Pith Number

pith:P2XFGMQB

pith:2019:P2XFGMQBPFRZT4D3USJSZB7ICI

not attested not anchored not stored refs pending

Computational Complexity and the Nature of Quantum Mechanics (Extended version)

Alessandro Facchini, Alessio Benavoli, Marco Zaffalon

arxiv:1902.03513 v1 · 2019-02-09 · quant-ph · cs.CC · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P2XFGMQBPFRZT4D3USJSZB7ICI}

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	2026-05-17T23:54:20.626772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7eae533201796399f07ba4932c87e812043f362ca549dd8e70dfb8adc9468eac

Aliases

arxiv: 1902.03513 · arxiv_version: 1902.03513v1 · doi: 10.48550/arxiv.1902.03513 · pith_short_12: P2XFGMQBPFRZ · pith_short_16: P2XFGMQBPFRZT4D3 · pith_short_8: P2XFGMQB

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/P2XFGMQBPFRZT4D3USJSZB7ICI \
  | 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: 7eae533201796399f07ba4932c87e812043f362ca549dd8e70dfb8adc9468eac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c98dc75e3f4736725e16d459e9d23465c1decc96b5e61963c41d083b882b6dd2",
    "cross_cats_sorted": [
      "cs.CC",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-02-09T23:44:18Z",
    "title_canon_sha256": "c940871f193e7753bd119554e7d4cb135d383e1a956d8718a3a548230903d33f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03513",
    "kind": "arxiv",
    "version": 1
  }
}