Pith Number

pith:WAPZTI7V

pith:2021:WAPZTI7VUBRK7XSCKVTRDCYUMJ

not attested not anchored not stored refs pending

The Perturbed Ferromagnetic Chain: A Tuneable Test of Quantum Hardness in the Transverse-Field Ising Model

Daniel O'Connor, Louis Fry-Bouriaux, Paul Warburton

arxiv:2106.11019 v3 · 2021-06-21 · 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{WAPZTI7VUBRK7XSCKVTRDCYUMJ}

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	2026-07-05T03:56:02.056975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b01f99a3f5a062afde425567118b1462755768dda196b5060214fadf435d75bf

Aliases

arxiv: 2106.11019 · arxiv_version: 2106.11019v3 · doi: 10.48550/arxiv.2106.11019 · pith_short_12: WAPZTI7VUBRK · pith_short_16: WAPZTI7VUBRK7XSC · pith_short_8: WAPZTI7V

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/WAPZTI7VUBRK7XSCKVTRDCYUMJ \
  | 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: b01f99a3f5a062afde425567118b1462755768dda196b5060214fadf435d75bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4a26e6cfa2775f8d73082a5d4054b8da7e1c50e1827b19c0b86b4811ff8a624",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-06-21T12:22:35Z",
    "title_canon_sha256": "aae4d61e6a2a193af17afc5b2de470f3010b182a87bafc752d465666d2fa9483"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.11019",
    "kind": "arxiv",
    "version": 3
  }
}