Pith Number

pith:LORBUD2M

pith:2021:LORBUD2M4YVJ62JPLKZDJALFSP

not attested not anchored not stored refs pending

Unsupervised Part Discovery from Contrastive Reconstruction

Andrea Vedaldi, Christian Rupprecht, Iro Laina, Subhabrata Choudhury

arxiv:2111.06349 v2 · 2021-11-11 · cs.CV · cs.LG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LORBUD2M4YVJ62JPLKZDJALFSP}

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	2026-07-05T04:06:46.956665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ba21a0f4ce62a9f692f5ab234816593e2028c0bbc6bcd5b4bb7ec75c388b4d2

Aliases

arxiv: 2111.06349 · arxiv_version: 2111.06349v2 · doi: 10.48550/arxiv.2111.06349 · pith_short_12: LORBUD2M4YVJ · pith_short_16: LORBUD2M4YVJ62JP · pith_short_8: LORBUD2M

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/LORBUD2M4YVJ62JPLKZDJALFSP \
  | 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: 5ba21a0f4ce62a9f692f5ab234816593e2028c0bbc6bcd5b4bb7ec75c388b4d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4196a9d9e3d33b6aaf2f372c35ea111a1037e3a2d7e8034b103ba31aa638eb4b",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-11-11T17:59:42Z",
    "title_canon_sha256": "35875244c4fd76fdbcbdfb71ced5ed3fea1d7c30cb717c65edd43d238142da79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.06349",
    "kind": "arxiv",
    "version": 2
  }
}