Pith Number

pith:QYGCS55D

pith:2019:QYGCS55DMFYJCO5EFSVGX5O3LJ

not attested not anchored not stored refs pending

Do We Train on Test Data? Purging CIFAR of Near-Duplicates

Bj\"orn Barz, Joachim Denzler

arxiv:1902.00423 v2 · 2019-02-01 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QYGCS55DMFYJCO5EFSVGX5O3LJ}

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	2026-07-05T01:07:24.675342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

860c2977a36170913ba42caa6bf5db5a59f41b6ef26a8a8cedb49a879587455a

Aliases

arxiv: 1902.00423 · arxiv_version: 1902.00423v2 · doi: 10.48550/arxiv.1902.00423 · pith_short_12: QYGCS55DMFYJ · pith_short_16: QYGCS55DMFYJCO5E · pith_short_8: QYGCS55D

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/QYGCS55DMFYJCO5EFSVGX5O3LJ \
  | 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: 860c2977a36170913ba42caa6bf5db5a59f41b6ef26a8a8cedb49a879587455a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8b9a8815bc47cda1af1c1bc6e43cfa56e7339cd4262f6d525803e35cdd12903",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-02-01T16:00:34Z",
    "title_canon_sha256": "d40f393f34e28396968b84c0044da30d5c72cb8a6c53b4b6772b9b08bb78fca0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.00423",
    "kind": "arxiv",
    "version": 2
  }
}