Pith Number

pith:4QLTBJR5

pith:2025:4QLTBJR5JANT7ZKGPMWZNWMV2V

not attested not anchored not stored refs pending

Uni4D: A Unified Self-Supervised Learning Framework for Point Cloud Videos

Chenyi Zhuang, Hao Feng, Jie Qin, Nicu Sebe, Pan Gao, Zhi Zuo

arxiv:2504.04837 v2 · 2025-04-07 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4QLTBJR5JANT7ZKGPMWZNWMV2V}

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.

Cited by

2 papers in Pith

Diffusion Masked Pretraining for Dynamic Point Cloud

Receipt and verification

First computed	2026-07-05T11:05:42.871026Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e41730a63d481b3fe5467b2d96d995d56871a574dddb5c4052eaa571f8850edc

Aliases

arxiv: 2504.04837 · arxiv_version: 2504.04837v2 · doi: 10.48550/arxiv.2504.04837 · pith_short_12: 4QLTBJR5JANT · pith_short_16: 4QLTBJR5JANT7ZKG · pith_short_8: 4QLTBJR5

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/4QLTBJR5JANT7ZKGPMWZNWMV2V \
  | 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: e41730a63d481b3fe5467b2d96d995d56871a574dddb5c4052eaa571f8850edc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffd9582251f7580dd8c624d089829d992e48dda2da38414f146a8de94b0041b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2025-04-07T08:47:36Z",
    "title_canon_sha256": "1f4f620efbafcf5945cf915e9a8b9f206a4d6ac6980d14326274cf19a1fd650f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.04837",
    "kind": "arxiv",
    "version": 2
  }
}