Pith Number

pith:PIJ2IIIF

pith:2025:PIJ2IIIFCHOJPD27L6KUBP62DD

not attested not anchored not stored refs pending

A small and interesting architecture for early fault-tolerant quantum computers

Andrew D. Baczewski, Andrew J. Landahl, Jacob S. Nelson

arxiv:2507.20387 v1 · 2025-07-27 · 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{PIJ2IIIFCHOJPD27L6KUBP62DD}

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	2026-07-05T11:44:18.376962Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a13a4210511dc978f5f5f9540bfda18d7b8c6211286e3f13e9f47df90306fac

Aliases

arxiv: 2507.20387 · arxiv_version: 2507.20387v1 · doi: 10.48550/arxiv.2507.20387 · pith_short_12: PIJ2IIIFCHOJ · pith_short_16: PIJ2IIIFCHOJPD27 · pith_short_8: PIJ2IIIF

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/PIJ2IIIFCHOJPD27L6KUBP62DD \
  | 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: 7a13a4210511dc978f5f5f9540bfda18d7b8c6211286e3f13e9f47df90306fac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edbd6edfa8cbb516df095c5b979333e07906dd02984aec2956b93162a3510c3f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-07-27T19:07:12Z",
    "title_canon_sha256": "a7659dd646300f5cf28acc3bed9b79a53bcf13a81c0c1d643139040b37ca2a0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.20387",
    "kind": "arxiv",
    "version": 1
  }
}