Pith Number

pith:ZPTA3ITF

pith:2019:ZPTA3ITF45QD2M44VTJU7W4DBE

not attested not anchored not stored refs pending

Coarse2Fine: A Two-stage Training Method for Fine-grained Visual Classification

Amir Erfan Eshratifar, David Eigen, Massoud Pedram, Michael Gormish

arxiv:1909.02680 v1 · 2019-09-06 · 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{ZPTA3ITF45QD2M44VTJU7W4DBE}

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	2026-07-05T00:02:41.769688Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbe60da265e7603d339cacd34fdb830921df383e972b0f8f132f9a0ee664e95b

Aliases

arxiv: 1909.02680 · arxiv_version: 1909.02680v1 · doi: 10.48550/arxiv.1909.02680 · pith_short_12: ZPTA3ITF45QD · pith_short_16: ZPTA3ITF45QD2M44 · pith_short_8: ZPTA3ITF

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/ZPTA3ITF45QD2M44VTJU7W4DBE \
  | 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: cbe60da265e7603d339cacd34fdb830921df383e972b0f8f132f9a0ee664e95b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f0300b2bf6cc511b8e84172a9af74ea27020b7abf4c7d5d97f0a90a7646fb1e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-09-06T00:09:17Z",
    "title_canon_sha256": "0c629b10780e40ef5cfa30ecfdfcf2fb3888627a27d608ce18f2374aa54c4a8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.02680",
    "kind": "arxiv",
    "version": 1
  }
}