Pith Number

pith:BQOSA6VD

pith:2020:BQOSA6VDBM4HIDTWGK55NBNLNC

not attested not anchored not stored refs pending

Image Denoising Using Sparsifying Transform Learning and Weighted Singular Values Minimization

Jianwei Zheng, Ping Yang, Qiu Guan, Wanliang Wang, Yanwei Zhao

arxiv:2004.00753 v1 · 2020-04-02 · eess.IV · 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{BQOSA6VDBM4HIDTWGK55NBNLNC}

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	2026-07-05T00:52:20.426728Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c1d207aa30b38740e7632bbd685ab688d1830461ee34661845968ca4123f10a

Aliases

arxiv: 2004.00753 · arxiv_version: 2004.00753v1 · doi: 10.48550/arxiv.2004.00753 · pith_short_12: BQOSA6VDBM4H · pith_short_16: BQOSA6VDBM4HIDTW · pith_short_8: BQOSA6VD

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/BQOSA6VDBM4HIDTWGK55NBNLNC \
  | 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: 0c1d207aa30b38740e7632bbd685ab688d1830461ee34661845968ca4123f10a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c2f73a26a316a43ea691bf40c1aa4297cda61b5d9545872dd296ca8306f5708",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2020-04-02T00:30:29Z",
    "title_canon_sha256": "a1302817bb14e53fed3733151c9f70bae6f85c3ef0e58b15bd3a0831d72ba9f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.00753",
    "kind": "arxiv",
    "version": 1
  }
}