Pith Number

pith:KOPKCJGX

pith:2023:KOPKCJGX2SP4YEPLJTLLHCDUFL

not attested not anchored not stored refs pending

Spuriosity Didn't Kill the Classifier: Using Invariant Predictions to Harness Spurious Features

Andrei Liviu Nicolicioiu, Bernhard Sch\"olkopf, Cian Eastwood, Julius von K\"ugelgen, Marin Vlastelica, Shashank Singh

arxiv:2307.09933 v2 · 2023-07-19 · cs.LG · cs.AI · 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{KOPKCJGX2SP4YEPLJTLLHCDUFL}

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	2026-07-05T07:10:26.600377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

539ea124d7d49fcc11eb4cd6b388742adba36b19d9f0dc776aa76852e5baa805

Aliases

arxiv: 2307.09933 · arxiv_version: 2307.09933v2 · doi: 10.48550/arxiv.2307.09933 · pith_short_12: KOPKCJGX2SP4 · pith_short_16: KOPKCJGX2SP4YEPL · pith_short_8: KOPKCJGX

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/KOPKCJGX2SP4YEPLJTLLHCDUFL \
  | 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: 539ea124d7d49fcc11eb4cd6b388742adba36b19d9f0dc776aa76852e5baa805

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b903df4caa39a5ea4a8af0a0941996a5d6edc8df0f15443ba4ec4f45bf768d0",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CV",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2023-07-19T12:15:06Z",
    "title_canon_sha256": "113db802bec2984565c8f5401e26e0eff0062e6a2ae144eff749047740150a50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2307.09933",
    "kind": "arxiv",
    "version": 2
  }
}