Pith Number

pith:3ZU7DOQS

pith:2019:3ZU7DOQSBTF3DCTP6J4DXJZYXQ

not attested not anchored not stored refs pending

Understanding Conditional Compilation Through Integrated Representation of Variability and Source Code

Christina Sixtus, David Baum, Lisa Vogelsberg, Ulrich Eisenecker

arxiv:1908.08375 v1 · 2019-08-20 · 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{3ZU7DOQSBTF3DCTP6J4DXJZYXQ}

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	2026-07-05T02:30:55.382511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de69f1ba120ccbb18a6ff2783ba738bc190df673e52a8e0c0d5d6e083abe4716

Aliases

arxiv: 1908.08375 · arxiv_version: 1908.08375v1 · doi: 10.48550/arxiv.1908.08375 · pith_short_12: 3ZU7DOQSBTF3 · pith_short_16: 3ZU7DOQSBTF3DCTP · pith_short_8: 3ZU7DOQS

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/3ZU7DOQSBTF3DCTP6J4DXJZYXQ \
  | 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: de69f1ba120ccbb18a6ff2783ba738bc190df673e52a8e0c0d5d6e083abe4716

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52a9ae50d48a75ce773352a189d308c16197b96695d537019dedd7e89ade9b7a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2019-08-20T21:35:09Z",
    "title_canon_sha256": "935a17f8eaa8e1b73513411c9496921fe568ae03703152bb6fdf84b1e445bee0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08375",
    "kind": "arxiv",
    "version": 1
  }
}