Pith Number

pith:XV3A4YUW

pith:2021:XV3A4YUWWDFOO3GADMLLAMTXHZ

not attested not anchored not stored refs pending

Twins: Revisiting the Design of Spatial Attention in Vision Transformers

Bo Zhang, Chunhua Shen, Haibing Ren, Huaxia Xia, Xiangxiang Chu, Xiaolin Wei, Yuqing Wang, Zhi Tian

arxiv:2104.13840 v4 · 2021-04-28 · cs.CV · cs.AI · 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{XV3A4YUWWDFOO3GADMLLAMTXHZ}

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	2026-07-05T03:18:40.513088Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd760e6296b0cae76cc01b16b032773e7020efaf655e18f8d4f5f2c505a52fbf

Aliases

arxiv: 2104.13840 · arxiv_version: 2104.13840v4 · doi: 10.48550/arxiv.2104.13840 · pith_short_12: XV3A4YUWWDFO · pith_short_16: XV3A4YUWWDFOO3GA · pith_short_8: XV3A4YUW

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/XV3A4YUWWDFOO3GADMLLAMTXHZ \
  | 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: bd760e6296b0cae76cc01b16b032773e7020efaf655e18f8d4f5f2c505a52fbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4e46c4eb1282fd88fe293fb0c93533a2595cbc6c8f1dd5b21bd3ececa1ca301",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-04-28T15:42:31Z",
    "title_canon_sha256": "38e1568655133511b577a3054a8d96db38177b866490964897ea79091480c2b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.13840",
    "kind": "arxiv",
    "version": 4
  }
}