Pith Number

pith:Q2WSIWQR

pith:2018:Q2WSIWQRMNM7L3BHAMDHB3KWWB

not attested not anchored not stored refs pending

A writer-independent approach for offline signature verification using deep convolutional neural networks features

Adriano L. I. Oliveira, Robert Sabourin, Victor L. F. Souza

arxiv:1807.10755 v1 · 2018-07-26 · cs.CV · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q2WSIWQRMNM7L3BHAMDHB3KWWB}

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	2026-05-18T00:09:37.453013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86ad245a116359f5ec27030670ed56b058b6bf6d82743b80d2abda282fa67278

Aliases

arxiv: 1807.10755 · arxiv_version: 1807.10755v1 · doi: 10.48550/arxiv.1807.10755 · pith_short_12: Q2WSIWQRMNM7 · pith_short_16: Q2WSIWQRMNM7L3BH · pith_short_8: Q2WSIWQR

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/Q2WSIWQRMNM7L3BHAMDHB3KWWB \
  | 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: 86ad245a116359f5ec27030670ed56b058b6bf6d82743b80d2abda282fa67278

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "698a7d3531f27109e75af09ca8981ecb4b0cf3db61bda1ef133a80cdd6a0dbad",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-07-26T22:09:45Z",
    "title_canon_sha256": "0b53cd7f529246e0ef1a79afd9229d450955a906664c159e3bc2a481c8327142"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10755",
    "kind": "arxiv",
    "version": 1
  }
}