Pith Number

pith:U4JEF2P6

pith:2019:U4JEF2P6DKCIQTKTNESLLOHBT7

not attested not anchored not stored refs pending

Clonability of anti-counterfeiting printable graphical codes: a machine learning approach

Olga Taran, Slava Voloshynovskiy, Slavi Bonev

arxiv:1903.07359 v1 · 2019-03-18 · cs.CR · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U4JEF2P6DKCIQTKTNESLLOHBT7}

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	2026-05-17T23:51:01.634422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a71242e9fe1a84884d536924b5b8e19ff64f644b5bc3e5036864336a4b129a80

Aliases

arxiv: 1903.07359 · arxiv_version: 1903.07359v1 · doi: 10.48550/arxiv.1903.07359 · pith_short_12: U4JEF2P6DKCI · pith_short_16: U4JEF2P6DKCIQTKT · pith_short_8: U4JEF2P6

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/U4JEF2P6DKCIQTKTNESLLOHBT7 \
  | 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: a71242e9fe1a84884d536924b5b8e19ff64f644b5bc3e5036864336a4b129a80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "977407ee05f3d67f0123d2648d5151e08548291f00e8ecb390149e9451703196",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-03-18T10:57:36Z",
    "title_canon_sha256": "fed118abd16279098cd04df90f4cdf549ebb0c5138873c2881ee9ead02cda6c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.07359",
    "kind": "arxiv",
    "version": 1
  }
}