Pith Number

pith:37SBL3WN

pith:2026:37SBL3WNVTFH6XDQXC3WMPPNS7

not attested not anchored not stored refs pending

Copper: Unifying Correctness and Performance Specification in Code Generation

Andr\'e Lizardo, Raul Barbosa

arxiv:2607.03130 v1 · 2026-07-03 · 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{37SBL3WNVTFH6XDQXC3WMPPNS7}

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	2026-07-07T01:16:44.035921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfe415eecdacca7f5c70b8b7663ded97cf393533ef62336603a48b8fe6eb638a

Aliases

arxiv: 2607.03130 · arxiv_version: 2607.03130v1 · doi: 10.48550/arxiv.2607.03130 · pith_short_12: 37SBL3WNVTFH · pith_short_16: 37SBL3WNVTFH6XDQ · pith_short_8: 37SBL3WN

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/37SBL3WNVTFH6XDQXC3WMPPNS7 \
  | 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: dfe415eecdacca7f5c70b8b7663ded97cf393533ef62336603a48b8fe6eb638a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5837b4a974abf7989397209de23779e5b5cdb3df03301d35abb639c880824c5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-07-03T09:19:34Z",
    "title_canon_sha256": "ab1efa0c353b19482877b600c7f96900e80612f65d01753b8d11b3a01402e233"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.03130",
    "kind": "arxiv",
    "version": 1
  }
}