Pith Number

pith:WFWSR5CW

pith:2021:WFWSR5CWC2V4Q3WLHMVZJZENQ3

not attested not anchored not stored refs pending

Towards Unsupervised Sketch-based Image Retrieval

Conghui Hu, Timothy M. Hospedales, Yi-Zhe Song, Yongxin Yang, Yunpeng Li

arxiv:2105.08237 v4 · 2021-05-18 · 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{WFWSR5CWC2V4Q3WLHMVZJZENQ3}

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	2026-07-05T05:17:08.206488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b16d28f45616abc86ecb3b2b94e48d86c03deb4e81f222d2ef85849f64d933db

Aliases

arxiv: 2105.08237 · arxiv_version: 2105.08237v4 · doi: 10.48550/arxiv.2105.08237 · pith_short_12: WFWSR5CWC2V4 · pith_short_16: WFWSR5CWC2V4Q3WL · pith_short_8: WFWSR5CW

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/WFWSR5CWC2V4Q3WLHMVZJZENQ3 \
  | 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: b16d28f45616abc86ecb3b2b94e48d86c03deb4e81f222d2ef85849f64d933db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85b7a86e2ddbc43eeda07b22470f31184b441ba82c7fa7e21ee68f4d4eb6285e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-05-18T02:38:22Z",
    "title_canon_sha256": "5801541b62d8229fdddd3f8d2392b876d0717b98d0fa9cf1691db8c27c80a6d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.08237",
    "kind": "arxiv",
    "version": 4
  }
}