Pith Number

pith:QZTQIA3B

pith:2005:QZTQIA3BI6LLJSI2NZSLK7UBCA

not attested not anchored not stored refs pending

Quantum Darwinism: Entanglement, branches, and the emergent classicality of redundantly stored quantum information

Robin Blume-Kohout, W. H. Zurek

arxiv:quant-ph/0505031 v2 · 2005-05-06 · 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{QZTQIA3BI6LLJSI2NZSLK7UBCA}

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

Demystifying Objectivity with Operator Algebra Quantum Error Correction

Receipt and verification

First computed	2026-07-04T16:57:33.988122Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86670403614796b4c91a6e64b57e811017b8b7495883c3419d9f8a5dc5ad0645

Aliases

arxiv: quant-ph/0505031 · arxiv_version: quant-ph/0505031v2 · doi: 10.48550/arxiv.quant-ph/0505031 · pith_short_12: QZTQIA3BI6LL · pith_short_16: QZTQIA3BI6LLJSI2 · pith_short_8: QZTQIA3B

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/QZTQIA3BI6LLJSI2NZSLK7UBCA \
  | 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: 86670403614796b4c91a6e64b57e811017b8b7495883c3419d9f8a5dc5ad0645

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edef37f31bcddcd8fff705648399bba8c9101ed37c6f6da0653fa0b1430e3c4a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-05-06T03:23:39Z",
    "title_canon_sha256": "1e1d232dcf9089c7ee11d55e8c11d9b1655d22a0a4b02f28ff86a79b70391d3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0505031",
    "kind": "arxiv",
    "version": 2
  }
}