Pith Number

pith:QCMV6AJ7

pith:2021:QCMV6AJ7LRF3CMHMBNEN3NT2YN

not attested not anchored not stored refs pending

Hard-sample Guided Hybrid Contrast Learning for Unsupervised Person Re-Identification

Chuang Zhu, Gang He, Zheng Hu

arxiv:2109.12333 v2 · 2021-09-25 · 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{QCMV6AJ7LRF3CMHMBNEN3NT2YN}

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	2026-07-05T04:22:17.048046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80995f013f5c4bb130ec0b48ddb67ac36c2d2e77e0e8da49120073706227d752

Aliases

arxiv: 2109.12333 · arxiv_version: 2109.12333v2 · doi: 10.48550/arxiv.2109.12333 · pith_short_12: QCMV6AJ7LRF3 · pith_short_16: QCMV6AJ7LRF3CMHM · pith_short_8: QCMV6AJ7

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/QCMV6AJ7LRF3CMHMBNEN3NT2YN \
  | 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: 80995f013f5c4bb130ec0b48ddb67ac36c2d2e77e0e8da49120073706227d752

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "feb88b2f481289e0b740f7aa2809e69f75d65ecc6e8a29e0c60e0a8426e18d1a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-09-25T10:43:37Z",
    "title_canon_sha256": "2369dbdf44d7962e4b04399aa9c250a61033b253a93133e3f7f168a09d739399"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.12333",
    "kind": "arxiv",
    "version": 2
  }
}