Pith Number

pith:4S7BBZ3X

pith:2017:4S7BBZ3X4L54ZTJBFSHSH3TJ6W

not attested not anchored not stored refs pending

Unassisted Quantitative Evaluation Of Despeckling Filters

Alejandro C. Frery, Luis Gomez, Raydonal Ospina

arxiv:1704.05952 v1 · 2017-04-19 · 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{4S7BBZ3X4L54ZTJBFSHSH3TJ6W}

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	2026-05-18T00:46:03.713915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4be10e777e2fbcccd212c8f23ee69f5b3b19a478c2a35a1ac7486cf0beae856

Aliases

arxiv: 1704.05952 · arxiv_version: 1704.05952v1 · doi: 10.48550/arxiv.1704.05952 · pith_short_12: 4S7BBZ3X4L54 · pith_short_16: 4S7BBZ3X4L54ZTJB · pith_short_8: 4S7BBZ3X

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/4S7BBZ3X4L54ZTJBFSHSH3TJ6W \
  | 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: e4be10e777e2fbcccd212c8f23ee69f5b3b19a478c2a35a1ac7486cf0beae856

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b5687afd567bbc79bdca5a40882dcf10975427d6e9af4341ba6b8e98af6ae02",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2017-04-19T23:01:30Z",
    "title_canon_sha256": "0cf0a63272301b8a26555995f3c2a577c2d382463ef65464058b5d50f58511ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.05952",
    "kind": "arxiv",
    "version": 1
  }
}