{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:P26Y4FHXB2RQUWV5GWK6D5DXKM","short_pith_number":"pith:P26Y4FHX","canonical_record":{"source":{"id":"1206.2725","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-13T06:22:19Z","cross_cats_sorted":[],"title_canon_sha256":"4d39d3c65381bbd3fdd96e40762ac4bc283d2e5c5a48736e53543d60fba6fbda","abstract_canon_sha256":"9e887a9cb2a20dcad64b09041d17a6957e2a55e683ff01cde8422eea645f83b7"},"schema_version":"1.0"},"canonical_sha256":"7ebd8e14f70ea30a5abd3595e1f4775300f072b063fcd40d94e93c0d3c2c6f9a","source":{"kind":"arxiv","id":"1206.2725","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.2725","created_at":"2026-05-18T03:53:43Z"},{"alias_kind":"arxiv_version","alias_value":"1206.2725v1","created_at":"2026-05-18T03:53:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.2725","created_at":"2026-05-18T03:53:43Z"},{"alias_kind":"pith_short_12","alias_value":"P26Y4FHXB2RQ","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"P26Y4FHXB2RQUWV5","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"P26Y4FHX","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:P26Y4FHXB2RQUWV5GWK6D5DXKM","target":"record","payload":{"canonical_record":{"source":{"id":"1206.2725","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-13T06:22:19Z","cross_cats_sorted":[],"title_canon_sha256":"4d39d3c65381bbd3fdd96e40762ac4bc283d2e5c5a48736e53543d60fba6fbda","abstract_canon_sha256":"9e887a9cb2a20dcad64b09041d17a6957e2a55e683ff01cde8422eea645f83b7"},"schema_version":"1.0"},"canonical_sha256":"7ebd8e14f70ea30a5abd3595e1f4775300f072b063fcd40d94e93c0d3c2c6f9a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:53:43.233409Z","signature_b64":"oMpxncFnyIOjl1Rny0FhTuJOFX7LgfDDd2MVbacrxCH/gZW4XD+Ueh3x67+CB2c2mOXII9Vv9FvT+AhcKwFoDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7ebd8e14f70ea30a5abd3595e1f4775300f072b063fcd40d94e93c0d3c2c6f9a","last_reissued_at":"2026-05-18T03:53:43.232997Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:53:43.232997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.2725","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:53:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r9qBjOVjJtFmNByeRbFOcq4EObS5pEj+gx9GJ3eptIT8hhiXlU0S8wJxQsFoDvE+nAf9EePMX9iwP+UMX2CvCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:11:00.510376Z"},"content_sha256":"155c84b6f85cb94e0a77a0207d59879cdea6201e8f0e9a1be93f911921e5643e","schema_version":"1.0","event_id":"sha256:155c84b6f85cb94e0a77a0207d59879cdea6201e8f0e9a1be93f911921e5643e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:P26Y4FHXB2RQUWV5GWK6D5DXKM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The preparation problem in nonlinear extensions of quantum theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Eric G. Cavalcanti, Jacques L. Pienaar, Nicolas C. Menicucci","submitted_at":"2012-06-13T06:22:19Z","abstract_excerpt":"Nonlinear modifications to the laws of quantum mechanics have been proposed as a possible way to consistently describe information processing in the presence of closed timelike curves. These have recently generated controversy due to possible exotic information-theoretic effects, including breaking quantum cryptography and radically speeding up both classical and quantum computers. The physical interpretation of such theories, however, is still unclear. We consider a large class of operationally-defined theories that contain \"nonlinear boxes\" and show that operational verifiability without sup"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.2725","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:53:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FzMJJVr38DKvYW1LwEBUTIdrbbjEUCAat7Ztz0wV2MPUPmTTKyU1DWT2uTrrmYWA18+Sph6JJB7AQkzx87gSAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:11:00.510972Z"},"content_sha256":"2d91e00fc12057334bcf8c3c35ca33990d4cf1087ea810256ad393fd643786b9","schema_version":"1.0","event_id":"sha256:2d91e00fc12057334bcf8c3c35ca33990d4cf1087ea810256ad393fd643786b9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P26Y4FHXB2RQUWV5GWK6D5DXKM/bundle.json","state_url":"https://pith.science/pith/P26Y4FHXB2RQUWV5GWK6D5DXKM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P26Y4FHXB2RQUWV5GWK6D5DXKM/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-28T09:11:00Z","links":{"resolver":"https://pith.science/pith/P26Y4FHXB2RQUWV5GWK6D5DXKM","bundle":"https://pith.science/pith/P26Y4FHXB2RQUWV5GWK6D5DXKM/bundle.json","state":"https://pith.science/pith/P26Y4FHXB2RQUWV5GWK6D5DXKM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P26Y4FHXB2RQUWV5GWK6D5DXKM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:P26Y4FHXB2RQUWV5GWK6D5DXKM","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":"9e887a9cb2a20dcad64b09041d17a6957e2a55e683ff01cde8422eea645f83b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-13T06:22:19Z","title_canon_sha256":"4d39d3c65381bbd3fdd96e40762ac4bc283d2e5c5a48736e53543d60fba6fbda"},"schema_version":"1.0","source":{"id":"1206.2725","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.2725","created_at":"2026-05-18T03:53:43Z"},{"alias_kind":"arxiv_version","alias_value":"1206.2725v1","created_at":"2026-05-18T03:53:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.2725","created_at":"2026-05-18T03:53:43Z"},{"alias_kind":"pith_short_12","alias_value":"P26Y4FHXB2RQ","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"P26Y4FHXB2RQUWV5","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"P26Y4FHX","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:2d91e00fc12057334bcf8c3c35ca33990d4cf1087ea810256ad393fd643786b9","target":"graph","created_at":"2026-05-18T03:53:43Z","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":"Nonlinear modifications to the laws of quantum mechanics have been proposed as a possible way to consistently describe information processing in the presence of closed timelike curves. These have recently generated controversy due to possible exotic information-theoretic effects, including breaking quantum cryptography and radically speeding up both classical and quantum computers. The physical interpretation of such theories, however, is still unclear. We consider a large class of operationally-defined theories that contain \"nonlinear boxes\" and show that operational verifiability without sup","authors_text":"Eric G. Cavalcanti, Jacques L. Pienaar, Nicolas C. Menicucci","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-13T06:22:19Z","title":"The preparation problem in nonlinear extensions of quantum theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.2725","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":"sha256:155c84b6f85cb94e0a77a0207d59879cdea6201e8f0e9a1be93f911921e5643e","target":"record","created_at":"2026-05-18T03:53:43Z","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":"9e887a9cb2a20dcad64b09041d17a6957e2a55e683ff01cde8422eea645f83b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-13T06:22:19Z","title_canon_sha256":"4d39d3c65381bbd3fdd96e40762ac4bc283d2e5c5a48736e53543d60fba6fbda"},"schema_version":"1.0","source":{"id":"1206.2725","kind":"arxiv","version":1}},"canonical_sha256":"7ebd8e14f70ea30a5abd3595e1f4775300f072b063fcd40d94e93c0d3c2c6f9a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7ebd8e14f70ea30a5abd3595e1f4775300f072b063fcd40d94e93c0d3c2c6f9a","first_computed_at":"2026-05-18T03:53:43.232997Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:53:43.232997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oMpxncFnyIOjl1Rny0FhTuJOFX7LgfDDd2MVbacrxCH/gZW4XD+Ueh3x67+CB2c2mOXII9Vv9FvT+AhcKwFoDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:53:43.233409Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.2725","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:155c84b6f85cb94e0a77a0207d59879cdea6201e8f0e9a1be93f911921e5643e","sha256:2d91e00fc12057334bcf8c3c35ca33990d4cf1087ea810256ad393fd643786b9"],"state_sha256":"5d812c9dcedec3845c3846cedbf34119e0e01ac7343eb0651c22b2fb5e7578ad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CTzBdGBaUkaLxY0gsH1woXrQ+oG9MsifdFuMkfofZ1aowcDkcY2w47XjoklXpZ2U9rPx3whY1z0r6Dr1zk5sCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T09:11:00.514386Z","bundle_sha256":"7db7458c9c91ac5ae0a9f585bfd5243665597e3426824503b6c452a46832d324"}}