Pith Number

pith:ARERO36D

pith:2015:ARERO36D44K6KZA62A7NBJVRCT

not attested not anchored not stored refs pending

Closing the Gap -- Formally Verifying Dynamically Typed Programs like Statically Typed Ones Using Hoare Logic -- Extended Version --

Bj\"orn Engelmann, Ernst-R\"udiger Olderog, Nils Erik Flick

arxiv:1501.02699 v1 · 2015-01-12 · cs.PL · cs.LO · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ARERO36D44K6KZA62A7NBJVRCT}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:29:37.458072Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0449176fc3e715e5641ed03ed0a6b114ddcce4ab5d89e7cf92e520c667f6a529

Aliases

arxiv: 1501.02699 · arxiv_version: 1501.02699v1 · doi: 10.48550/arxiv.1501.02699 · pith_short_12: ARERO36D44K6 · pith_short_16: ARERO36D44K6KZA6 · pith_short_8: ARERO36D

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/ARERO36D44K6KZA62A7NBJVRCT \
  | 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: 0449176fc3e715e5641ed03ed0a6b114ddcce4ab5d89e7cf92e520c667f6a529

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "677f18a119364c1b83e77bbaad2afa3928db367b6e31a6d52e12ae800981cd4d",
    "cross_cats_sorted": [
      "cs.LO",
      "cs.SE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2015-01-12T16:30:00Z",
    "title_canon_sha256": "2b116554ff41334ad75f59b86723eed51b287fbcdadc2eae5323ca301ea23e85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.02699",
    "kind": "arxiv",
    "version": 1
  }
}