Pith Number

pith:FYPV24FS

pith:2021:FYPV24FSF3J3G5MXX4ZSV73IEI

not attested not anchored not stored refs pending

Proving Non-termination by Program Reversal

{\DJ}or{\dj}e \v{Z}ikeli\'c, Ehsan Kafshdar Goharshady, Krishnendu Chatterjee, Petr Novotn\'y

arxiv:2104.01189 v1 · 2021-04-02 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FYPV24FSF3J3G5MXX4ZSV73IEI}

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	2026-07-05T02:28:57.499461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e1f5d70b22ed3b37597bf332aff68220a1ae78a17d9aa1ce368bae21582688a

Aliases

arxiv: 2104.01189 · arxiv_version: 2104.01189v1 · doi: 10.48550/arxiv.2104.01189 · pith_short_12: FYPV24FSF3J3 · pith_short_16: FYPV24FSF3J3G5MX · pith_short_8: FYPV24FS

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/FYPV24FSF3J3G5MXX4ZSV73IEI \
  | 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: 2e1f5d70b22ed3b37597bf332aff68220a1ae78a17d9aa1ce368bae21582688a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96d37d5952a75fc071bafb3e28a96c20f582121102991a336c9691ea5dc22e1c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2021-04-02T18:13:30Z",
    "title_canon_sha256": "5e87074207a0b2c326d9afe57dce5f7c7f81c1f744bb66ce3b2f409133958096"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.01189",
    "kind": "arxiv",
    "version": 1
  }
}