Pith Number

pith:I7UGCDOF

pith:2018:I7UGCDOFVZIQP3MDN2E5O57DTQ

not attested not anchored not stored refs pending

Dropout Model Evaluation in MOOCs

Christopher Brooks, Josh Gardner

arxiv:1802.06009 v1 · 2018-02-16 · stat.AP · cs.CY · stat.ME · 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{I7UGCDOFVZIQP3MDN2E5O57DTQ}

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	2026-05-18T00:23:10.171796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47e8610dc5ae5107ed836e89d777e39c3b82b800afd89009de18ac28b6502e1c

Aliases

arxiv: 1802.06009 · arxiv_version: 1802.06009v1 · doi: 10.48550/arxiv.1802.06009 · pith_short_12: I7UGCDOFVZIQ · pith_short_16: I7UGCDOFVZIQP3MD · pith_short_8: I7UGCDOF

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/I7UGCDOFVZIQP3MDN2E5O57DTQ \
  | 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: 47e8610dc5ae5107ed836e89d777e39c3b82b800afd89009de18ac28b6502e1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c580a24627e9dba1f49894a7a8b846187ba0c627619af02ae8be332d6f52cc85",
    "cross_cats_sorted": [
      "cs.CY",
      "stat.ME",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2018-02-16T16:13:39Z",
    "title_canon_sha256": "9a9d3c75b0bba69af2277b7d408f452786dbd42213cf60a46d7a38206a02570b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06009",
    "kind": "arxiv",
    "version": 1
  }
}