Pith Number

pith:UPWJGOOD

pith:2013:UPWJGOODJM7R6P4S5PCH32IS2D

not attested not anchored not stored refs pending

The Vernam cipher is robust to small deviations from randomness

Boris Ryabko

arxiv:1303.2219 v1 · 2013-03-09 · 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{UPWJGOODJM7R6P4S5PCH32IS2D}

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	2026-05-18T03:31:19.659577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3ec9339c34b3f1f3f92ebc47de912d0d76c7da4a77280f78e2485c8a9e8127d

Aliases

arxiv: 1303.2219 · arxiv_version: 1303.2219v1 · doi: 10.48550/arxiv.1303.2219 · pith_short_12: UPWJGOODJM7R · pith_short_16: UPWJGOODJM7R6P4S · pith_short_8: UPWJGOOD

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/UPWJGOODJM7R6P4S5PCH32IS2D \
  | 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: a3ec9339c34b3f1f3f92ebc47de912d0d76c7da4a77280f78e2485c8a9e8127d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdc40aadbeae2f50d092fdd4a6def38cdee4abe5861f012fc7a80b0210136cdb",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2013-03-09T15:12:46Z",
    "title_canon_sha256": "4923cc52c83286b7eb93d04c497d945bb569234c823b2b5d75b7f09f689a1320"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.2219",
    "kind": "arxiv",
    "version": 1
  }
}