Pith Number

pith:4MEKE2QT

pith:2019:4MEKE2QT6IMFQY7LGCPKFW5RIP

not attested not anchored not stored refs pending

DDNet: Cartesian-polar Dual-domain Network for the Joint Optic Disc and Cup Segmentation

Beiji Zou, Qing Liu, Wei Ke, Xiaopeng Hong, Zailiang Chen

arxiv:1904.08773 v1 · 2019-04-18 · 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{4MEKE2QT6IMFQY7LGCPKFW5RIP}

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	2026-05-17T23:48:12.982192Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e308a26a13f2185863eb309ea2dbb143d34633bacdfb5d91d638e83d4e370875

Aliases

arxiv: 1904.08773 · arxiv_version: 1904.08773v1 · doi: 10.48550/arxiv.1904.08773 · pith_short_12: 4MEKE2QT6IMF · pith_short_16: 4MEKE2QT6IMFQY7L · pith_short_8: 4MEKE2QT

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/4MEKE2QT6IMFQY7LGCPKFW5RIP \
  | 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: e308a26a13f2185863eb309ea2dbb143d34633bacdfb5d91d638e83d4e370875

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7ac8ed80ff43f986cbb41a7a19d223673e2ae07df040505e94a1b3910be2935",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-04-18T13:38:55Z",
    "title_canon_sha256": "d74bf37d26b35077d81fcd8cf23aa863b3500f3c604f5885e5d246ae6dc8c1ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08773",
    "kind": "arxiv",
    "version": 1
  }
}