Pith Number

pith:SSD7UJHR

pith:2026:SSD7UJHR55TJZVSCD4UDDZQW46

not attested not anchored not stored refs pending

Encoding Event-B Proof Rules in Prolog: An Interactive Sequent Prover for ProB

Jan Gruteser (Heinrich Heine University D\"usseldorf), Katharina Engels (Heinrich Heine University D\"usseldorf), Michael Leuschel (Heinrich Heine University D\"usseldorf)

arxiv:2607.21191 v1 · 2026-07-23 · cs.LO · cs.AI · 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{SSD7UJHR55TJZVSCD4UDDZQW46}

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	2026-07-24T01:24:18.243892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9487fa24f1ef669cd6421f2831e616e79c47e5f9528ffebc4233fc3cb68e2f07

Aliases

arxiv: 2607.21191 · arxiv_version: 2607.21191v1 · doi: 10.48550/arxiv.2607.21191 · pith_short_12: SSD7UJHR55TJ · pith_short_16: SSD7UJHR55TJZVSC · pith_short_8: SSD7UJHR

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/SSD7UJHR55TJZVSCD4UDDZQW46 \
  | 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: 9487fa24f1ef669cd6421f2831e616e79c47e5f9528ffebc4233fc3cb68e2f07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3753884de6c740da3eb5e3e143abc8c0ff6a5fa7ad9422bf983dcd418ab7df71",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.SE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2026-07-23T11:16:32Z",
    "title_canon_sha256": "407d3d55d3bd37ea2a8d4acdc04e4c94b49d2f966e2fd92748bc12ef2e945888"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.21191",
    "kind": "arxiv",
    "version": 1
  }
}