Pith Number

pith:XZ5BL2OC

pith:2016:XZ5BL2OCHSEGURQQR7GFHVKA7V

not attested not anchored not stored refs pending

A Semidefinite Program for Structured Blockmodels

David Choi

arxiv:1611.05407 v1 · 2016-11-16 · math.ST · stat.ML · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XZ5BL2OCHSEGURQQR7GFHVKA7V}

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	2026-05-18T00:58:27.156527Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be7a15e9c23c886a46108fcc53d540fd40d497c45f955be56e0e38abce7a4a5a

Aliases

arxiv: 1611.05407 · arxiv_version: 1611.05407v1 · doi: 10.48550/arxiv.1611.05407 · pith_short_12: XZ5BL2OCHSEG · pith_short_16: XZ5BL2OCHSEGURQQ · pith_short_8: XZ5BL2OC

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/XZ5BL2OCHSEGURQQR7GFHVKA7V \
  | 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: be7a15e9c23c886a46108fcc53d540fd40d497c45f955be56e0e38abce7a4a5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b953ae91eef6b9932ac5bede90dbf28c6a397e3ec7756850b7f604615444d9f6",
    "cross_cats_sorted": [
      "stat.ML",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2016-11-16T19:00:47Z",
    "title_canon_sha256": "39d8ca5cca2bb094f1596a960cad5b22bd6799cd7e24cc90beaa46ad7cdbdb48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.05407",
    "kind": "arxiv",
    "version": 1
  }
}