Pith Number

pith:UC4C4QWI

pith:2022:UC4C4QWIIA4J3C2VZXO3IGWXHC

not attested not anchored not stored refs pending

S2TD: a Separation Logic Verifier that Supports Reasoning of the Absence and Presence of Bugs

Jun Sun, Long H. Pham, Quang Loc Le, Shengchao Qin

arxiv:2209.09327 v1 · 2022-09-19 · 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{UC4C4QWIIA4J3C2VZXO3IGWXHC}

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	2026-07-05T04:58:58.542885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0b82e42c840389d8b55cdddb41ad73889e56daf847e0ec1f679109471eae70a

Aliases

arxiv: 2209.09327 · arxiv_version: 2209.09327v1 · doi: 10.48550/arxiv.2209.09327 · pith_short_12: UC4C4QWIIA4J · pith_short_16: UC4C4QWIIA4J3C2V · pith_short_8: UC4C4QWI

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/UC4C4QWIIA4J3C2VZXO3IGWXHC \
  | 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: a0b82e42c840389d8b55cdddb41ad73889e56daf847e0ec1f679109471eae70a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2256f0d8c8d06def4fbabed25b80c59ff338b60203013105bc58d6bfee985bb",
    "cross_cats_sorted": [
      "cs.SE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2022-09-19T20:07:54Z",
    "title_canon_sha256": "8bb332324a5d2e0a779335164c5488aed52b939d69e8fcec2ee859ace9ab0a88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.09327",
    "kind": "arxiv",
    "version": 1
  }
}