Pith Number

pith:LGTJWSDK

pith:2017:LGTJWSDKTOGBUBOUWJLYTOBJVD

not attested not anchored not stored refs pending

A new relationship between block designs

Alexander Shramchenko, Vasilisa Shramchenko

arxiv:1701.08325 v1 · 2017-01-28 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LGTJWSDKTOGBUBOUWJLYTOBJVD}

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	2026-05-18T00:51:54.527499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59a69b486a9b8c1a05d4b25789b829a8c0e69cf5d624826cad82e57f1109cafd

Aliases

arxiv: 1701.08325 · arxiv_version: 1701.08325v1 · doi: 10.48550/arxiv.1701.08325 · pith_short_12: LGTJWSDKTOGB · pith_short_16: LGTJWSDKTOGBUBOU · pith_short_8: LGTJWSDK

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/LGTJWSDKTOGBUBOUWJLYTOBJVD \
  | 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: 59a69b486a9b8c1a05d4b25789b829a8c0e69cf5d624826cad82e57f1109cafd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9611a09d193bbcd8aca132e0a04a1cfa58e45d58c8d13265eb0700c606fff23f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-01-28T22:08:15Z",
    "title_canon_sha256": "d4214e77e5e5e407aa906a17c8a22cdbee2bd05ba245a1310b5a7e1b5586decf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.08325",
    "kind": "arxiv",
    "version": 1
  }
}