Pith Number

pith:D5YWFSST

pith:2026:D5YWFSSTJUMSLCKI2BQYYSOCTW

not attested not anchored not stored refs pending

Learning Critical Testing Literacy Through Puzzles: an Experience Report

Bart Th. Knaack, Beatriz Mar\'in, Niels Doorn, Tanja E.J. Vos

arxiv:2606.20129 v1 · 2026-06-18 · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D5YWFSSTJUMSLCKI2BQYYSOCTW}

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	2026-06-19T16:13:03.567516Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f7162ca534d19258948d0618c49c29dbaa5702699c2e04e5aa9f0c3a630f3b4

Aliases

arxiv: 2606.20129 · arxiv_version: 2606.20129v1 · doi: 10.48550/arxiv.2606.20129 · pith_short_12: D5YWFSSTJUMS · pith_short_16: D5YWFSSTJUMSLCKI · pith_short_8: D5YWFSST

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/D5YWFSSTJUMSLCKI2BQYYSOCTW \
  | 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: 1f7162ca534d19258948d0618c49c29dbaa5702699c2e04e5aa9f0c3a630f3b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49b04812aac20d2923f0321bc923537dee07177c9770631abcb98fa3d145f379",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-06-18T11:53:00Z",
    "title_canon_sha256": "9a1fdf3460fcca07913bc976075afe61e46d1ffbb3c3e8264e8cf40b5388f938"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.20129",
    "kind": "arxiv",
    "version": 1
  }
}