Pith Number

pith:22WXNAEK

pith:2021:22WXNAEKBTMGML4ZM4AEQTP7O7

not attested not anchored not stored refs pending

An Educational System for Personalized Teacher Recommendation in K-12 Online Classrooms

Hang Li, Jiahao Chen, Wenbiao Ding, Zitao Liu

arxiv:2107.07124 v1 · 2021-07-15 · 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{22WXNAEKBTMGML4ZM4AEQTP7O7}

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	2026-07-05T02:58:11.092429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6ad76808a0cd8662f996700484dff77f716412979bcb52b3563f4b49a0d2079

Aliases

arxiv: 2107.07124 · arxiv_version: 2107.07124v1 · doi: 10.48550/arxiv.2107.07124 · pith_short_12: 22WXNAEKBTMG · pith_short_16: 22WXNAEKBTMGML4Z · pith_short_8: 22WXNAEK

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/22WXNAEKBTMGML4ZM4AEQTP7O7 \
  | 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: d6ad76808a0cd8662f996700484dff77f716412979bcb52b3563f4b49a0d2079

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96336ccde6a9b7014a1b0099049f494a0bc9166548fb238d05a6d9eaefe20f9a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2021-07-15T05:04:28Z",
    "title_canon_sha256": "9b06990fca54023f8a022b3e80ff14e019d9b42a974fcd2ddf169acebc6568c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.07124",
    "kind": "arxiv",
    "version": 1
  }
}