Pith Number

pith:EQS2B4XD

pith:2026:EQS2B4XDKQ3X7U4Q5KWZWEGI5Z

not attested not anchored not stored refs pending

Sample-Efficient Hypergradient Estimation for Decentralized Bi-Level Reinforcement Learning

Akifumi Wachi, Mikoto Kudo, Takumi Tanabe, Youhei Akimoto

arxiv:2603.14867 v4 · 2026-03-16 · cs.LG · cs.AI · cs.GT · cs.MA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EQS2B4XDKQ3X7U4Q5KWZWEGI5Z}

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	2026-06-11T01:09:33.255419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2425a0f2e354377fd390eaad9b10c8ee65f8adf0d69ea31df01ca4a840d995c8

Aliases

arxiv: 2603.14867 · arxiv_version: 2603.14867v4 · doi: 10.48550/arxiv.2603.14867 · pith_short_12: EQS2B4XDKQ3X · pith_short_16: EQS2B4XDKQ3X7U4Q · pith_short_8: EQS2B4XD

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/EQS2B4XDKQ3X7U4Q5KWZWEGI5Z \
  | 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: 2425a0f2e354377fd390eaad9b10c8ee65f8adf0d69ea31df01ca4a840d995c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37607dc17d94dfa0e69ea1441db8a72d1e3c6e6ddd484f045613a9b515c97014",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.GT",
      "cs.MA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-03-16T06:11:00Z",
    "title_canon_sha256": "a67720820a03539b858310649317539068589d7f68a6a47c41b45ee6f48965e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.14867",
    "kind": "arxiv",
    "version": 4
  }
}