{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:HKTE34LUKACEUY6FTSZMC36POQ","short_pith_number":"pith:HKTE34LU","canonical_record":{"source":{"id":"1003.4273","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"quant-ph","submitted_at":"2010-03-22T20:33:02Z","cross_cats_sorted":["physics.class-ph"],"title_canon_sha256":"b0d30470e5213e0e61c00636cc400e0f18f4cbec99ceb587e47d417ee9444fdb","abstract_canon_sha256":"9d6758859121a4415cea046ca7b849600856b9ba75fbfef9781e4afa93d71da4"},"schema_version":"1.0"},"canonical_sha256":"3aa64df17450044a63c59cb2c16fcf74358aff41dd038bbb60e940963c181308","source":{"kind":"arxiv","id":"1003.4273","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.4273","created_at":"2026-05-18T04:26:43Z"},{"alias_kind":"arxiv_version","alias_value":"1003.4273v2","created_at":"2026-05-18T04:26:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.4273","created_at":"2026-05-18T04:26:43Z"},{"alias_kind":"pith_short_12","alias_value":"HKTE34LUKACE","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"HKTE34LUKACEUY6F","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"HKTE34LU","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:HKTE34LUKACEUY6FTSZMC36POQ","target":"record","payload":{"canonical_record":{"source":{"id":"1003.4273","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"quant-ph","submitted_at":"2010-03-22T20:33:02Z","cross_cats_sorted":["physics.class-ph"],"title_canon_sha256":"b0d30470e5213e0e61c00636cc400e0f18f4cbec99ceb587e47d417ee9444fdb","abstract_canon_sha256":"9d6758859121a4415cea046ca7b849600856b9ba75fbfef9781e4afa93d71da4"},"schema_version":"1.0"},"canonical_sha256":"3aa64df17450044a63c59cb2c16fcf74358aff41dd038bbb60e940963c181308","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:26:43.663127Z","signature_b64":"9mGjq1zlJXX6v6zYHBz4PYh9GWOxPSJKz3frQmP9asz/ndus96Nmrg41mIwQJNFJ+6/xpUO70h3UtLQnjM/SDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3aa64df17450044a63c59cb2c16fcf74358aff41dd038bbb60e940963c181308","last_reissued_at":"2026-05-18T04:26:43.662460Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:26:43.662460Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1003.4273","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:26:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6JG8thMXr3PvhYTaSHkX+V5bDlgonRHGoSroY98fLsb5zvH/crVv7g9QFw9/mN92MtotscifQF1Aq+amgzHRCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T01:40:17.029627Z"},"content_sha256":"ca3546fc242379bdfe9b3db526819a7947be4cc69e18d8bef1ed8257daef0ac0","schema_version":"1.0","event_id":"sha256:ca3546fc242379bdfe9b3db526819a7947be4cc69e18d8bef1ed8257daef0ac0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:HKTE34LUKACEUY6FTSZMC36POQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Time-symmetric boundary conditions and quantum foundations","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":["physics.class-ph"],"primary_cat":"quant-ph","authors_text":"Ken Wharton","submitted_at":"2010-03-22T20:33:02Z","abstract_excerpt":"Despite the widely-held premise that initial boundary conditions (BCs) corresponding to measurements/interactions can fully specify a physical subsystem, a literal reading of Hamilton's principle would imply that both initial and final BCs are required (or more generally, a BC on a closed hypersurface in spacetime). Such a time-symmetric perspective of BCs, as applied to classical fields, leads to interesting parallels with quantum theory. This paper will map out some of the consequences of this counter-intuitive premise, as applied to covariant classical fields. The most notable result is the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.4273","kind":"arxiv","version":2},"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":"2026-05-18T04:26:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UuHZIbOdCmy6xfjj0mzkOx/3/rbAmfitpciN/ybrqLTNo1mrXMF26M/OBoXSfVHxsSURPV8NwhgY94sZ1jLxBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T01:40:17.030070Z"},"content_sha256":"d418194de978d59e9a74902fd3b166bc23fdcfd7649ff4dda48072daa063487b","schema_version":"1.0","event_id":"sha256:d418194de978d59e9a74902fd3b166bc23fdcfd7649ff4dda48072daa063487b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HKTE34LUKACEUY6FTSZMC36POQ/bundle.json","state_url":"https://pith.science/pith/HKTE34LUKACEUY6FTSZMC36POQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HKTE34LUKACEUY6FTSZMC36POQ/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":"2026-08-09T01:40:17Z","links":{"resolver":"https://pith.science/pith/HKTE34LUKACEUY6FTSZMC36POQ","bundle":"https://pith.science/pith/HKTE34LUKACEUY6FTSZMC36POQ/bundle.json","state":"https://pith.science/pith/HKTE34LUKACEUY6FTSZMC36POQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HKTE34LUKACEUY6FTSZMC36POQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:HKTE34LUKACEUY6FTSZMC36POQ","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":"9d6758859121a4415cea046ca7b849600856b9ba75fbfef9781e4afa93d71da4","cross_cats_sorted":["physics.class-ph"],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"quant-ph","submitted_at":"2010-03-22T20:33:02Z","title_canon_sha256":"b0d30470e5213e0e61c00636cc400e0f18f4cbec99ceb587e47d417ee9444fdb"},"schema_version":"1.0","source":{"id":"1003.4273","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.4273","created_at":"2026-05-18T04:26:43Z"},{"alias_kind":"arxiv_version","alias_value":"1003.4273v2","created_at":"2026-05-18T04:26:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.4273","created_at":"2026-05-18T04:26:43Z"},{"alias_kind":"pith_short_12","alias_value":"HKTE34LUKACE","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"HKTE34LUKACEUY6F","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"HKTE34LU","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:d418194de978d59e9a74902fd3b166bc23fdcfd7649ff4dda48072daa063487b","target":"graph","created_at":"2026-05-18T04:26:43Z","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":"Despite the widely-held premise that initial boundary conditions (BCs) corresponding to measurements/interactions can fully specify a physical subsystem, a literal reading of Hamilton's principle would imply that both initial and final BCs are required (or more generally, a BC on a closed hypersurface in spacetime). Such a time-symmetric perspective of BCs, as applied to classical fields, leads to interesting parallels with quantum theory. This paper will map out some of the consequences of this counter-intuitive premise, as applied to covariant classical fields. The most notable result is the","authors_text":"Ken Wharton","cross_cats":["physics.class-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"quant-ph","submitted_at":"2010-03-22T20:33:02Z","title":"Time-symmetric boundary conditions and quantum foundations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.4273","kind":"arxiv","version":2},"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:ca3546fc242379bdfe9b3db526819a7947be4cc69e18d8bef1ed8257daef0ac0","target":"record","created_at":"2026-05-18T04:26:43Z","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":"9d6758859121a4415cea046ca7b849600856b9ba75fbfef9781e4afa93d71da4","cross_cats_sorted":["physics.class-ph"],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"quant-ph","submitted_at":"2010-03-22T20:33:02Z","title_canon_sha256":"b0d30470e5213e0e61c00636cc400e0f18f4cbec99ceb587e47d417ee9444fdb"},"schema_version":"1.0","source":{"id":"1003.4273","kind":"arxiv","version":2}},"canonical_sha256":"3aa64df17450044a63c59cb2c16fcf74358aff41dd038bbb60e940963c181308","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3aa64df17450044a63c59cb2c16fcf74358aff41dd038bbb60e940963c181308","first_computed_at":"2026-05-18T04:26:43.662460Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:26:43.662460Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9mGjq1zlJXX6v6zYHBz4PYh9GWOxPSJKz3frQmP9asz/ndus96Nmrg41mIwQJNFJ+6/xpUO70h3UtLQnjM/SDw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:26:43.663127Z","signed_message":"canonical_sha256_bytes"},"source_id":"1003.4273","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ca3546fc242379bdfe9b3db526819a7947be4cc69e18d8bef1ed8257daef0ac0","sha256:d418194de978d59e9a74902fd3b166bc23fdcfd7649ff4dda48072daa063487b"],"state_sha256":"af760453ac248aef3c4de4a12afdfbeee407cc4fe863bce148724ea7980f6d35"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dcHKm5TtbSlopbFwFVrNArUd5klYCtMTpnsgKcx/mhRnLEEi5cSbe5iO50MnijNU3LGkMoIwJAVC6blUHXt1Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T01:40:17.035094Z","bundle_sha256":"ce8d4c98bca065af40746d1084af2973a3fe534d14d17d997bd5d340e2c04690"}}