Pith Number

pith:HDI527JB

pith:2025:HDI527JBXJYZ4S62P6GL5WJEAN

not attested not anchored not stored refs pending

Scratch Copilot: Supporting Youth Creative Coding with AI

Amy J. Ko, Stefania Druga

arxiv:2505.03867 v1 · 2025-05-06 · cs.HC · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HDI527JBXJYZ4S62P6GL5WJEAN}

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	2026-07-05T10:59:32.851809Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38d1dd7d21ba719e4bda7f8cbed9240356c5a353e2758af13f32a9474059fdee

Aliases

arxiv: 2505.03867 · arxiv_version: 2505.03867v1 · doi: 10.48550/arxiv.2505.03867 · pith_short_12: HDI527JBXJYZ · pith_short_16: HDI527JBXJYZ4S62 · pith_short_8: HDI527JB

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/HDI527JBXJYZ4S62P6GL5WJEAN \
  | 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: 38d1dd7d21ba719e4bda7f8cbed9240356c5a353e2758af13f32a9474059fdee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "755e7a6375202de80c7fea621b15e3ec44f69ecc32bd3a6d9c3336552000faba",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2025-05-06T17:13:29Z",
    "title_canon_sha256": "7f2b30e810b3f3b57c7ccd17816db0f0c9d4b8b542d53a1b9b38a09662a8520f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.03867",
    "kind": "arxiv",
    "version": 1
  }
}