Pith Number

pith:WLFKZP52

pith:2014:WLFKZP52GR6CC6DKKDNOS3OYTN

not attested not anchored not stored refs pending

Online placement test based on Item Response Theory and IMS Global standards

Farid Merrouch, Meriem Hnida, Mohammed Khalidi Idrissi, Samir Bennani

arxiv:1411.5225 v1 · 2014-11-19 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WLFKZP52GR6CC6DKKDNOS3OYTN}

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	2026-05-18T02:34:44.117886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2caacbfba347c21786a50dae96dd89b79556d95a44b69c3285ceb354077198f

Aliases

arxiv: 1411.5225 · arxiv_version: 1411.5225v1 · doi: 10.48550/arxiv.1411.5225 · pith_short_12: WLFKZP52GR6C · pith_short_16: WLFKZP52GR6CC6DK · pith_short_8: WLFKZP52

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/WLFKZP52GR6CC6DKKDNOS3OYTN \
  | 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: b2caacbfba347c21786a50dae96dd89b79556d95a44b69c3285ceb354077198f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca85e404d0a1acc281037d3d4928e198fea942d40dfee243066d8467e0c0c471",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2014-11-19T13:44:36Z",
    "title_canon_sha256": "aec3b89df90404cbbecb5ebe2ba46454ffd5d8d1ba634a99d685a291f9a6cab9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.5225",
    "kind": "arxiv",
    "version": 1
  }
}