Pith Number

pith:5FUV3Z3J

pith:2019:5FUV3Z3JNZK2RWFNBF5ECTXTZ6

not attested not anchored not stored refs pending

A Comparative Study of Filtering Approaches Applied to Color Archival Document Images

Maroua Mehri, Mohamed Ali Mahjoub, Walid Elhedda

arxiv:1908.09007 v1 · 2019-08-16 · cs.CV · cs.LG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5FUV3Z3JNZK2RWFNBF5ECTXTZ6}

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	2026-07-04T23:59:35.908083Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9695de7696e55a8d8ad097a414ef3cf843f2e1552f61e2ead3edfe3340c90fb

Aliases

arxiv: 1908.09007 · arxiv_version: 1908.09007v1 · doi: 10.48550/arxiv.1908.09007 · pith_short_12: 5FUV3Z3JNZK2 · pith_short_16: 5FUV3Z3JNZK2RWFN · pith_short_8: 5FUV3Z3J

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/5FUV3Z3JNZK2RWFNBF5ECTXTZ6 \
  | 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: e9695de7696e55a8d8ad097a414ef3cf843f2e1552f61e2ead3edfe3340c90fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5544078c2d56bc9f418d2f8e1647999f40cbff2bae017dd91573d31c85e6de80",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-08-16T12:05:14Z",
    "title_canon_sha256": "afdffbc03789e9bf1f71146585dad4305dc04c51dd6d79fe67e144fa065540bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.09007",
    "kind": "arxiv",
    "version": 1
  }
}