Pith Number

pith:PKDL5Q6K

pith:2009:PKDL5Q6K3LN4ZNT5IVYNMTK7WR

not attested not anchored not stored refs pending

Breaking a Chaotic Cryptographic Scheme Based on Composition Maps

Chengqing Li, David Arroyo, Kwok-Tung Lo

arxiv:0907.3177 v1 · 2009-07-18 · 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{PKDL5Q6K3LN4ZNT5IVYNMTK7WR}

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	2026-05-18T02:12:55.967126Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a86bec3cadadbccb67d4570d64d5fb474bb4fca5f89a7492260132d6f9c9985

Aliases

arxiv: 0907.3177 · arxiv_version: 0907.3177v1 · doi: 10.48550/arxiv.0907.3177 · pith_short_12: PKDL5Q6K3LN4 · pith_short_16: PKDL5Q6K3LN4ZNT5 · pith_short_8: PKDL5Q6K

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/PKDL5Q6K3LN4ZNT5IVYNMTK7WR \
  | 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: 7a86bec3cadadbccb67d4570d64d5fb474bb4fca5f89a7492260132d6f9c9985

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24964e0268c319905fe652f6db14b7444e8361d2ee342e61b02b54167caef58d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2009-07-18T03:47:49Z",
    "title_canon_sha256": "d1131f6b55b2b0c3ee1eedbfff13b2a665a203e2ff5fe0b578298b5beae412de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3177",
    "kind": "arxiv",
    "version": 1
  }
}