{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:XHLP73TJQMQ6YODME6K4CKCAWX","short_pith_number":"pith:XHLP73TJ","canonical_record":{"source":{"id":"quant-ph/0606208","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2006-06-25T20:25:40Z","cross_cats_sorted":[],"title_canon_sha256":"e31d7d9698e665a1255aad7282f6cfa444f5b19bf4df8aeb6f9da48ceb49bfe0","abstract_canon_sha256":"dc9240f4a8259d2b189d1dd2395cd29b3763d04aa1f4964fdb03ca5fc23d344c"},"schema_version":"1.0"},"canonical_sha256":"b9d6ffee698321ec386c2795c12840b5fa79566dcc8d96ccef23197390cf0586","source":{"kind":"arxiv","id":"quant-ph/0606208","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0606208","created_at":"2026-05-18T01:37:54Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0606208v1","created_at":"2026-05-18T01:37:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0606208","created_at":"2026-05-18T01:37:54Z"},{"alias_kind":"pith_short_12","alias_value":"XHLP73TJQMQ6","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"XHLP73TJQMQ6YODM","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"XHLP73TJ","created_at":"2026-05-18T12:25:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:XHLP73TJQMQ6YODME6K4CKCAWX","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0606208","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2006-06-25T20:25:40Z","cross_cats_sorted":[],"title_canon_sha256":"e31d7d9698e665a1255aad7282f6cfa444f5b19bf4df8aeb6f9da48ceb49bfe0","abstract_canon_sha256":"dc9240f4a8259d2b189d1dd2395cd29b3763d04aa1f4964fdb03ca5fc23d344c"},"schema_version":"1.0"},"canonical_sha256":"b9d6ffee698321ec386c2795c12840b5fa79566dcc8d96ccef23197390cf0586","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:54.551054Z","signature_b64":"Cffa2SoN6BkigCvKgXMeEDCUqu4MtKReYUuI9ocyoLEzgmDwXcTOeed956y8Qf1rzqKyvhAfHNJPNpk8cuSMCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9d6ffee698321ec386c2795c12840b5fa79566dcc8d96ccef23197390cf0586","last_reissued_at":"2026-05-18T01:37:54.550425Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:54.550425Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0606208","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":"2026-05-18T01:37:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/UUn+YEl9l0G1tkHbxS/j1RY27tQbEhhDk8Pxa+m7c4/L8imfcD7pj5wDfsSm7oQu0GE1RLNPYlWsmJrOc9BCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:27:03.378206Z"},"content_sha256":"f6a1f6892f37d5abd362ddbc53f3c18e473c71e75eef5fdcc9a1b47a3ed22310","schema_version":"1.0","event_id":"sha256:f6a1f6892f37d5abd362ddbc53f3c18e473c71e75eef5fdcc9a1b47a3ed22310"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:XHLP73TJQMQ6YODME6K4CKCAWX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Backward Evolving Quantum States","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Lev Vaidman","submitted_at":"2006-06-25T20:25:40Z","abstract_excerpt":"The basic concept of the two-state vector formalism, which is the time symmetric approach to quantum mechanics, is the backward evolving quantum state. However, due to the time asymmetry of the memory's arrow of time, the possible ways to manipulate a backward evolving quantum state differ from those for a standard, forward evolving quantum state. The similarities and the differences between forward and backward evolving quantum states regarding the no-cloning theorem, nonlocal measurements, and teleportation are discussed. The results are relevant not only in the framework of the two-state ve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0606208","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":"2026-05-18T01:37:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NU5X5Q7QSd3Fj2DoYOjReTczGXU/Z9ZPWEt8xKBh2WQXgYZQF5giidQcZAcZ65tHQwySoh1H989wF2PDq2soDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:27:03.378566Z"},"content_sha256":"c3acf39cfbc10ee60339b8ad14c81b7f9e6fa2d63779f3267cc937b4ca96b8cf","schema_version":"1.0","event_id":"sha256:c3acf39cfbc10ee60339b8ad14c81b7f9e6fa2d63779f3267cc937b4ca96b8cf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XHLP73TJQMQ6YODME6K4CKCAWX/bundle.json","state_url":"https://pith.science/pith/XHLP73TJQMQ6YODME6K4CKCAWX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XHLP73TJQMQ6YODME6K4CKCAWX/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":"2026-06-03T05:27:03Z","links":{"resolver":"https://pith.science/pith/XHLP73TJQMQ6YODME6K4CKCAWX","bundle":"https://pith.science/pith/XHLP73TJQMQ6YODME6K4CKCAWX/bundle.json","state":"https://pith.science/pith/XHLP73TJQMQ6YODME6K4CKCAWX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XHLP73TJQMQ6YODME6K4CKCAWX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:XHLP73TJQMQ6YODME6K4CKCAWX","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":"dc9240f4a8259d2b189d1dd2395cd29b3763d04aa1f4964fdb03ca5fc23d344c","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2006-06-25T20:25:40Z","title_canon_sha256":"e31d7d9698e665a1255aad7282f6cfa444f5b19bf4df8aeb6f9da48ceb49bfe0"},"schema_version":"1.0","source":{"id":"quant-ph/0606208","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0606208","created_at":"2026-05-18T01:37:54Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0606208v1","created_at":"2026-05-18T01:37:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0606208","created_at":"2026-05-18T01:37:54Z"},{"alias_kind":"pith_short_12","alias_value":"XHLP73TJQMQ6","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"XHLP73TJQMQ6YODM","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"XHLP73TJ","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:c3acf39cfbc10ee60339b8ad14c81b7f9e6fa2d63779f3267cc937b4ca96b8cf","target":"graph","created_at":"2026-05-18T01:37:54Z","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":"The basic concept of the two-state vector formalism, which is the time symmetric approach to quantum mechanics, is the backward evolving quantum state. However, due to the time asymmetry of the memory's arrow of time, the possible ways to manipulate a backward evolving quantum state differ from those for a standard, forward evolving quantum state. The similarities and the differences between forward and backward evolving quantum states regarding the no-cloning theorem, nonlocal measurements, and teleportation are discussed. The results are relevant not only in the framework of the two-state ve","authors_text":"Lev Vaidman","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2006-06-25T20:25:40Z","title":"Backward Evolving Quantum States"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0606208","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:f6a1f6892f37d5abd362ddbc53f3c18e473c71e75eef5fdcc9a1b47a3ed22310","target":"record","created_at":"2026-05-18T01:37:54Z","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":"dc9240f4a8259d2b189d1dd2395cd29b3763d04aa1f4964fdb03ca5fc23d344c","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2006-06-25T20:25:40Z","title_canon_sha256":"e31d7d9698e665a1255aad7282f6cfa444f5b19bf4df8aeb6f9da48ceb49bfe0"},"schema_version":"1.0","source":{"id":"quant-ph/0606208","kind":"arxiv","version":1}},"canonical_sha256":"b9d6ffee698321ec386c2795c12840b5fa79566dcc8d96ccef23197390cf0586","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9d6ffee698321ec386c2795c12840b5fa79566dcc8d96ccef23197390cf0586","first_computed_at":"2026-05-18T01:37:54.550425Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:54.550425Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Cffa2SoN6BkigCvKgXMeEDCUqu4MtKReYUuI9ocyoLEzgmDwXcTOeed956y8Qf1rzqKyvhAfHNJPNpk8cuSMCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:54.551054Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0606208","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6a1f6892f37d5abd362ddbc53f3c18e473c71e75eef5fdcc9a1b47a3ed22310","sha256:c3acf39cfbc10ee60339b8ad14c81b7f9e6fa2d63779f3267cc937b4ca96b8cf"],"state_sha256":"c56d02d221f0c89004b325bb4b69dd01b0f355dddbd2bfd1a34ce42005ce2721"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FTnB79cNjvhyD0vTViYTOrWQYs6ywdlps7/mtIVwMiYm6FO7D4GIGTaIsjNGljDxfPCMFbS5115P+ENqXDdjAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T05:27:03.380450Z","bundle_sha256":"4bf75db7ea09d3e0c9809a20d01c847f0bd29e3b99f8e199ceb7e3fedffef437"}}