Pith Number

pith:QAW55D7Z

pith:2022:QAW55D7ZMDC2HWJ7Z2LSL6NJLW

not attested not anchored not stored refs pending

ProposalContrast: Unsupervised Pre-training for LiDAR-based 3D Object Detection

Cheng-zhong Xu, Dingfu Zhou, Jianbing Shen, Jin Fang, Junbo Yin, Liangjun Zhang, Wenguan Wang

arxiv:2207.12654 v2 · 2022-07-26 · 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{QAW55D7ZMDC2HWJ7Z2LSL6NJLW}

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	2026-07-05T04:54:04.225486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

802dde8ff960c5a3d93fce9725f9a95d80f1341c31275cf37e5147d9b4582278

Aliases

arxiv: 2207.12654 · arxiv_version: 2207.12654v2 · doi: 10.48550/arxiv.2207.12654 · pith_short_12: QAW55D7ZMDC2 · pith_short_16: QAW55D7ZMDC2HWJ7 · pith_short_8: QAW55D7Z

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/QAW55D7ZMDC2HWJ7Z2LSL6NJLW \
  | 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: 802dde8ff960c5a3d93fce9725f9a95d80f1341c31275cf37e5147d9b4582278

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1faf196d43a0d57d81e85c3a78bbcd25fe730ef90f7c7e30d59d0011c41aa7c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2022-07-26T04:45:49Z",
    "title_canon_sha256": "36719d2007c3d7d451382fcf4c5dc538923eb70504ef075b559422e5d813cc6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.12654",
    "kind": "arxiv",
    "version": 2
  }
}