Pith Number

pith:47KTFUQY

pith:2026:47KTFUQYF5DNJPNXTDTZU5FLPL

not attested not anchored not stored refs pending

A Prototypical Signature Approach for Writer-Independent Offline Signature Verification

Kecia G. de Moura, Rafael M. O. Cruz, Robert Sabourin

arxiv:2606.18528 v1 · 2026-06-16 · 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{47KTFUQYF5DNJPNXTDTZU5FLPL}

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	2026-06-19T16:11:40.167428Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7d532d2182f46d4bdb798e79a74ab7ac7800c8fd988900652f2b3a7fa46a20b

Aliases

arxiv: 2606.18528 · arxiv_version: 2606.18528v1 · doi: 10.48550/arxiv.2606.18528 · pith_short_12: 47KTFUQYF5DN · pith_short_16: 47KTFUQYF5DNJPNX · pith_short_8: 47KTFUQY

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/47KTFUQYF5DNJPNXTDTZU5FLPL \
  | 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: e7d532d2182f46d4bdb798e79a74ab7ac7800c8fd988900652f2b3a7fa46a20b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f848373582905e07031fe8e5955e378010aaf09aefd4b914569cc414fbf2698c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-06-16T22:48:44Z",
    "title_canon_sha256": "c36178b7e9907f557e16ee1492f30e543fe1b7d80bc2006549da3ab9321fdcc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.18528",
    "kind": "arxiv",
    "version": 1
  }
}