Pith Number

pith:LHL4QJPN

pith:2020:LHL4QJPN4ROZ6UBA4YR2WKD2LE

not attested not anchored not stored refs pending

Impossibility of Quantum Virtual Black-Box Obfuscation of Classical Circuits

Christian Schaffner, Gorjan Alagic, Yfke Dulek, Zvika Brakerski

arxiv:2005.06432 v2 · 2020-05-13 · quant-ph · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LHL4QJPN4ROZ6UBA4YR2WKD2LE}

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	2026-07-05T01:53:20.196931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59d7c825ede45d9f5020e623ab287a5919f190631cae5a7380b63709200dfdc2

Aliases

arxiv: 2005.06432 · arxiv_version: 2005.06432v2 · doi: 10.48550/arxiv.2005.06432 · pith_short_12: LHL4QJPN4ROZ · pith_short_16: LHL4QJPN4ROZ6UBA · pith_short_8: LHL4QJPN

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/LHL4QJPN4ROZ6UBA4YR2WKD2LE \
  | 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: 59d7c825ede45d9f5020e623ab287a5919f190631cae5a7380b63709200dfdc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfa7e6789ee1e9abed0d2c727f84a91b75bd2630198e8b0adab123dcf170ab60",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-05-13T17:10:08Z",
    "title_canon_sha256": "cd3663fba91348e7c0b73c3b2860babfeecdd7d92c1322c933b437e52a41ee87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.06432",
    "kind": "arxiv",
    "version": 2
  }
}