Pith Number

pith:O42JHGHX

pith:2021:O42JHGHXBOS6D62PZ5X6KPQMYR

not attested not anchored not stored refs pending

Interpretable Knowledge Tracing: Simple and Efficient Student Modeling with Causal Relations

Feida Zhu, Hisashi Kashima, Jill-Jenn Vie, Koh Takeuchi, Sein Minn

arxiv:2112.11209 v1 · 2021-12-15 · cs.CY · cs.AI · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O42JHGHXBOS6D62PZ5X6KPQMYR}

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	2026-07-05T03:42:30.305945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77349398f70ba5e1fb4fcf6fe53e0cc476b085e790017e06800ae6de4aad21a9

Aliases

arxiv: 2112.11209 · arxiv_version: 2112.11209v1 · doi: 10.48550/arxiv.2112.11209 · pith_short_12: O42JHGHXBOS6 · pith_short_16: O42JHGHXBOS6D62P · pith_short_8: O42JHGHX

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/O42JHGHXBOS6D62PZ5X6KPQMYR \
  | 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: 77349398f70ba5e1fb4fcf6fe53e0cc476b085e790017e06800ae6de4aad21a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bde2c65bbf70b292c5ca4919d36e8394a43ecb3334c883b8669110605bfa037e",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2021-12-15T19:05:48Z",
    "title_canon_sha256": "39a3646bb445ae41ca54d6db3b12b0e29d7a38494823b6c50ec0144f796ad7cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.11209",
    "kind": "arxiv",
    "version": 1
  }
}