Pith Number

pith:TYTEURWG

pith:2012:TYTEURWGT5XGIGC73QEGWHJJEV

not attested not anchored not stored refs pending

Catroid: A Mobile Visual Programming System for Children

Wolfgang Slany

arxiv:1204.6411 v1 · 2012-04-28 · cs.PL · cs.CY · cs.HC · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TYTEURWGT5XGIGC73QEGWHJJEV}

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	2026-05-18T03:56:45.626846Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e264a46c69f6e64185fdc086b1d292566eb64aa21f0cfe1f5a47046f1ecd1ff

Aliases

arxiv: 1204.6411 · arxiv_version: 1204.6411v1 · doi: 10.48550/arxiv.1204.6411 · pith_short_12: TYTEURWGT5XG · pith_short_16: TYTEURWGT5XGIGC7 · pith_short_8: TYTEURWG

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/TYTEURWGT5XGIGC73QEGWHJJEV \
  | 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: 9e264a46c69f6e64185fdc086b1d292566eb64aa21f0cfe1f5a47046f1ecd1ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62816e1efddd3c1efb03501ff87bf13bef35169200ee36e541a196e285aa4803",
    "cross_cats_sorted": [
      "cs.CY",
      "cs.HC",
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2012-04-28T14:26:56Z",
    "title_canon_sha256": "6a7342c7d9e59c5973626e895d588b5fb08f48a47f9e3270ae254da7b52a2dc5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.6411",
    "kind": "arxiv",
    "version": 1
  }
}