Pith Number

pith:Q2L3DX53

pith:2021:Q2L3DX53O4AOGRHN4S5B2RJYUO

not attested not anchored not stored refs pending

3rd Place: A Global and Local Dual Retrieval Solution to Facebook AI Image Similarity Challenge

Guoping Gong, Xinlong Sun, Xuyuan Xu, Yang Fang, Yangyang Qin, Yexin Wang

arxiv:2112.02373 v2 · 2021-12-04 · 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{Q2L3DX53O4AOGRHN4S5B2RJYUO}

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	2026-07-05T03:44:15.095050Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8697b1dfbb7700e344ede4ba1d4538a382f70abc99953a95dbe8ea62973862b8

Aliases

arxiv: 2112.02373 · arxiv_version: 2112.02373v2 · doi: 10.48550/arxiv.2112.02373 · pith_short_12: Q2L3DX53O4AO · pith_short_16: Q2L3DX53O4AOGRHN · pith_short_8: Q2L3DX53

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/Q2L3DX53O4AOGRHN4S5B2RJYUO \
  | 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: 8697b1dfbb7700e344ede4ba1d4538a382f70abc99953a95dbe8ea62973862b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4acf7d8dcb0f9b97ff6f551aa053223a99fa40ff15c4301b6b049497289dc903",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-12-04T16:25:24Z",
    "title_canon_sha256": "bf8bc2b1ce429715611c9fbea4c9f41be3b389221a4031d5ee9a592fe693ce48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.02373",
    "kind": "arxiv",
    "version": 2
  }
}