Pith Number

pith:G45TQ34S

pith:2026:G45TQ34S4UEWVMK4F7453IMUPA

not attested not anchored not stored refs pending

A Minimal Executable Proof for Multi-Language Contract Traceability

Werner Kasselman

arxiv:2605.28546 v1 · 2026-05-27 · 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{G45TQ34S4UEWVMK4F7453IMUPA}

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	2026-05-28T02:04:55.959873Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

373b386f92e5096ab15c2ff9dda194782de05fac6c4be122b9a3ec82701b7b1a

Aliases

arxiv: 2605.28546 · arxiv_version: 2605.28546v1 · doi: 10.48550/arxiv.2605.28546 · pith_short_12: G45TQ34S4UEW · pith_short_16: G45TQ34S4UEWVMK4 · pith_short_8: G45TQ34S

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/G45TQ34S4UEWVMK4F7453IMUPA \
  | 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: 373b386f92e5096ab15c2ff9dda194782de05fac6c4be122b9a3ec82701b7b1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "562c18b8678df2672d6f55494403d81da4282a2b78139d9107d19b48c6644ef0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-05-27T14:37:26Z",
    "title_canon_sha256": "74efc745ce8635472c51cbe80453ceb551a83bf36840e4093124a4dd6bdb1461"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28546",
    "kind": "arxiv",
    "version": 1
  }
}