Pith Number

pith:257VJNKA

pith:2026:257VJNKALRT2SPKJ3S7LXO5B66

not attested not anchored not stored refs pending

Quantum speedup from nonclassical polarization

Jan Sperling, Laura Ares, Tim A{\ss}brock

arxiv:2603.23124 v3 · 2026-03-24 · 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{257VJNKALRT2SPKJ3S7LXO5B66}

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	2026-08-04T02:09:28.195897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d77f54b5405c67a93d49dcbebbbba1f78faea0fa1dd017cd8a0511dcfe04da6b

Aliases

arxiv: 2603.23124 · arxiv_version: 2603.23124v3 · doi: 10.48550/arxiv.2603.23124 · pith_short_12: 257VJNKALRT2 · pith_short_16: 257VJNKALRT2SPKJ · pith_short_8: 257VJNKA

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/257VJNKALRT2SPKJ3S7LXO5B66 \
  | 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: d77f54b5405c67a93d49dcbebbbba1f78faea0fa1dd017cd8a0511dcfe04da6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53705180996588e89f6034503e6aead1e1872a9f7a9075069893b271849d9301",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-03-24T12:18:42Z",
    "title_canon_sha256": "6c2da1733f4b1ef34c4c530ad4709ff3ff0395ca5f05bb64be730ac70caf8943"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.23124",
    "kind": "arxiv",
    "version": 3
  }
}