Pith Number

pith:5HFH6SAD

pith:2020:5HFH6SADILCGI5WVN5MCAKX4YC

not attested not anchored not stored refs pending

Learning efficient structured dictionary for image classification

He-Feng Yin, Jun Sun, Xiao-Jun Wu, Zi-Qi Li

arxiv:2002.03271 v2 · 2020-02-09 · cs.CV · eess.IV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5HFH6SADILCGI5WVN5MCAKX4YC}

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	2026-07-05T01:18:50.685680Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9ca7f480342c46476d56f58202afcc091d0f1903dd8dc17df4c60a327b6ca2c

Aliases

arxiv: 2002.03271 · arxiv_version: 2002.03271v2 · doi: 10.48550/arxiv.2002.03271 · pith_short_12: 5HFH6SADILCG · pith_short_16: 5HFH6SADILCGI5WV · pith_short_8: 5HFH6SAD

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/5HFH6SADILCGI5WVN5MCAKX4YC \
  | 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: e9ca7f480342c46476d56f58202afcc091d0f1903dd8dc17df4c60a327b6ca2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a80a623178e8c518bdc2654b0a560030789f49e43234409fd38a4ca74fac03a",
    "cross_cats_sorted": [
      "eess.IV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-02-09T03:12:49Z",
    "title_canon_sha256": "7e59a507f347b777bd6fe777e56578fb9f8c6cbcfb629b187ca61575266d4220"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.03271",
    "kind": "arxiv",
    "version": 2
  }
}