Pith Number

pith:2SA2KA7X

pith:2021:2SA2KA7X7VAY24QAVE2KJ2WJBN

not attested not anchored not stored refs pending

Steering-based randomness certification with squeezed states and homodyne measurements

Bradley Longstaff, Daniel Cavalcanti, Jonas S. Neergaard-Nielsen, Jonatan Bohr Brask, Marie Ioannou, Mikkel V. Larsen, Nicolas Brunner, Ulrik L. Andersen

arxiv:2111.06186 v2 · 2021-11-11 · 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{2SA2KA7X7VAY24QAVE2KJ2WJBN}

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	2026-07-05T05:19:11.945861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d481a503f7fd418d7200a934a4eac90b43d027ac80b5699a102dd80a58c1779b

Aliases

arxiv: 2111.06186 · arxiv_version: 2111.06186v2 · doi: 10.48550/arxiv.2111.06186 · pith_short_12: 2SA2KA7X7VAY · pith_short_16: 2SA2KA7X7VAY24QA · pith_short_8: 2SA2KA7X

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/2SA2KA7X7VAY24QAVE2KJ2WJBN \
  | 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: d481a503f7fd418d7200a934a4eac90b43d027ac80b5699a102dd80a58c1779b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77bfd925d0b9e2be09902d85d0ad522487cad0eb398d0f809d4bfb61a88264f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-11-11T13:05:18Z",
    "title_canon_sha256": "13b607dd0ea42dc7c14c41a94c2ad320e629db96350a995f1ea864a57942321c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.06186",
    "kind": "arxiv",
    "version": 2
  }
}