{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:7USNMXJSBUKAJ5MEJNVPSIX6W5","short_pith_number":"pith:7USNMXJS","canonical_record":{"source":{"id":"2607.27195","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-29T17:58:04Z","cross_cats_sorted":[],"title_canon_sha256":"5e3d20449667a080351e31b7140e95314c736717890ac40b03de129ee732a855","abstract_canon_sha256":"9ab694ae9f94952706f369c54a73da1812d6b85bffb11e8b30ba983dcc9cb703"},"schema_version":"1.0"},"canonical_sha256":"fd24d65d320d1404f5844b6af922feb7748d177960c2dc624d2dd578ab5fb197","source":{"kind":"arxiv","id":"2607.27195","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.27195","created_at":"2026-07-30T01:24:05Z"},{"alias_kind":"arxiv_version","alias_value":"2607.27195v1","created_at":"2026-07-30T01:24:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.27195","created_at":"2026-07-30T01:24:05Z"},{"alias_kind":"pith_short_12","alias_value":"7USNMXJSBUKA","created_at":"2026-07-30T01:24:05Z"},{"alias_kind":"pith_short_16","alias_value":"7USNMXJSBUKAJ5ME","created_at":"2026-07-30T01:24:05Z"},{"alias_kind":"pith_short_8","alias_value":"7USNMXJS","created_at":"2026-07-30T01:24:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:7USNMXJSBUKAJ5MEJNVPSIX6W5","target":"record","payload":{"canonical_record":{"source":{"id":"2607.27195","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-29T17:58:04Z","cross_cats_sorted":[],"title_canon_sha256":"5e3d20449667a080351e31b7140e95314c736717890ac40b03de129ee732a855","abstract_canon_sha256":"9ab694ae9f94952706f369c54a73da1812d6b85bffb11e8b30ba983dcc9cb703"},"schema_version":"1.0"},"canonical_sha256":"fd24d65d320d1404f5844b6af922feb7748d177960c2dc624d2dd578ab5fb197","receipt":{"kind":"pith_receipt","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd24d65d320d1404f5844b6af922feb7748d177960c2dc624d2dd578ab5fb197","last_reissued_at":"2026-07-30T01:24:05.839571Z","signature_status":"unsigned_v0","first_computed_at":"2026-07-30T01:24:05.839571Z"},"source_kind":"arxiv","source_id":"2607.27195","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":"2026-07-30T01:24:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TF8wy6Sp4V6BTxisRYei/0e0F+paJOACYz4CL3vZPxDP0wPSP3KJQ+SOe6XQduGogzyYR5ZUoxHyMJIe0+M9BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T07:38:37.200524Z"},"content_sha256":"f9bc0996114d700fcb8d8f2cfae1f7bddf299477ba85ba06bb908a86d8a0252b","schema_version":"1.0","event_id":"sha256:f9bc0996114d700fcb8d8f2cfae1f7bddf299477ba85ba06bb908a86d8a0252b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:7USNMXJSBUKAJ5MEJNVPSIX6W5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Very Strong Irreversibility of Quantum Entanglement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Dagmar Bru{\\ss}, Hermann Kampermann, Nikolai Wyderka, Raphael Brinster, Tulja Varun Kondra","submitted_at":"2026-07-29T17:58:04Z","abstract_excerpt":"The manipulation of quantum entanglement is fundamentally irreversible: some mixed entangled states require pure entanglement for their preparation, although no pure entanglement can be recovered from them by local operations and classical communication. This irreversibility is known to persist even under the maximal class of operations that do not generate entanglement, revealing a fundamental distinction between entanglement theory and thermodynamics. We construct cases for which any attempt to restore reversibility necessarily incurs an error that increases exponentially with the number of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.27195","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.27195/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-30T01:24:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mqiWB3515hc3T6Vy5LTXgR7q8XPXNtCjH+Yt0LsP4GclrBRQdToSdhe7sVvXnBXFha4HIurYG6hArSTahNJiCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T07:38:37.201123Z"},"content_sha256":"52daa86d7e3b1e3c30afd48071f52315289366098267208147dbf6b1bc401bb9","schema_version":"1.0","event_id":"sha256:52daa86d7e3b1e3c30afd48071f52315289366098267208147dbf6b1bc401bb9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7USNMXJSBUKAJ5MEJNVPSIX6W5/bundle.json","state_url":"https://pith.science/pith/7USNMXJSBUKAJ5MEJNVPSIX6W5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7USNMXJSBUKAJ5MEJNVPSIX6W5/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":"2026-08-11T07:38:37Z","links":{"resolver":"https://pith.science/pith/7USNMXJSBUKAJ5MEJNVPSIX6W5","bundle":"https://pith.science/pith/7USNMXJSBUKAJ5MEJNVPSIX6W5/bundle.json","state":"https://pith.science/pith/7USNMXJSBUKAJ5MEJNVPSIX6W5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7USNMXJSBUKAJ5MEJNVPSIX6W5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:7USNMXJSBUKAJ5MEJNVPSIX6W5","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":"9ab694ae9f94952706f369c54a73da1812d6b85bffb11e8b30ba983dcc9cb703","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-29T17:58:04Z","title_canon_sha256":"5e3d20449667a080351e31b7140e95314c736717890ac40b03de129ee732a855"},"schema_version":"1.0","source":{"id":"2607.27195","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.27195","created_at":"2026-07-30T01:24:05Z"},{"alias_kind":"arxiv_version","alias_value":"2607.27195v1","created_at":"2026-07-30T01:24:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.27195","created_at":"2026-07-30T01:24:05Z"},{"alias_kind":"pith_short_12","alias_value":"7USNMXJSBUKA","created_at":"2026-07-30T01:24:05Z"},{"alias_kind":"pith_short_16","alias_value":"7USNMXJSBUKAJ5ME","created_at":"2026-07-30T01:24:05Z"},{"alias_kind":"pith_short_8","alias_value":"7USNMXJS","created_at":"2026-07-30T01:24:05Z"}],"graph_snapshots":[{"event_id":"sha256:52daa86d7e3b1e3c30afd48071f52315289366098267208147dbf6b1bc401bb9","target":"graph","created_at":"2026-07-30T01:24:05Z","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/2607.27195/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The manipulation of quantum entanglement is fundamentally irreversible: some mixed entangled states require pure entanglement for their preparation, although no pure entanglement can be recovered from them by local operations and classical communication. This irreversibility is known to persist even under the maximal class of operations that do not generate entanglement, revealing a fundamental distinction between entanglement theory and thermodynamics. We construct cases for which any attempt to restore reversibility necessarily incurs an error that increases exponentially with the number of ","authors_text":"Dagmar Bru{\\ss}, Hermann Kampermann, Nikolai Wyderka, Raphael Brinster, Tulja Varun Kondra","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-29T17:58:04Z","title":"Very Strong Irreversibility of Quantum Entanglement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.27195","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:f9bc0996114d700fcb8d8f2cfae1f7bddf299477ba85ba06bb908a86d8a0252b","target":"record","created_at":"2026-07-30T01:24:05Z","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":"9ab694ae9f94952706f369c54a73da1812d6b85bffb11e8b30ba983dcc9cb703","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-29T17:58:04Z","title_canon_sha256":"5e3d20449667a080351e31b7140e95314c736717890ac40b03de129ee732a855"},"schema_version":"1.0","source":{"id":"2607.27195","kind":"arxiv","version":1}},"canonical_sha256":"fd24d65d320d1404f5844b6af922feb7748d177960c2dc624d2dd578ab5fb197","receipt":{"builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd24d65d320d1404f5844b6af922feb7748d177960c2dc624d2dd578ab5fb197","first_computed_at":"2026-07-30T01:24:05.839571Z","kind":"pith_receipt","last_reissued_at":"2026-07-30T01:24:05.839571Z","receipt_version":"0.3","signature_status":"unsigned_v0"},"source_id":"2607.27195","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f9bc0996114d700fcb8d8f2cfae1f7bddf299477ba85ba06bb908a86d8a0252b","sha256:52daa86d7e3b1e3c30afd48071f52315289366098267208147dbf6b1bc401bb9"],"state_sha256":"2d26f47b73248c22785dcfb98bdcdf4286e96c39cc848b70a68950b21438ca4f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ovNyG/mILd9A8FfEy8MgEhnvUCQn5UR02POyVU/Pvfmsnx+V5zxA/asJfK31xiyJ2uWGJVjDWInvGuBoJhcNCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T07:38:37.206598Z","bundle_sha256":"c2d9eee701b7a3b06e1caee7c3fbf2fb8162de50e3661549d5229fcf677925ba"}}