Pith Number

pith:7SOZYLDL

pith:2012:7SOZYLDL5I3HQSEYKTOQEMTJK5

not attested not anchored not stored refs pending

A Session Based Blind Watermarking Technique within the NROI of Retinal Fundus Images for Authentication Using DWT, Spread Spectrum and Harris Corner Detection

Achintya Das, Moumita Pal, Nilanjan Dey

arxiv:1209.0053 v1 · 2012-09-01 · cs.CV · cs.CY

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7SOZYLDL5I3HQSEYKTOQEMTJK5}

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	2026-05-18T03:46:30.164199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc9d9c2c6bea3678489854dd0232695779b6aee1abf4ed1bce814a8129378fc1

Aliases

arxiv: 1209.0053 · arxiv_version: 1209.0053v1 · doi: 10.48550/arxiv.1209.0053 · pith_short_12: 7SOZYLDL5I3H · pith_short_16: 7SOZYLDL5I3HQSEY · pith_short_8: 7SOZYLDL

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/7SOZYLDL5I3HQSEYKTOQEMTJK5 \
  | 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: fc9d9c2c6bea3678489854dd0232695779b6aee1abf4ed1bce814a8129378fc1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56d8f00079419f2ebcb7d6eb4013ff025a86c38f201f2c322c3e38bd15bcbac3",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-09-01T04:17:39Z",
    "title_canon_sha256": "1f730600bd37d664d4b679039a027a08f7f9e0e46299d7ab002998874cfff315"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.0053",
    "kind": "arxiv",
    "version": 1
  }
}