Pith Number

pith:PIXMP7UG

pith:2019:PIXMP7UGWI7LHYKBDW7MMDUYSW

not attested not anchored not stored refs pending

Cross-verification of independent quantum devices

A. Erhard, C. Greganti, I. A. Calafell, J. A. Jones, J. F. Fitzsimons, L. A. Rozema, L. Postler, M. Meth, M. Ringbauer, P. Schindler, P. Walther, R. Blatt, R. Stricker, T. F. Demarie, T. Monz, V. Saggio

arxiv:1905.09790 v2 · 2019-05-23 · 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{PIXMP7UGWI7LHYKBDW7MMDUYSW}

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.

Cited by

1 paper in Pith

Cross-Platform Verification of Intermediate Scale Quantum Devices

Receipt and verification

First computed	2026-07-05T03:14:00.095660Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a2ec7fe86b23eb3e1411dbec60e9895a5717bd15e6868a5493741e099110ffc

Aliases

arxiv: 1905.09790 · arxiv_version: 1905.09790v2 · doi: 10.48550/arxiv.1905.09790 · pith_short_12: PIXMP7UGWI7L · pith_short_16: PIXMP7UGWI7LHYKB · pith_short_8: PIXMP7UG

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/PIXMP7UGWI7LHYKBDW7MMDUYSW \
  | 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: 7a2ec7fe86b23eb3e1411dbec60e9895a5717bd15e6868a5493741e099110ffc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "779d5df4e194ab29af39a2c1874d3494d2250c0adf494670dc3dc0d405540abd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-05-23T17:30:25Z",
    "title_canon_sha256": "19c52ba8ffac36314c62d71c06c640b7c535e4e32979ba088feebe1ae544114a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.09790",
    "kind": "arxiv",
    "version": 2
  }
}