Pith Number

pith:COBD37UD

pith:2021:COBD37UDPILSCDLUFL6BUX4IAV

not attested not anchored not stored refs pending

Developing Open Source Educational Resources for Machine Learning and Data Science

Bernd Bischl, David R\"ugamer, Fabian Scheipl, Giuseppe Casalicchio, Ludwig Bothmann, Marius Lindauer, Sven Strickroth

arxiv:2107.14330 v2 · 2021-07-28 · cs.CY · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{COBD37UDPILSCDLUFL6BUX4IAV}

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	2026-07-05T07:19:40.610928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13823dfe837a17210d742afc1a5f88057a5c89b99d0446b83ab99a7434fb8481

Aliases

arxiv: 2107.14330 · arxiv_version: 2107.14330v2 · doi: 10.48550/arxiv.2107.14330 · pith_short_12: COBD37UDPILS · pith_short_16: COBD37UDPILSCDLU · pith_short_8: COBD37UD

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/COBD37UDPILSCDLUFL6BUX4IAV \
  | 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: 13823dfe837a17210d742afc1a5f88057a5c89b99d0446b83ab99a7434fb8481

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85478970835b13719ff96b26bcc665f9946c9c1c75709efa26cfdd9746f107d1",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2021-07-28T10:20:20Z",
    "title_canon_sha256": "1bd3a9fe98c6ae5429e323d38f7326095ef5fe403d2d0e1f1ef0445a60159862"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.14330",
    "kind": "arxiv",
    "version": 2
  }
}