Pith Number

pith:VZWFZYKX

pith:2013:VZWFZYKX4XCKV5J57BLOWGHAQB

not attested not anchored not stored refs pending

SAR Image Despeckling Algorithms using Stochastic Distances and Nonlocal Means

Alejandro C. Frery, Leonardo Torres

arxiv:1308.4338 v1 · 2013-08-20 · cs.IT · cs.CV · cs.GR · math.IT · stat.AP · 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{VZWFZYKX4XCKV5J57BLOWGHAQB}

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	2026-05-18T03:15:33.131635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae6c5ce157e5c4aaf53df856eb18e08057a4e2b548e3237ea4d3ee5ffe63f5a4

Aliases

arxiv: 1308.4338 · arxiv_version: 1308.4338v1 · doi: 10.48550/arxiv.1308.4338 · pith_short_12: VZWFZYKX4XCK · pith_short_16: VZWFZYKX4XCKV5J5 · pith_short_8: VZWFZYKX

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/VZWFZYKX4XCKV5J57BLOWGHAQB \
  | 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: ae6c5ce157e5c4aaf53df856eb18e08057a4e2b548e3237ea4d3ee5ffe63f5a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d0adace888cfd91639d34c453e8f19be49083c3690fa4c99ab937b0c870b234",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.GR",
      "math.IT",
      "stat.AP",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-08-20T15:58:19Z",
    "title_canon_sha256": "90c052c1ee25800969ba0a3ad457dff34f5274649fe10550f3fea4693d1cc277"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4338",
    "kind": "arxiv",
    "version": 1
  }
}