Pith Number

pith:HR5LCWQF

pith:2021:HR5LCWQF3FGSJ347OKURQUGLXJ

not attested not anchored not stored refs pending

Spatio-temporal Self-Supervised Representation Learning for 3D Point Clouds

Siyuan Huang, Song-Chun Zhu, Yichen Xie, Yixin Zhu

arxiv:2109.00179 v1 · 2021-09-01 · 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{HR5LCWQF3FGSJ347OKURQUGLXJ}

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	2026-07-05T03:10:43.545215Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c7ab15a05d94d24ef9f72a91850cbba65ddac0995f4e4aca2353702f6f2bcae

Aliases

arxiv: 2109.00179 · arxiv_version: 2109.00179v1 · doi: 10.48550/arxiv.2109.00179 · pith_short_12: HR5LCWQF3FGS · pith_short_16: HR5LCWQF3FGSJ347 · pith_short_8: HR5LCWQF

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/HR5LCWQF3FGSJ347OKURQUGLXJ \
  | 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: 3c7ab15a05d94d24ef9f72a91850cbba65ddac0995f4e4aca2353702f6f2bcae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b63690c266baa93f04918a7bc778a68aca97c61b7a8b1b7895186dd0aa66024",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-09-01T04:17:11Z",
    "title_canon_sha256": "905882fcefc9ac803c294fce4d0a717fb1277851e211d15dd030bc691ad2f94c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.00179",
    "kind": "arxiv",
    "version": 1
  }
}