Pith Number

pith:UOZ4XMVZ

pith:2026:UOZ4XMVZEV5MYCHJIRXWBY43ST

not attested not anchored not stored refs pending

X4Val: Learning Neural Surrogates for Variance-Reduced Policy Evaluation

Apoorva Sharma, Boris Ivanovic, Edward Schmerling, Han Qi, Heng Yang, Marco Pavone, Michael Watson, Rachel Luo, Sushant Veer

arxiv:2606.05159 v1 · 2026-06-03 · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UOZ4XMVZEV5MYCHJIRXWBY43ST}

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	2026-06-04T02:07:54.386760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3b3cbb2b9257acc08e9446f60e39b94cdd9c0713dd8acd116c88d713104d3c6

Aliases

arxiv: 2606.05159 · arxiv_version: 2606.05159v1 · doi: 10.48550/arxiv.2606.05159 · pith_short_12: UOZ4XMVZEV5M · pith_short_16: UOZ4XMVZEV5MYCHJ · pith_short_8: UOZ4XMVZ

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/UOZ4XMVZEV5MYCHJIRXWBY43ST \
  | 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: a3b3cbb2b9257acc08e9446f60e39b94cdd9c0713dd8acd116c88d713104d3c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6a50d33d9ffea48c61153ff36e81042c7222b2de134ab68f867569fb9dfede0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2026-06-03T17:57:09Z",
    "title_canon_sha256": "1289b3fe7c5ebd90800596cabd089e8edc87cb328eeacdf03cffa62558b53a9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.05159",
    "kind": "arxiv",
    "version": 1
  }
}