Pith Number

pith:4EB3NRNB

pith:2025:4EB3NRNBAVJ4Z5ZXVNQEOAGRCJ

not attested not anchored not stored refs pending

USAD: End-to-End Human Activity Recognition via Diffusion Model with Spatiotemporal Attention

Chao Li, Hang Xiao, Hanyu Liu, Haotian Tang, Jiarui Li, Ying Yu, Zhifan Yang

arxiv:2507.02827 v2 · 2025-07-03 · cs.CV · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4EB3NRNBAVJ4Z5ZXVNQEOAGRCJ}

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	2026-07-05T11:35:36.110393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e103b6c5a10553ccf737ab604700d1125958a4e4601cfffc8130993d16ad4880

Aliases

arxiv: 2507.02827 · arxiv_version: 2507.02827v2 · doi: 10.48550/arxiv.2507.02827 · pith_short_12: 4EB3NRNBAVJ4 · pith_short_16: 4EB3NRNBAVJ4Z5ZX · pith_short_8: 4EB3NRNB

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/4EB3NRNBAVJ4Z5ZXVNQEOAGRCJ \
  | 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: e103b6c5a10553ccf737ab604700d1125958a4e4601cfffc8130993d16ad4880

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a826fe4a2147cc8c8eb1f9e314f14d47b13a82a1404e8acf69acb36246da586",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2025-07-03T17:38:44Z",
    "title_canon_sha256": "8912c3e4d548f0db1d65423b693d88495447abced9d01931a82c8102c5d7e160"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.02827",
    "kind": "arxiv",
    "version": 2
  }
}