Pith Number

pith:GQUPI3M2

pith:2010:GQUPI3M2RCV6DX6MTSWCXFFD4O

not attested not anchored not stored refs pending

Optimizing local protocols implementing nonlocal quantum gates

Scott M. Cohen

arxiv:1002.0499 v1 · 2010-02-02 · 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{GQUPI3M2RCV6DX6MTSWCXFFD4O}

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	2026-05-18T02:45:48.952926Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3428f46d9a88abe1dfcc9cac2b94a3e3876f028fc9b6647f2db894c8b1fb99fe

Aliases

arxiv: 1002.0499 · arxiv_version: 1002.0499v1 · doi: 10.48550/arxiv.1002.0499 · pith_short_12: GQUPI3M2RCV6 · pith_short_16: GQUPI3M2RCV6DX6M · pith_short_8: GQUPI3M2

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/GQUPI3M2RCV6DX6MTSWCXFFD4O \
  | 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: 3428f46d9a88abe1dfcc9cac2b94a3e3876f028fc9b6647f2db894c8b1fb99fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed7b1871312fd904410bf0197c35a454990589e5ee49bdd4747a2757897356a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-02-02T14:28:16Z",
    "title_canon_sha256": "f6df0973cb79b46d9bb310e7c14fd821238cef65d3cad556ca64996e7fe7e8a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.0499",
    "kind": "arxiv",
    "version": 1
  }
}