Pith Number

pith:SU4OMQNO

pith:2009:SU4OMQNOQ2GK2C2TMXBJCN5IQT

not attested not anchored not stored refs pending

Formalizing Safety Requirements Using Controlling Automata

Gilles Motet, Zhe Chen

arxiv:0905.2364 v1 · 2009-05-14 · cs.SE · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SU4OMQNOQ2GK2C2TMXBJCN5IQT}

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	2026-05-18T00:58:20.176302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9538e641ae868cad0b5365c29137a884cf6e799ebdaf1e005a8a13784bc66706

Aliases

arxiv: 0905.2364 · arxiv_version: 0905.2364v1 · doi: 10.48550/arxiv.0905.2364 · pith_short_12: SU4OMQNOQ2GK · pith_short_16: SU4OMQNOQ2GK2C2T · pith_short_8: SU4OMQNO

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/SU4OMQNOQ2GK2C2TMXBJCN5IQT \
  | 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: 9538e641ae868cad0b5365c29137a884cf6e799ebdaf1e005a8a13784bc66706

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11b64c502c846f35bd83e88a2a07fd5988bb28affaab78ce0f2bc5bca3105f55",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2009-05-14T16:03:51Z",
    "title_canon_sha256": "79f96b9dc83204d9d7e25b0ce7370cf7088c6048ae826d9614646472ee4b22da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2364",
    "kind": "arxiv",
    "version": 1
  }
}