Pith Number

pith:IM33UQCU

pith:2018:IM33UQCUBBOH5XQA4MCTLHUVK6

not attested not anchored not stored refs pending

Personalized Education at Scale

Evan Cater, Michael Littman, Sam Saarinen

arxiv:1809.10025 v1 · 2018-09-24 · cs.CY · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IM33UQCUBBOH5XQA4MCTLHUVK6}

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	2026-05-18T00:04:42.837635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4337ba4054085c7ede00e305359e9557870ebd86fb46a7958829099d2bf58f65

Aliases

arxiv: 1809.10025 · arxiv_version: 1809.10025v1 · doi: 10.48550/arxiv.1809.10025 · pith_short_12: IM33UQCUBBOH · pith_short_16: IM33UQCUBBOH5XQA · pith_short_8: IM33UQCU

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/IM33UQCUBBOH5XQA4MCTLHUVK6 \
  | 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: 4337ba4054085c7ede00e305359e9557870ebd86fb46a7958829099d2bf58f65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc21dd4a4f322291c9090b501ed691ba354fbf7698e2c3328629bfb40674c687",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2018-09-24T19:40:25Z",
    "title_canon_sha256": "f6a9871ab41ab5937e1080386f1ae0a525fa5c06d05abf97476a9a8d74b86629"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.10025",
    "kind": "arxiv",
    "version": 1
  }
}