Pith Number

pith:OPF5KQOY

pith:2018:OPF5KQOY2UX3MZTC3FRISTOXKQ

not attested not anchored not stored refs pending

Design and Evaluation of a Tutor Platform for Personalized Vocabulary Learning

Aditya Vempaty, Akimi Gibson, Jennifer Kotler, Prasenjit Dey, Ravi Kokku, Tamer Abuelsaad, Tammy Humphrey

arxiv:1807.03224 v1 · 2018-07-09 · cs.AI · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OPF5KQOY2UX3MZTC3FRISTOXKQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:11:12.374671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73cbd541d8d52fb66662d962894dd754304d423c48cb0c7076e2e2ec1ce27e50

Aliases

arxiv: 1807.03224 · arxiv_version: 1807.03224v1 · doi: 10.48550/arxiv.1807.03224 · pith_short_12: OPF5KQOY2UX3 · pith_short_16: OPF5KQOY2UX3MZTC · pith_short_8: OPF5KQOY

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/OPF5KQOY2UX3MZTC3FRISTOXKQ \
  | 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: 73cbd541d8d52fb66662d962894dd754304d423c48cb0c7076e2e2ec1ce27e50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc05bf623312c431d522dd9ca39215bb328ece8ca53c6e438c2e86aba0c0e9ce",
    "cross_cats_sorted": [
      "cs.HC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2018-07-09T15:19:22Z",
    "title_canon_sha256": "5c9e40f6b2f06f087c4aa79a882ae2b72a7af2928f0ba61ba5a77483c1ab048c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.03224",
    "kind": "arxiv",
    "version": 1
  }
}