Pith Number

pith:VNX6XZXV

pith:2017:VNX6XZXV5JPDBVTRYHCTKFYLGA

not attested not anchored not stored refs pending

APPD: Adaptive and Precise Pupil Boundary Detection using Entropy of Contour Gradients

Cihan Topal, Cuneyt Akinlar, Halil Ibrahim Cakir

arxiv:1709.06366 v2 · 2017-09-19 · 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{VNX6XZXV5JPDBVTRYHCTKFYLGA}

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	2026-05-18T00:08:31.392086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab6febe6f5ea5e30d671c1c535170b301b93312baf9b447c5c30d5c214c828e5

Aliases

arxiv: 1709.06366 · arxiv_version: 1709.06366v2 · doi: 10.48550/arxiv.1709.06366 · pith_short_12: VNX6XZXV5JPD · pith_short_16: VNX6XZXV5JPDBVTR · pith_short_8: VNX6XZXV

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/VNX6XZXV5JPDBVTRYHCTKFYLGA \
  | 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: ab6febe6f5ea5e30d671c1c535170b301b93312baf9b447c5c30d5c214c828e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fd05d11b6400b109308015b1c7f3eb436295b397df482f0bdfa6852d4323f14",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2017-09-19T12:09:34Z",
    "title_canon_sha256": "53757b1564be55bd028bb1dd4f72d3770b5a4f033c137a9976d63138be013ecc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.06366",
    "kind": "arxiv",
    "version": 2
  }
}