Pith Number

pith:T62FUQRJ

pith:2008:T62FUQRJVH2CS66AIYTPV3VF57

not attested not anchored not stored refs pending

Constructing Perfect Steganographic Systems

Boris Ryabko, Daniil Ryabko

arxiv:0809.1593 v2 · 2008-09-09 · 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{T62FUQRJVH2CS66AIYTPV3VF57}

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	2026-05-18T04:01:26.769459Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fb45a4229a9f4297bc04626faeea5efebbae24e11a4b2a6497e470b35170a92

Aliases

arxiv: 0809.1593 · arxiv_version: 0809.1593v2 · doi: 10.48550/arxiv.0809.1593 · pith_short_12: T62FUQRJVH2C · pith_short_16: T62FUQRJVH2CS66A · pith_short_8: T62FUQRJ

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/T62FUQRJVH2CS66AIYTPV3VF57 \
  | 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: 9fb45a4229a9f4297bc04626faeea5efebbae24e11a4b2a6497e470b35170a92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cf0f8d286513ccd5dd479df78dc9be53976ef9fba13c664703486696230e81a",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2008-09-09T16:09:52Z",
    "title_canon_sha256": "decbc9261658f06978909013a2c5b1a27ac87dab619af2cd363ea14f53e87600"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.1593",
    "kind": "arxiv",
    "version": 2
  }
}