Pith Number

pith:CIHSYREY

pith:2026:CIHSYREYA42HDU23UST4B663LA

not attested not anchored not stored refs pending

Contract Based Verification of Non-functional Requirements for Embedded Automotive C Code

Jesper Amilon, Karl Palmskog, Mattias Nyberg, Merlijn Sevenhuijsen

arxiv:2605.21532 v1 · 2026-05-19 · cs.PL · 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{CIHSYREYA42HDU23UST4B663LA}

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	2026-05-22T00:02:27.796565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

120f2c4498073471d35ba4a7c0fbdb580fc63a30f63a7d91e2248baf654664f2

Aliases

arxiv: 2605.21532 · arxiv_version: 2605.21532v1 · doi: 10.48550/arxiv.2605.21532 · pith_short_12: CIHSYREYA42H · pith_short_16: CIHSYREYA42HDU23 · pith_short_8: CIHSYREY

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/CIHSYREYA42HDU23UST4B663LA \
  | 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: 120f2c4498073471d35ba4a7c0fbdb580fc63a30f63a7d91e2248baf654664f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b085d69a12d470725609cce75e3de6b58291a7b916686869c0706076bd9de38",
    "cross_cats_sorted": [
      "cs.SE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2026-05-19T21:12:45Z",
    "title_canon_sha256": "7ede8c5036974381bb3d76f9951610622243fa69b96803d0636658c7d8fc542b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.21532",
    "kind": "arxiv",
    "version": 1
  }
}