Pith Number

pith:KUTEZ2NX

pith:2026:KUTEZ2NX2KVVWE6MXTHOO7QXHH

not attested not anchored not stored refs pending

Sparse2Act: Learning Action-Aligned Sparse 3D Representations for Cross-Domain Robot Manipulation

Chang Yu, Chenfanfu Jiang, Siyu Ma, Ying Nian Wu, Yin Yang, Yu Guo, Yunuo Chen

arxiv:2606.12759 v1 · 2026-06-10 · 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{KUTEZ2NX2KVVWE6MXTHOO7QXHH}

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	2026-06-12T01:08:49.656803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55264ce9b7d2ab5b13ccbccee77e1739e22ff920389d8df12f6a04c7deb44698

Aliases

arxiv: 2606.12759 · arxiv_version: 2606.12759v1 · doi: 10.48550/arxiv.2606.12759 · pith_short_12: KUTEZ2NX2KVV · pith_short_16: KUTEZ2NX2KVVWE6M · pith_short_8: KUTEZ2NX

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/KUTEZ2NX2KVVWE6MXTHOO7QXHH \
  | 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: 55264ce9b7d2ab5b13ccbccee77e1739e22ff920389d8df12f6a04c7deb44698

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b09e05f969e0ec0c200d76e85b6778340c5f3d1b5d5122fc69e50908ada189cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2026-06-10T23:56:01Z",
    "title_canon_sha256": "1ce258d0327385ff2e40d9e514c93692fa38cbff7703a662c8111fcae0386719"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.12759",
    "kind": "arxiv",
    "version": 1
  }
}