Pith Number

pith:RTO32HML

pith:2021:RTO32HMLZ5O74QKQ5WGWCDVWMG

not attested not anchored not stored refs pending

4DContrast: Contrastive Learning with Dynamic Correspondences for 3D Scene Understanding

Angela Dai, Matthias Nie{\ss}ner, Yujin Chen

arxiv:2112.02990 v2 · 2021-12-06 · 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{RTO32HMLZ5O74QKQ5WGWCDVWMG}

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	2026-07-05T04:42:32.345745Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8cddbd1d8bcf5dfe4150ed8d610eb661b38ee02b174e101bbd4c3c1c18c60cdc

Aliases

arxiv: 2112.02990 · arxiv_version: 2112.02990v2 · doi: 10.48550/arxiv.2112.02990 · pith_short_12: RTO32HMLZ5O7 · pith_short_16: RTO32HMLZ5O74QKQ · pith_short_8: RTO32HML

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/RTO32HMLZ5O74QKQ5WGWCDVWMG \
  | 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: 8cddbd1d8bcf5dfe4150ed8d610eb661b38ee02b174e101bbd4c3c1c18c60cdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0a58bac1c2604f5e40716976c1892c6dcc3cccac5fb1d61662fee155b09b466",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-12-06T13:09:07Z",
    "title_canon_sha256": "ae8c48ba80c859e9918bfaba3f7b33924da06a798ba815584ffe5d3b9c189e12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.02990",
    "kind": "arxiv",
    "version": 2
  }
}