Pith Number

pith:E27NV75O

pith:1999:E27NV75ORQJCYPRG3DU3HQJUWT

not attested not anchored not stored refs pending

A quantum circuit for OR

Herbert J. Bernstein, Howard Barnum, Lee Spector

arxiv:quant-ph/9907056 v3 · 1999-07-16 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E27NV75ORQJCYPRG3DU3HQJUWT}

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	2026-07-04T14:47:27.449221Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26bedaffae8c122c3e26d8e9b3c134b4c6271f5b43cbc49adbf69ba6aff9c173

Aliases

arxiv: quant-ph/9907056 · arxiv_version: quant-ph/9907056v3 · doi: 10.48550/arxiv.quant-ph/9907056 · pith_short_12: E27NV75ORQJC · pith_short_16: E27NV75ORQJCYPRG · pith_short_8: E27NV75O

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/E27NV75ORQJCYPRG3DU3HQJUWT \
  | 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: 26bedaffae8c122c3e26d8e9b3c134b4c6271f5b43cbc49adbf69ba6aff9c173

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "224ad8113f422819474d4f2eb400571762d85b4495080dc428a5f74233215e50",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1999-07-16T15:00:38Z",
    "title_canon_sha256": "564f05fe9b8f7f94ed89354588347524431ce66a22c8579746744936647ac6d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9907056",
    "kind": "arxiv",
    "version": 3
  }
}