Pith Number

pith:KM4KFIBV

pith:2010:KM4KFIBVBBDAJFMLKZOO4BNSB5

not attested not anchored not stored refs pending

Optimal (v, 4, 2, 1) optical orthogonal codes with small parameters

Svetlana Topalova, Tsonka Baicheva

arxiv:1003.6013 v2 · 2010-03-31 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KM4KFIBVBBDAJFMLKZOO4BNSB5}

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	2026-05-18T04:16:42.320515Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5338a2a035084604958b565cee05b20f64c0461601c24945dfdcad7dcd15b665

Aliases

arxiv: 1003.6013 · arxiv_version: 1003.6013v2 · doi: 10.48550/arxiv.1003.6013 · pith_short_12: KM4KFIBVBBDA · pith_short_16: KM4KFIBVBBDAJFML · pith_short_8: KM4KFIBV

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/KM4KFIBVBBDAJFMLKZOO4BNSB5 \
  | 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: 5338a2a035084604958b565cee05b20f64c0461601c24945dfdcad7dcd15b665

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92b2ff5251e6562c74fed67d24ce25d8589e3c45f8b8229622721c31ddde414f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2010-03-31T10:38:39Z",
    "title_canon_sha256": "9d3222e35e9e5c350386bbc929d57bca6817fb36e5b4f617038970f72620aef6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.6013",
    "kind": "arxiv",
    "version": 2
  }
}