Pith Number

pith:67CO5B7R

pith:2012:67CO5B7RBGAKJP5HSOXPTKXPXV

not attested not anchored not stored refs pending

An Approach of Digital Image Copyright Protection by Using Watermarking Technology

Md. Golam Robiul Alam, Md. Selim Reza, Mohammed Shafiul Alam Khan, Serajul Islam

arxiv:1205.6229 v1 · 2012-05-28 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{67CO5B7RBGAKJP5HSOXPTKXPXV}

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	2026-05-18T03:54:47.409945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7c4ee87f10980a4bfa793aef9aaefbd6207054a9586b32577e7695812047510

Aliases

arxiv: 1205.6229 · arxiv_version: 1205.6229v1 · doi: 10.48550/arxiv.1205.6229 · pith_short_12: 67CO5B7RBGAK · pith_short_16: 67CO5B7RBGAKJP5H · pith_short_8: 67CO5B7R

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/67CO5B7RBGAKJP5HSOXPTKXPXV \
  | 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: f7c4ee87f10980a4bfa793aef9aaefbd6207054a9586b32577e7695812047510

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b1d9230b7358c0540d998b13c5c6b12d7aa216dc570cfaf79f349e8f75fc3b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2012-05-28T22:43:22Z",
    "title_canon_sha256": "870f31e013259b2270ece9384268867b2a5dded95ac6f32991cc401c7116333c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.6229",
    "kind": "arxiv",
    "version": 1
  }
}