Pith Number

pith:VKNCOY3Z

pith:2018:VKNCOY3ZE6BTJNQTMOOAU62GYK

not attested not anchored not stored refs pending

Smile detection in the wild based on transfer learning

Kenneth E. Barner, Luisa F. Polan\'ia, Xin Guo

arxiv:1802.02185 v1 · 2018-01-17 · 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{VKNCOY3ZE6BTJNQTMOOAU62GYK}

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	2026-05-18T00:24:09.059038Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa9a276379278334b613639c0a7b46c2bd592c20746aec8e0ff10166084383f1

Aliases

arxiv: 1802.02185 · arxiv_version: 1802.02185v1 · doi: 10.48550/arxiv.1802.02185 · pith_short_12: VKNCOY3ZE6BT · pith_short_16: VKNCOY3ZE6BTJNQT · pith_short_8: VKNCOY3Z

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/VKNCOY3ZE6BTJNQTMOOAU62GYK \
  | 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: aa9a276379278334b613639c0a7b46c2bd592c20746aec8e0ff10166084383f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "780570d7a1cd8ce4511bf21f8813abd39be49a462e38e5f71415b6c7594e70f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-01-17T19:58:26Z",
    "title_canon_sha256": "524a901b034a8082b080854fee9bcb29168bc250ae6d188f2c40d91a4f183649"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02185",
    "kind": "arxiv",
    "version": 1
  }
}