Pith Number

pith:RB7JDGJR

pith:2018:RB7JDGJRPQVFB63OTYPXGFKL3U

not attested not anchored not stored refs pending

Safety-Critical Java: Level 2 in Practice

Ana Cavalcanti, Andy Wellings, Matt Luckcuck

arxiv:1805.10710 v1 · 2018-05-27 · 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{RB7JDGJRPQVFB63OTYPXGFKL3U}

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	2026-05-18T00:14:51.619149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

887e9199317c2a50fb6e9e1f73154bdd01d21896ac2e8b4bf7b08ac580c860c2

Aliases

arxiv: 1805.10710 · arxiv_version: 1805.10710v1 · doi: 10.48550/arxiv.1805.10710 · pith_short_12: RB7JDGJRPQVF · pith_short_16: RB7JDGJRPQVFB63O · pith_short_8: RB7JDGJR

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/RB7JDGJRPQVFB63OTYPXGFKL3U \
  | 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: 887e9199317c2a50fb6e9e1f73154bdd01d21896ac2e8b4bf7b08ac580c860c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13abe24df6cf990f0da2dbae3dad3075c0ec038744cfe46c3ee89b5cf320889c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2018-05-27T23:10:03Z",
    "title_canon_sha256": "0c4bda19744196b9a17483331f0bf0126257165ab299ec989bccde0cc6cbccd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.10710",
    "kind": "arxiv",
    "version": 1
  }
}