Pith Number

pith:JV6BPGRL

pith:2009:JV6BPGRL37OJEOFT7KGIXNJCV6

not attested not anchored not stored refs pending

Assessment of school performance through a multilevel latent Markov Rasch model

Francesco Bartolucci, Fulvia Pennoni, Giorgio Vittadini

arxiv:0909.4961 v1 · 2009-09-28 · 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{JV6BPGRL37OJEOFT7KGIXNJCV6}

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	2026-05-18T04:02:02.075655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d7c179a2bdfdc9238b3fa8c8bb522afbdfc99390afcc60f925f4e579d83cc51

Aliases

arxiv: 0909.4961 · arxiv_version: 0909.4961v1 · doi: 10.48550/arxiv.0909.4961 · pith_short_12: JV6BPGRL37OJ · pith_short_16: JV6BPGRL37OJEOFT · pith_short_8: JV6BPGRL

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/JV6BPGRL37OJEOFT7KGIXNJCV6 \
  | 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: 4d7c179a2bdfdc9238b3fa8c8bb522afbdfc99390afcc60f925f4e579d83cc51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8dc8b55f13f0cf5d753f47c00404eb96ec579b72e027769ef83e4ed2e057382f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2009-09-28T16:08:13Z",
    "title_canon_sha256": "730780a34e045cb72e756042495ce3c4a73147726fbb7d56f99b708e36db3283"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4961",
    "kind": "arxiv",
    "version": 1
  }
}