{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:IYGN5HXIXIGGQQVT6GZ45MTNUI","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":"da66c1291ded4e76cbe753cb9ce89f019a0bda8315ff25c8967a3985264f97be","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-22T04:19:55Z","title_canon_sha256":"1e552374ab8fdc7b96c8b68bc1474ad4ad700257e5480e80291a41e9b75c2a2c"},"schema_version":"1.0","source":{"id":"2605.23217","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.23217","created_at":"2026-05-25T02:01:44Z"},{"alias_kind":"arxiv_version","alias_value":"2605.23217v1","created_at":"2026-05-25T02:01:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23217","created_at":"2026-05-25T02:01:44Z"},{"alias_kind":"pith_short_12","alias_value":"IYGN5HXIXIGG","created_at":"2026-05-25T02:01:44Z"},{"alias_kind":"pith_short_16","alias_value":"IYGN5HXIXIGGQQVT","created_at":"2026-05-25T02:01:44Z"},{"alias_kind":"pith_short_8","alias_value":"IYGN5HXI","created_at":"2026-05-25T02:01:44Z"}],"graph_snapshots":[{"event_id":"sha256:646a46bf127a40640a0bf5951cacb2436dccfaeea417a954ea761445dc5084b6","target":"graph","created_at":"2026-05-25T02:01:44Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2605.23217/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quantum theory combines density matrices, Born probabilities, tensor-product composites, positive-operator-valued measures (POVMs), and quantum channels. In a finite-dimensional causal operational theory, we prove that two postulates suffice: local input-output statistics identify channels, and every state admits an equivalent-system purification, unique up to reversible dynamics. The full complex quantum formalism follows; every consistent probability rule is realized as a POVM, so measurement no-restriction is derived rather than assumed.","authors_text":"Kenji Nakahira","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-22T04:19:55Z","title":"Two Operational Principles Single Out Quantum Theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23217","kind":"arxiv","version":1},"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":"sha256:71411e1e6b06bd770c16f8b096fa063b137f594121da803d191df72132239e62","target":"record","created_at":"2026-05-25T02:01:44Z","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":"da66c1291ded4e76cbe753cb9ce89f019a0bda8315ff25c8967a3985264f97be","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-22T04:19:55Z","title_canon_sha256":"1e552374ab8fdc7b96c8b68bc1474ad4ad700257e5480e80291a41e9b75c2a2c"},"schema_version":"1.0","source":{"id":"2605.23217","kind":"arxiv","version":1}},"canonical_sha256":"460cde9ee8ba0c6842b3f1b3ceb26da23dcc2e5862fabc70c62191eb77b20db3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"460cde9ee8ba0c6842b3f1b3ceb26da23dcc2e5862fabc70c62191eb77b20db3","first_computed_at":"2026-05-25T02:01:44.094083Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-25T02:01:44.094083Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JhnZMIu8/yAO+Di3qjmp6ci87I05kxad5nB6B/Xiyn0YzHlyCiBqdrFlvLdt1vyY58oXyIIure2ZDhB21EhaDA==","signature_status":"signed_v1","signed_at":"2026-05-25T02:01:44.094642Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.23217","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71411e1e6b06bd770c16f8b096fa063b137f594121da803d191df72132239e62","sha256:646a46bf127a40640a0bf5951cacb2436dccfaeea417a954ea761445dc5084b6"],"state_sha256":"d7429de5766f439bffb3197f968c78c8a25ba6be0ea2d902d55403c2769207f8"}