Pith Number

pith:K5ZGWLMP

pith:2021:K5ZGWLMPIGMKFNB5MWJLHNZEIW

not attested not anchored not stored refs pending

Enhancing Self-supervised Video Representation Learning via Multi-level Feature Optimization

Dian Li, Huabin Liu, John See, Rui Qian, Shuangrui Ding, Weiyao Lin, Xian Liu, Yuxi Li

arxiv:2108.02183 v2 · 2021-08-04 · 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{K5ZGWLMPIGMKFNB5MWJLHNZEIW}

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	2026-07-05T03:06:34.802138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57726b2d8f4198a2b43d6592b3b72445af30d73dcc3bf2752a1116a32a21fad8

Aliases

arxiv: 2108.02183 · arxiv_version: 2108.02183v2 · doi: 10.48550/arxiv.2108.02183 · pith_short_12: K5ZGWLMPIGMK · pith_short_16: K5ZGWLMPIGMKFNB5 · pith_short_8: K5ZGWLMP

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/K5ZGWLMPIGMKFNB5MWJLHNZEIW \
  | 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: 57726b2d8f4198a2b43d6592b3b72445af30d73dcc3bf2752a1116a32a21fad8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "705470b591caa238b4b6b797078c516e799eac59a47d49c1801da4243b1465a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-08-04T17:16:18Z",
    "title_canon_sha256": "c944a0d3c682857ba7bb43c9321f31eb93853333a0a4c0692fff3289cdd9030e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.02183",
    "kind": "arxiv",
    "version": 2
  }
}