Pith Number

pith:IA5ITT2Q

pith:2016:IA5ITT2Q2TB5XPVRALRX5MNERZ

not attested not anchored not stored refs pending

Evaluation of student proficiency through a multidimensional finite mixture IRT model

Carla Rampichini, Francesco Bartolucci, Leonardo Grilli, Silvia Bacci

arxiv:1609.06465 v1 · 2016-09-21 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IA5ITT2Q2TB5XPVRALRX5MNERZ}

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	2026-05-18T01:04:08.200372Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

403a89cf50d4c3dbbeb102e37eb1a48e6feddf9eb0fc53d095bdf7a4e15b83b4

Aliases

arxiv: 1609.06465 · arxiv_version: 1609.06465v1 · doi: 10.48550/arxiv.1609.06465 · pith_short_12: IA5ITT2Q2TB5 · pith_short_16: IA5ITT2Q2TB5XPVR · pith_short_8: IA5ITT2Q

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/IA5ITT2Q2TB5XPVRALRX5MNERZ \
  | 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: 403a89cf50d4c3dbbeb102e37eb1a48e6feddf9eb0fc53d095bdf7a4e15b83b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5682c6e6d4d3bc02497032864ab6e428f9bdc4fafa0c85f403ca896519322912",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2016-09-21T08:43:25Z",
    "title_canon_sha256": "c356824a5ad37120d9e6722f62fb48a510731cc70595d7f7757bde3dd264422d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.06465",
    "kind": "arxiv",
    "version": 1
  }
}