Pith Number

pith:QFI7DHLW

pith:2015:QFI7DHLWVPSDRGXQLAMGVRVOQO

not attested not anchored not stored refs pending

Understanding Intra-Class Knowledge Inside CNN

Antonio Torrabla, Bolei Zhou, Donglai Wei, William Freeman

arxiv:1507.02379 v2 · 2015-07-09 · 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{QFI7DHLWVPSDRGXQLAMGVRVOQO}

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	2026-05-18T01:36:33.029086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8151f19d76abe4389af058186ac6ae8380ec4d959444fe3e8417e8d99765ec8c

Aliases

arxiv: 1507.02379 · arxiv_version: 1507.02379v2 · doi: 10.48550/arxiv.1507.02379 · pith_short_12: QFI7DHLWVPSD · pith_short_16: QFI7DHLWVPSDRGXQ · pith_short_8: QFI7DHLW

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/QFI7DHLWVPSDRGXQLAMGVRVOQO \
  | 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: 8151f19d76abe4389af058186ac6ae8380ec4d959444fe3e8417e8d99765ec8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5614804af6d565d5c520d11a6079c67da8dbc7321a1bd570e641f8f6208b3fbf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-07-09T05:20:43Z",
    "title_canon_sha256": "f40a45179a2bf3f2d60f30bb39bf66f2703e7f17d6efee91e126cde1057a6cc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.02379",
    "kind": "arxiv",
    "version": 2
  }
}