Pith Number

pith:KH43YDHD

pith:2015:KH43YDHD5VRDPUQPRR2LQLT7OL

not attested not anchored not stored refs pending

Towards correct-by-construction product variants of a software product line: GFML, a formal language for feature modules

Catherine Dubois, Nicole Levy, Thi-Kim-Zung Pham

arxiv:1504.03475 v1 · 2015-04-14 · cs.SE · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KH43YDHD5VRDPUQPRR2LQLT7OL}

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	2026-05-18T02:18:50.812887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51f9bc0ce3ed6237d20f8c74b82e7f72df9570e7d63991c0e2b75e4d9e8cecda

Aliases

arxiv: 1504.03475 · arxiv_version: 1504.03475v1 · doi: 10.48550/arxiv.1504.03475 · pith_short_12: KH43YDHD5VRD · pith_short_16: KH43YDHD5VRDPUQP · pith_short_8: KH43YDHD

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/KH43YDHD5VRDPUQPRR2LQLT7OL \
  | 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: 51f9bc0ce3ed6237d20f8c74b82e7f72df9570e7d63991c0e2b75e4d9e8cecda

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cb22b3452035ae1152dcfc669518d6c977245884ef203dab0e6ecbcff185fad",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2015-04-14T09:56:37Z",
    "title_canon_sha256": "431881561102af364fdea3c1fb9ae09971087157b129d468d7492285d95af30f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03475",
    "kind": "arxiv",
    "version": 1
  }
}