Pith Number

pith:5S6ISSNN

pith:2012:5S6ISSNN4XKRDKGE63D6DR7B3I

not attested not anchored not stored refs pending

KernSmoothIRT: An R Package for Kernel Smoothing in Item Response Theory

Angelo Mazza, Antonio Punzo, Brian McGuire

arxiv:1211.1183 v2 · 2012-11-06 · stat.CO · stat.AP · stat.ME · stat.OT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5S6ISSNN4XKRDKGE63D6DR7B3I}

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	2026-05-18T02:54:14.434417Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ecbc8949ade5d511a8c4f6c7e1c7e1da08946b846ff9513af7101841cd52c0fb

Aliases

arxiv: 1211.1183 · arxiv_version: 1211.1183v2 · doi: 10.48550/arxiv.1211.1183 · pith_short_12: 5S6ISSNN4XKR · pith_short_16: 5S6ISSNN4XKRDKGE · pith_short_8: 5S6ISSNN

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/5S6ISSNN4XKRDKGE63D6DR7B3I \
  | 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: ecbc8949ade5d511a8c4f6c7e1c7e1da08946b846ff9513af7101841cd52c0fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f6757f034051cd732fe1cc51b926991d3f0ccbb7267a63ccebf9ea4e779bfb8",
    "cross_cats_sorted": [
      "stat.AP",
      "stat.ME",
      "stat.OT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2012-11-06T11:26:30Z",
    "title_canon_sha256": "0504516474fb9c2eb20df16b7cf720f86f92d0800206eae5c74f48830556c622"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.1183",
    "kind": "arxiv",
    "version": 2
  }
}