Pith Number

pith:HIXA2NBL

pith:2022:HIXA2NBLONJMQVE2KPTR5R57QD

not attested not anchored not stored refs pending

A Design of A Simple Yet Effective Exercise Recommendation System in K-12 Online Learning

Jiahao Chen, Qiongqiong Liu, Shuyan Huang, Weiqi Luo, Xiangen Hu, Zitao Liu

arxiv:2206.12291 v1 · 2022-06-23 · cs.IR · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HIXA2NBLONJMQVE2KPTR5R57QD}

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	2026-07-05T04:34:35.102602Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a2e0d342b7352c8549a53e71ec7bf80ea1e8859e17b220ccf8abdbc6194d9f4

Aliases

arxiv: 2206.12291 · arxiv_version: 2206.12291v1 · doi: 10.48550/arxiv.2206.12291 · pith_short_12: HIXA2NBLONJM · pith_short_16: HIXA2NBLONJMQVE2 · pith_short_8: HIXA2NBL

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/HIXA2NBLONJMQVE2KPTR5R57QD \
  | 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: 3a2e0d342b7352c8549a53e71ec7bf80ea1e8859e17b220ccf8abdbc6194d9f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "456882c4d7bd21b394fdc2edc34f42ec7d91251bc879a967901f4ae75068ff73",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2022-06-23T03:08:11Z",
    "title_canon_sha256": "6a1e99e5efd4eef6482fd2305c315e0b20f4b4f4b8391a8a22e38fde5e376c39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2206.12291",
    "kind": "arxiv",
    "version": 1
  }
}