Pith Number

pith:X6QJYOFB

pith:2025:X6QJYOFBCYI4VWWMLKXUZG77RT

not attested not anchored not stored refs pending

An Active Contour Model for Silhouette Vectorization using B\'ezier Curves

Jean-Michel Morel, Luis Alvarez

arxiv:2505.05132 v2 · 2025-05-08 · cs.GR · cs.CV · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X6QJYOFBCYI4VWWMLKXUZG77RT}

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	2026-07-05T11:01:05.477243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfa09c38a11611cadacc5aaf4c9bff8ce05ce265831fb20f20c126996181cd7f

Aliases

arxiv: 2505.05132 · arxiv_version: 2505.05132v2 · doi: 10.48550/arxiv.2505.05132 · pith_short_12: X6QJYOFBCYI4 · pith_short_16: X6QJYOFBCYI4VWWM · pith_short_8: X6QJYOFB

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/X6QJYOFBCYI4VWWMLKXUZG77RT \
  | 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: bfa09c38a11611cadacc5aaf4c9bff8ce05ce265831fb20f20c126996181cd7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5682332257298578b955d0af0863a15abdfed99cb868b24e7bcc2f814a3f81e",
    "cross_cats_sorted": [
      "cs.CV",
      "math.FA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.GR",
    "submitted_at": "2025-05-08T11:09:49Z",
    "title_canon_sha256": "ede6b18d65f211e4f8a90d0fa737fa019069c2fc63dfccebf879b97d015836a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.05132",
    "kind": "arxiv",
    "version": 2
  }
}