Pith Number

pith:566ZF7UD

pith:2026:566ZF7UDV7UCCITP3MHIUIRJYG

not attested not anchored not stored refs pending

The Educational Proof Assistant Waterproof in an Introductory Proof Course: Proof Construction and Learning Processes

Jim Portegies, Johan Commelin, Pim Otte, Rogier Bos

arxiv:2606.26809 v1 · 2026-06-25 · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{566ZF7UDV7UCCITP3MHIUIRJYG}

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	2026-06-26T01:16:00.430885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efbd92fe83afe821226fdb0e8a2229c1bef5ed7b80428281e303efa129ac145f

Aliases

arxiv: 2606.26809 · arxiv_version: 2606.26809v1 · doi: 10.48550/arxiv.2606.26809 · pith_short_12: 566ZF7UDV7UC · pith_short_16: 566ZF7UDV7UCCITP · pith_short_8: 566ZF7UD

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/566ZF7UDV7UCCITP3MHIUIRJYG \
  | 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: efbd92fe83afe821226fdb0e8a2229c1bef5ed7b80428281e303efa129ac145f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5903dec9c9835beb04b90a56db06522483c76ebff280c46f35564799a702a9cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2026-06-25T09:50:34Z",
    "title_canon_sha256": "fc5672ac2b3cc44dadf5ea486c73fcbd351f4a8a291f1ee9b5cfbbfa63fc7f21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.26809",
    "kind": "arxiv",
    "version": 1
  }
}