Pith Number

pith:DAPSL42Q

pith:2019:DAPSL42QFTRT7SDRMRPVJTBZFY

not attested not anchored not stored refs pending

Tracking Behavioral Patterns among Students in an Online Educational System

Niklas Hjuler, Stephan Lorenzen, Stephen Alstrup

arxiv:1908.08937 v1 · 2019-08-21 · 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{DAPSL42QFTRT7SDRMRPVJTBZFY}

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	2026-07-04T23:59:25.377975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

181f25f3502ce33fc871645f54cc392e2a2fd7b96dbff12d12e8062ff58b5739

Aliases

arxiv: 1908.08937 · arxiv_version: 1908.08937v1 · doi: 10.48550/arxiv.1908.08937 · pith_short_12: DAPSL42QFTRT · pith_short_16: DAPSL42QFTRT7SDR · pith_short_8: DAPSL42Q

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/DAPSL42QFTRT7SDRMRPVJTBZFY \
  | 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: 181f25f3502ce33fc871645f54cc392e2a2fd7b96dbff12d12e8062ff58b5739

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f3088e054cf77127c5f1ed06ab57f5852362370bb01f375671f7947590a4307",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2019-08-21T13:36:26Z",
    "title_canon_sha256": "80222fc5ec71b61f85a0a33f7ee30987686e6f715a80061d7a3b68c0405c5521"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08937",
    "kind": "arxiv",
    "version": 1
  }
}