Pith Number

pith:DP2QGR4B

pith:2010:DP2QGR4B2MOZE7ZQNVP6IRZELU

not attested not anchored not stored refs pending

Necessity of Superposition of Macroscopically Distinct States for Quantum Computational Speedup

2), (2) NTT Basic Research Laboratories, Akihisa Ukena (1) ((1) Department of Basic Science, Akira Shimizu (1), NTT), University of Tokyo, Yuichiro Matsuzaki (1

arxiv:1009.5180 v3 · 2010-09-27 · quant-ph · cond-mat.mes-hall

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DP2QGR4B2MOZE7ZQNVP6IRZELU}

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	2026-05-18T03:28:43.166420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1bf5034781d31d927f306d5fe447245d0b92826c9c3ad7eab1c1b3d161191bb6

Aliases

arxiv: 1009.5180 · arxiv_version: 1009.5180v3 · doi: 10.48550/arxiv.1009.5180 · pith_short_12: DP2QGR4B2MOZ · pith_short_16: DP2QGR4B2MOZE7ZQ · pith_short_8: DP2QGR4B

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/DP2QGR4B2MOZE7ZQNVP6IRZELU \
  | 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: 1bf5034781d31d927f306d5fe447245d0b92826c9c3ad7eab1c1b3d161191bb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66df25ff5a111190ba9639ee2878bd8faa9d7728e0b6b0dc255315702af25a5b",
    "cross_cats_sorted": [
      "cond-mat.mes-hall"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-09-27T07:57:28Z",
    "title_canon_sha256": "142140322519db4f0c6bf631710ad8960dbe8820ece91afc57302595e97ddc89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.5180",
    "kind": "arxiv",
    "version": 3
  }
}