Pith Number

pith:R6KM6BO6

pith:2009:R6KM6BO6R2GDVYHKNQZRRROLIO

not attested not anchored not stored refs pending

Hierarchical relational models for document networks

David M. Blei, Jonathan Chang

arxiv:0909.4331 v3 · 2009-09-23 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R6KM6BO6R2GDVYHKNQZRRROLIO}

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	2026-05-18T04:39:50.405140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f94cf05de8e8c3ae0ea6c3318c5cb43af645f0e736bf82e2d5b7c76049ec72c

Aliases

arxiv: 0909.4331 · arxiv_version: 0909.4331v3 · doi: 10.48550/arxiv.0909.4331 · pith_short_12: R6KM6BO6R2GD · pith_short_16: R6KM6BO6R2GDVYHK · pith_short_8: R6KM6BO6

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/R6KM6BO6R2GDVYHKNQZRRROLIO \
  | 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: 8f94cf05de8e8c3ae0ea6c3318c5cb43af645f0e736bf82e2d5b7c76049ec72c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7c8fe9b55c11503f73e1f6d75f75a95647cdf35451d12a2f5720008a75d48a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2009-09-23T22:16:39Z",
    "title_canon_sha256": "135703b82a350f5b2388c63a909c65a67bcecfd00d331f7ce9766fda64f88630"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4331",
    "kind": "arxiv",
    "version": 3
  }
}