Pith Number

pith:GPM6QEYE

pith:2026:GPM6QEYEBD6J6GKBEKWFX5KNOL

not attested not anchored not stored refs pending

Finite-Sample Selected Covariance Spectra in Classical Shadows

Masahito Hayashi

arxiv:2606.00527 v1 · 2026-05-30 · 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{GPM6QEYEBD6J6GKBEKWFX5KNOL}

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	2026-06-02T01:03:57.254037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33d9e8130408fc9f194122ac5bf54d72c397217e734ea47da95fcfea57458e4d

Aliases

arxiv: 2606.00527 · arxiv_version: 2606.00527v1 · doi: 10.48550/arxiv.2606.00527 · pith_short_12: GPM6QEYEBD6J · pith_short_16: GPM6QEYEBD6J6GKB · pith_short_8: GPM6QEYE

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/GPM6QEYEBD6J6GKBEKWFX5KNOL \
  | 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: 33d9e8130408fc9f194122ac5bf54d72c397217e734ea47da95fcfea57458e4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc9c9bf53bda15e8a6dbeeb1d857ca7a0e4283db926cc7dd8ea879ecf22d03b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-05-30T04:46:49Z",
    "title_canon_sha256": "96696c0cc81636a2635e6ae2dea54947d5d799437ef26096c714e70b8d6951c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.00527",
    "kind": "arxiv",
    "version": 1
  }
}