Pith Number

pith:QJEYRFOI

pith:2026:QJEYRFOIFDFQQ54H3Z34BH2PQC

not attested not anchored not stored refs pending

Two-Tower Quantum Matrix Chain Multiplication: Trading Qubits for Depth

Alessandro Berti, Alessandro Poggiali, Anna Bernasconi, Giacomo Antonioli, Gianna M. Del Corso

arxiv:2607.13191 v1 · 2026-07-14 · 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{QJEYRFOIFDFQQ54H3Z34BH2PQC}

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	2026-07-16T00:22:02.125544Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82498895c828cb087787de77c09f4f809becd728f2de5ddcb186519d50bf4974

Aliases

arxiv: 2607.13191 · arxiv_version: 2607.13191v1 · doi: 10.48550/arxiv.2607.13191 · pith_short_12: QJEYRFOIFDFQ · pith_short_16: QJEYRFOIFDFQQ54H · pith_short_8: QJEYRFOI

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/QJEYRFOIFDFQQ54H3Z34BH2PQC \
  | 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: 82498895c828cb087787de77c09f4f809becd728f2de5ddcb186519d50bf4974

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4155a07f599bd2daeede0a68879cfc62d27a8fc60f1ec635a0e6c6963d2ee190",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-07-14T18:42:40Z",
    "title_canon_sha256": "42e8e7738322cfa7ace8aaf90439631ed6d7d78f7bedecfab23d199b5c085d6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.13191",
    "kind": "arxiv",
    "version": 1
  }
}