pith. sign in
Pith Number

pith:7GVEKFFF

pith:2026:7GVEKFFFMOOMOIKZ6QTHMFRXDN
not attested not anchored not stored refs pending

Black-Box PWPP Is Not Turing-Closed

Pavel Hub\'a\v{c}ek

arxiv:2602.23809 v3 · 2026-02-27 · cs.CC

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{7GVEKFFFMOOMOIKZ6QTHMFRXDN}

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.

Cited by

1 paper in Pith

Receipt and verification
First computed 2026-06-12T01:09:24.163739Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

f9aa4514a5639cc72159f4267616371b4144f3ede5a0bdac43b50fde04cfda3f

Aliases

arxiv: 2602.23809 · arxiv_version: 2602.23809v3 · doi: 10.48550/arxiv.2602.23809 · pith_short_12: 7GVEKFFFMOOM · pith_short_16: 7GVEKFFFMOOMOIKZ · pith_short_8: 7GVEKFFF
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/7GVEKFFFMOOMOIKZ6QTHMFRXDN \
  | 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: f9aa4514a5639cc72159f4267616371b4144f3ede5a0bdac43b50fde04cfda3f
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "446fa2df18a72696c118669c7f2ff0ce4191817c41d655f60e1c96b0fa2d453d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2026-02-27T08:47:33Z",
    "title_canon_sha256": "d93261b31928a36e6ebe90042bc1dc045f8eae5bff5abf206b07b4c77ddb1c37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.23809",
    "kind": "arxiv",
    "version": 3
  }
}