Pith Number

pith:2BTCT64Z

pith:2016:2BTCT64Z7TAQOD46LRDQ27GK43

not attested not anchored not stored refs pending

How many faces can be recognized? Performance extrapolation for multi-class classification

Charles Y. Zheng, Rakesh Achanta, Yuval Benjamini

arxiv:1606.05228 v1 · 2016-06-16 · stat.ML · cs.CV · cs.IT · cs.LG · 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{2BTCT64Z7TAQOD46LRDQ27GK43}

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	2026-05-18T01:12:21.773664Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d06629fb99fcc1070f9e5c470d7ccae6f5efa3e3da012b3323680e7e81f51b35

Aliases

arxiv: 1606.05228 · arxiv_version: 1606.05228v1 · doi: 10.48550/arxiv.1606.05228 · pith_short_12: 2BTCT64Z7TAQ · pith_short_16: 2BTCT64Z7TAQOD46 · pith_short_8: 2BTCT64Z

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/2BTCT64Z7TAQOD46LRDQ27GK43 \
  | 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: d06629fb99fcc1070f9e5c470d7ccae6f5efa3e3da012b3323680e7e81f51b35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65fc6abd75e282ec8400107f9e4cb8de069e861e09086694754de4f6b6ae570b",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.IT",
      "cs.LG",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2016-06-16T15:38:20Z",
    "title_canon_sha256": "c5ef244af3495e2608f9d937f0417d06c0f68b12a71cc47acad576d637805c51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.05228",
    "kind": "arxiv",
    "version": 1
  }
}