Pith Number

pith:E2QHIMK4

pith:2021:E2QHIMK4INOCKJRGBX3XPTXU3L

not attested not anchored not stored refs pending

Contrastive Spatio-Temporal Pretext Learning for Self-supervised Video Representation

Lai-Man Po, Mengyang Liu, Weifeng Ou, Wing-Yin Yu, Xuyuan Xu, Yexin Wang, Yujia Zhang, Yuzhi Zhao

arxiv:2112.08913 v2 · 2021-12-16 · 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{E2QHIMK4INOCKJRGBX3XPTXU3L}

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	2026-07-05T03:42:06.873588Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26a074315c435c2526260df777cef4dad873ab94b65b3bcd06b251b6460ab17e

Aliases

arxiv: 2112.08913 · arxiv_version: 2112.08913v2 · doi: 10.48550/arxiv.2112.08913 · pith_short_12: E2QHIMK4INOC · pith_short_16: E2QHIMK4INOCKJRG · pith_short_8: E2QHIMK4

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/E2QHIMK4INOCKJRGBX3XPTXU3L \
  | 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: 26a074315c435c2526260df777cef4dad873ab94b65b3bcd06b251b6460ab17e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52dae5a1116a81607c3b119a85f9f9e25093c954a03117f8f346d72577c4ed53",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-12-16T14:31:22Z",
    "title_canon_sha256": "b6c7ea46f96aae393e970a16d39e2c4fd04fdabd4988d3150d6ee4cfe02d545e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.08913",
    "kind": "arxiv",
    "version": 2
  }
}