Pith Number

pith:32XYLNWY

pith:2019:32XYLNWYC3CHZ2W5MJTVYBU6HV

not attested not anchored not stored refs pending

Deriving Cyber-security Requirements for Cyber Physical Systems

Dan Cerys, Howard Shrobe, Patrik Meijer, Paul Robertson, Prakash Manghwani, Robert Laddaga

arxiv:1901.01867 v1 · 2019-01-07 · cs.CR · 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{32XYLNWYC3CHZ2W5MJTVYBU6HV}

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	2026-05-17T23:56:49.453159Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

deaf85b6d816c47ceadd62675c069e3d7498e57428f3649624a098c8fa9f418c

Aliases

arxiv: 1901.01867 · arxiv_version: 1901.01867v1 · doi: 10.48550/arxiv.1901.01867 · pith_short_12: 32XYLNWYC3CH · pith_short_16: 32XYLNWYC3CHZ2W5 · pith_short_8: 32XYLNWY

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/32XYLNWYC3CHZ2W5MJTVYBU6HV \
  | 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: deaf85b6d816c47ceadd62675c069e3d7498e57428f3649624a098c8fa9f418c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3afc754ebce3a31cd004036d7265469d711b772ab55f94ff7f772117b3ffaf44",
    "cross_cats_sorted": [
      "cs.SE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-01-07T15:05:41Z",
    "title_canon_sha256": "9196757b959fc4caa228f4045585f8c0df2afa88a187a92d06f617f08d86be4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.01867",
    "kind": "arxiv",
    "version": 1
  }
}