Pith Number

pith:2IKVYCMN

pith:2026:2IKVYCMNVLDFHYVOYEAFXLRQVQ

not attested not anchored not stored refs pending

From Convolution to Transformer: A Comparative Study of U-Net Variants for Brain Tumor and Retinal Vessel Segmentation

Andy Perkins, Jiacheng Li, Khoa Pham, Noorbakhsh Amiri Golilarz, Sindhuja Penchala

arxiv:2606.22168 v1 · 2026-06-20 · 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{2IKVYCMNVLDFHYVOYEAFXLRQVQ}

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	2026-06-23T02:13:30.877032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2155c098daac653e2aec1005bae30ac25856e667a04fd9bca8c989f47541d3d

Aliases

arxiv: 2606.22168 · arxiv_version: 2606.22168v1 · doi: 10.48550/arxiv.2606.22168 · pith_short_12: 2IKVYCMNVLDF · pith_short_16: 2IKVYCMNVLDFHYVO · pith_short_8: 2IKVYCMN

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/2IKVYCMNVLDFHYVOYEAFXLRQVQ \
  | 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: d2155c098daac653e2aec1005bae30ac25856e667a04fd9bca8c989f47541d3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c550bfd6f078e43990304fa778917b4473aa945b847d78159caf3ee42bbb95f0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-06-20T17:57:12Z",
    "title_canon_sha256": "78718b2cec61986d869226aada97435facccf9d02dc4710cf9a744031dc47774"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.22168",
    "kind": "arxiv",
    "version": 1
  }
}