{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:ICNW23SBS6HBJLDHLK6A2DRSX2","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"818c575a54055a1cc0e42a817bf11f02848310b2f476f00fef979e2697df58b2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-02T12:00:43Z","title_canon_sha256":"282f6033386c44b42c31fe5fed267dc647d357f402d9d1770ffe9876e45c9783"},"schema_version":"1.0","source":{"id":"1008.0283","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.0283","created_at":"2026-05-18T04:04:06Z"},{"alias_kind":"arxiv_version","alias_value":"1008.0283v4","created_at":"2026-05-18T04:04:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.0283","created_at":"2026-05-18T04:04:06Z"},{"alias_kind":"pith_short_12","alias_value":"ICNW23SBS6HB","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"ICNW23SBS6HBJLDH","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"ICNW23SB","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:8877934efb34101fd85244b8f60b31e8676adcd8196fcffa551e49d1f784f762","target":"graph","created_at":"2026-05-18T04:04:06Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Multiple observers who interact with environmental encodings of the states of a macroscopic quantum system S as required by quantum Darwinism cannot demonstrate that they are jointly observing S without a joint a priori assumption of a classical boundary separating S from its environment E. Quantum Darwinism cannot, therefore, be regarded as providing a purely quantum-mechanical explanation of the \"emergence\" of classicality.","authors_text":"Chris Fields","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-02T12:00:43Z","title":"Classical system boundaries cannot be determined within quantum Darwinism"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.0283","kind":"arxiv","version":4},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:8d3316f0533915dc9897b2ee8331483be5db79b6d33bdbcb6b7f535464bd64f4","target":"record","created_at":"2026-05-18T04:04:06Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"818c575a54055a1cc0e42a817bf11f02848310b2f476f00fef979e2697df58b2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-02T12:00:43Z","title_canon_sha256":"282f6033386c44b42c31fe5fed267dc647d357f402d9d1770ffe9876e45c9783"},"schema_version":"1.0","source":{"id":"1008.0283","kind":"arxiv","version":4}},"canonical_sha256":"409b6d6e41978e14ac675abc0d0e32bead37afcb547d45cc3b14a0ff08fd63df","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"409b6d6e41978e14ac675abc0d0e32bead37afcb547d45cc3b14a0ff08fd63df","first_computed_at":"2026-05-18T04:04:06.949726Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:04:06.949726Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8zfOnE7ac67jDG64Aa8WBS0aCK524sU2rFNz5si5kRAFsrOIWxEtiVR+yQvi88K3KLzlL8x0s9Wab8I3IU97Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T04:04:06.950276Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.0283","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d3316f0533915dc9897b2ee8331483be5db79b6d33bdbcb6b7f535464bd64f4","sha256:8877934efb34101fd85244b8f60b31e8676adcd8196fcffa551e49d1f784f762"],"state_sha256":"00c3b95d687fe4eabb2e0af36408b845652abd0ace3577053341c6e2020c5f66"}