Pith Number

pith:FNHHATRT

pith:2013:FNHHATRTKBN5JNRBOQ5CKOZGD6

not attested not anchored not stored refs pending

Bayesian analysis of dynamic item response models in educational testing

Donald S. Burdick, James O. Berger, Xiaojing Wang

arxiv:1304.4441 v1 · 2013-04-16 · 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{FNHHATRTKBN5JNRBOQ5CKOZGD6}

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	2026-05-18T03:27:53.067838Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b4e704e33505bd4b621743a253b261f80b0211b1b79b26440db8eb72150bace

Aliases

arxiv: 1304.4441 · arxiv_version: 1304.4441v1 · doi: 10.48550/arxiv.1304.4441 · pith_short_12: FNHHATRTKBN5 · pith_short_16: FNHHATRTKBN5JNRB · pith_short_8: FNHHATRT

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/FNHHATRTKBN5JNRBOQ5CKOZGD6 \
  | 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: 2b4e704e33505bd4b621743a253b261f80b0211b1b79b26440db8eb72150bace

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c54b42b5ba5f4d99b20d9cdb76b2849131205e978b7c1d691e11e0ed6e77ee7f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2013-04-16T13:40:19Z",
    "title_canon_sha256": "4d6e0da3e4be0bf60466b826e9494bced1bb07e57b0afb04d9d54e5becbaa301"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.4441",
    "kind": "arxiv",
    "version": 1
  }
}