Pith Number

pith:OPVCDKGJ

pith:2026:OPVCDKGJZ3V4ADKCV3QCJZ65MD

not attested not anchored not stored refs pending

Semiparametric Efficient Bilevel Gradient Estimation

Aur\'elien Bibaut, Fares El Khoury, Houssam Zenati, Michael Arbel, Nathan Kallus

arxiv:2605.21341 v1 · 2026-05-20 · stat.ML · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OPVCDKGJZ3V4ADKCV3QCJZ65MD}

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	2026-05-21T02:05:30.067370Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73ea21a8c9ceebc00d42aee024e7dd60cad4d781f2450ef0ad418e9fdc5990fc

Aliases

arxiv: 2605.21341 · arxiv_version: 2605.21341v1 · doi: 10.48550/arxiv.2605.21341 · pith_short_12: OPVCDKGJZ3V4 · pith_short_16: OPVCDKGJZ3V4ADKC · pith_short_8: OPVCDKGJ

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/OPVCDKGJZ3V4ADKCV3QCJZ65MD \
  | 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: 73ea21a8c9ceebc00d42aee024e7dd60cad4d781f2450ef0ad418e9fdc5990fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b1355355ca1a5e80f6c6b829071277c42073cb3d7cb9fecc9d54bc3badb708e",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2026-05-20T16:07:55Z",
    "title_canon_sha256": "1c384c1aa9724458cf25197a2f93caa15dd555ed594250c4e5f5830261991ebd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.21341",
    "kind": "arxiv",
    "version": 1
  }
}