Pith Number

pith:WEEDQWDP

pith:2019:WEEDQWDP36HQ2X6JTIVREZ7YF4

not attested not anchored not stored refs pending

Efficient Video Classification Using Fewer Frames

Mitesh M. Khapra, Mukundhan Srinivasan, Shweta Bhardwaj

arxiv:1902.10640 v1 · 2019-02-27 · 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{WEEDQWDP36HQ2X6JTIVREZ7YF4}

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	2026-05-17T23:52:30.340439Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b10838586fdf8f0d5fc99a2b1267f82f18cae3e3b7f882f523036b70131d80fb

Aliases

arxiv: 1902.10640 · arxiv_version: 1902.10640v1 · doi: 10.48550/arxiv.1902.10640 · pith_short_12: WEEDQWDP36HQ · pith_short_16: WEEDQWDP36HQ2X6J · pith_short_8: WEEDQWDP

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/WEEDQWDP36HQ2X6JTIVREZ7YF4 \
  | 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: b10838586fdf8f0d5fc99a2b1267f82f18cae3e3b7f882f523036b70131d80fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac458d87c6161cb73f36af898a43768720e6141e522a71e5f469f09a3d487872",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-02-27T17:13:17Z",
    "title_canon_sha256": "00b35cc88540e2e4b61d9fe3442e329b9ed9a1ecdb2555e0e3cb18856346f0b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.10640",
    "kind": "arxiv",
    "version": 1
  }
}