Pith Number

pith:UPSRBU2J

pith:2012:UPSRBU2JEGWHXZLOCCUZ4VJRAC

not attested not anchored not stored refs pending

Matrix Tile Analysis

Brendan J. Frey, Inmar Givoni, Vincent Cheung

arxiv:1206.6833 v1 · 2012-06-27 · cs.LG · cs.CE · cs.NA · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UPSRBU2JEGWHXZLOCCUZ4VJRAC}

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	2026-05-18T03:52:15.715501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3e510d34921ac7be56e10a99e553100a687daf139e1548c7c1a4fe42df79078

Aliases

arxiv: 1206.6833 · arxiv_version: 1206.6833v1 · doi: 10.48550/arxiv.1206.6833 · pith_short_12: UPSRBU2JEGWH · pith_short_16: UPSRBU2JEGWHXZLO · pith_short_8: UPSRBU2J

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/UPSRBU2JEGWHXZLOCCUZ4VJRAC \
  | 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: a3e510d34921ac7be56e10a99e553100a687daf139e1548c7c1a4fe42df79078

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57c41b8ec8debf03974e3be52c51394f6be7d48ce54effa523ee9f650ff9b25e",
    "cross_cats_sorted": [
      "cs.CE",
      "cs.NA",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-06-27T16:18:05Z",
    "title_canon_sha256": "58c4d5f4acbd56990af186c5de7bb4930803349a0b986e42fac961c57aa142c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.6833",
    "kind": "arxiv",
    "version": 1
  }
}