24f0abf6347431ac94f0091947345cbbdf700e82153049f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.11294",
    "kind": "arxiv",
    "version": 2
  }
}