Pith Number

pith:VFRJTNM2

pith:2019:VFRJTNM2LQHFIBWEUG2VGIWFR5

not attested not anchored not stored refs pending

Do Image Classifiers Generalize Across Time?

Achal Dave, Benjamin Recht, Deva Ramanan, Ludwig Schmidt, Rebecca Roelofs, Vaishaal Shankar

arxiv:1906.02168 v3 · 2019-06-05 · cs.LG · cs.CV · 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{VFRJTNM2LQHFIBWEUG2VGIWFR5}

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	2026-07-05T00:24:38.716988Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a96299b59a5c0e5406c4a1b55322c58f6874d5809db133b43957cb3b4c8cfc07

Aliases

arxiv: 1906.02168 · arxiv_version: 1906.02168v3 · doi: 10.48550/arxiv.1906.02168 · pith_short_12: VFRJTNM2LQHF · pith_short_16: VFRJTNM2LQHFIBWE · pith_short_8: VFRJTNM2

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/VFRJTNM2LQHFIBWEUG2VGIWFR5 \
  | 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: a96299b59a5c0e5406c4a1b55322c58f6874d5809db133b43957cb3b4c8cfc07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "412cce3c6460120716ba36035263ff64c5e345245c1015e1f72659899d06ffd6",
    "cross_cats_sorted": [
      "cs.CV",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-06-05T17:55:42Z",
    "title_canon_sha256": "f98e447447fc811fa757ab683bf6b1651a3f5ab1b365613261a3228e7c929278"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.02168",
    "kind": "arxiv",
    "version": 3
  }
}