Pith Number

pith:VXROJPLK

pith:2011:VXROJPLKVCE6ZW4GL7GECE2G6F

not attested not anchored not stored refs pending

Shannon Entropy based Randomness Measurement and Test for Image Encryption

Joseph P. Noonan, Sos Agaian, Yue Wu

arxiv:1103.5520 v1 · 2011-03-29 · cs.CR · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VXROJPLKVCE6ZW4GL7GECE2G6F}

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	2026-05-18T00:56:47.334830Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ade2e4bd6aa889ecdb865fcc411346f166902e20a2c7ea8309eb6bac9e46b9fe

Aliases

arxiv: 1103.5520 · arxiv_version: 1103.5520v1 · doi: 10.48550/arxiv.1103.5520 · pith_short_12: VXROJPLKVCE6 · pith_short_16: VXROJPLKVCE6ZW4G · pith_short_8: VXROJPLK

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/VXROJPLKVCE6ZW4GL7GECE2G6F \
  | 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: ade2e4bd6aa889ecdb865fcc411346f166902e20a2c7ea8309eb6bac9e46b9fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cdf92492a7751c689481a734e8f77bb8fe3b45eb56b6553e68fa5212181faaf",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2011-03-29T00:55:53Z",
    "title_canon_sha256": "0fcd19c07ec31c820dc59e8e4ed79b4a75896f50357ca5de25512856c57c91a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.5520",
    "kind": "arxiv",
    "version": 1
  }
}