Pith Number

pith:5MBUPVHU

pith:2018:5MBUPVHUPLLCKKZHXD7KPY6DZO

not attested not anchored not stored refs pending

Relational Equivalence Proofs Between Imperative and MapReduce Algorithms

Alexander Weigl, Bernhard Beckert, Mattias Ulbrich, Moritz Kiefer, Peter Sanders, Timo Bingmann

arxiv:1801.08766 v1 · 2018-01-26 · cs.LO · cs.PL · 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{5MBUPVHUPLLCKKZHXD7KPY6DZO}

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	2026-05-18T00:24:22.010683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb0347d4f47ad6252b27b8fea7e3c3cbb3cf80a980c72561bca57136c77aecc3

Aliases

arxiv: 1801.08766 · arxiv_version: 1801.08766v1 · doi: 10.48550/arxiv.1801.08766 · pith_short_12: 5MBUPVHUPLLC · pith_short_16: 5MBUPVHUPLLCKKZH · pith_short_8: 5MBUPVHU

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/5MBUPVHUPLLCKKZHXD7KPY6DZO \
  | 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: eb0347d4f47ad6252b27b8fea7e3c3cbb3cf80a980c72561bca57136c77aecc3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "792dd66a121157261029ad8e4b7ff018c13660e1658cd96ec6f4be9de4f8f655",
    "cross_cats_sorted": [
      "cs.PL",
      "cs.SE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-01-26T11:44:15Z",
    "title_canon_sha256": "226cf3db6eb1119c360aa18f77ab4ff5653ebd06028bae923d13fd64c7cab088"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.08766",
    "kind": "arxiv",
    "version": 1
  }
}