Pith Number

pith:U3PS432V

pith:2020:U3PS432VIYMMVAQBYU76LBVN6G

not attested not anchored not stored refs pending

Dense Contrastive Learning for Self-Supervised Visual Pre-Training

Chunhua Shen, Lei Li, Rufeng Zhang, Tao Kong, Xinlong Wang

arxiv:2011.09157 v2 · 2020-11-18 · 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{U3PS432VIYMMVAQBYU76LBVN6G}

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	2026-07-05T02:28:53.655865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6df2e6f554618ca8201c53fe586adf18143ccf198708fabb562c52b12e8b4f5

Aliases

arxiv: 2011.09157 · arxiv_version: 2011.09157v2 · doi: 10.48550/arxiv.2011.09157 · pith_short_12: U3PS432VIYMM · pith_short_16: U3PS432VIYMMVAQB · pith_short_8: U3PS432V

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/U3PS432VIYMMVAQBYU76LBVN6G \
  | 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: a6df2e6f554618ca8201c53fe586adf18143ccf198708fabb562c52b12e8b4f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f37d630a7c5f32025de8073e1153c978ccf922e5b2266c0d3a3edeeac01bc58",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-11-18T08:42:32Z",
    "title_canon_sha256": "4aa6129a5ea7efd59de985a0994fa73737c3d3e219c3714fdc0fef1e5b39ee66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.09157",
    "kind": "arxiv",
    "version": 2
  }
}