Pith Number

pith:H75M7YKM

pith:2015:H75M7YKMXUEMEFBDGDEZAJPPLG

not attested not anchored not stored refs pending

Effects of GIMP Retinex Filtering Evaluated by the Image Entropy

A.C. Sparavigna, R. Marazzato

arxiv:1512.05653 v1 · 2015-12-16 · 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{H75M7YKMXUEMEFBDGDEZAJPPLG}

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	2026-05-18T01:24:09.538383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ffacfe14cbd08c2142330c99025ef598059310dc5d6800d2566a49655684cfc

Aliases

arxiv: 1512.05653 · arxiv_version: 1512.05653v1 · doi: 10.48550/arxiv.1512.05653 · pith_short_12: H75M7YKMXUEM · pith_short_16: H75M7YKMXUEMEFBD · pith_short_8: H75M7YKM

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/H75M7YKMXUEMEFBDGDEZAJPPLG \
  | 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: 3ffacfe14cbd08c2142330c99025ef598059310dc5d6800d2566a49655684cfc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e61156682d2419ef838f0b5a4cdc6ec9821cfcd4916094a6d385c4ab179ed5f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-12-16T10:45:17Z",
    "title_canon_sha256": "2a589e0ea4ce68eeba2b14136bc15d3334f8a5147827e92d5942510ecbfc84b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.05653",
    "kind": "arxiv",
    "version": 1
  }
}