{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:53Q24STF3VCSACCHH2IHJEPYIN","short_pith_number":"pith:53Q24STF","canonical_record":{"source":{"id":"1307.4366","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-07-16T18:22:49Z","cross_cats_sorted":[],"title_canon_sha256":"e7d6a3ee1241b35b31cb9f8708289101ea3463dd8a27fbbc64a6faf1cda540c6","abstract_canon_sha256":"a2e32470e777b3aa6ec59bdd069339cfed228a6a0f2d18ff367e7b3759b15835"},"schema_version":"1.0"},"canonical_sha256":"eee1ae4a65dd452008473e907491f84357613209970868f0e74afa27d39c21eb","source":{"kind":"arxiv","id":"1307.4366","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.4366","created_at":"2026-05-18T02:59:06Z"},{"alias_kind":"arxiv_version","alias_value":"1307.4366v3","created_at":"2026-05-18T02:59:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.4366","created_at":"2026-05-18T02:59:06Z"},{"alias_kind":"pith_short_12","alias_value":"53Q24STF3VCS","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"53Q24STF3VCSACCH","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"53Q24STF","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:53Q24STF3VCSACCHH2IHJEPYIN","target":"record","payload":{"canonical_record":{"source":{"id":"1307.4366","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-07-16T18:22:49Z","cross_cats_sorted":[],"title_canon_sha256":"e7d6a3ee1241b35b31cb9f8708289101ea3463dd8a27fbbc64a6faf1cda540c6","abstract_canon_sha256":"a2e32470e777b3aa6ec59bdd069339cfed228a6a0f2d18ff367e7b3759b15835"},"schema_version":"1.0"},"canonical_sha256":"eee1ae4a65dd452008473e907491f84357613209970868f0e74afa27d39c21eb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:59:06.147841Z","signature_b64":"nwls+HQ4XBcR3x+fubCiSOiAcm8Rhu1AyiiUA484SNjW45P9nqP/jg0f3MUklINlx62yi2829nuKSXacbWZUAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eee1ae4a65dd452008473e907491f84357613209970868f0e74afa27d39c21eb","last_reissued_at":"2026-05-18T02:59:06.147029Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:59:06.147029Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.4366","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:59:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FoKdMH10N7F1LAxA5IO+eaz5zjmm2j4szXsRokykRciFEhPUlZ97GRJv5rssCYbI8hrRgYobFb94D9PTnFGtBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T08:39:12.626061Z"},"content_sha256":"b9d1d88b6e2a65a0c1a8ec006f2e63605621be9ee1606c4bb246987e91a37eb5","schema_version":"1.0","event_id":"sha256:b9d1d88b6e2a65a0c1a8ec006f2e63605621be9ee1606c4bb246987e91a37eb5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:53Q24STF3VCSACCHH2IHJEPYIN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"What does one measure, when one measures the arrival times of a quantum particle?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Detlef D\\\"urr, G\\\"unter Hinrichs, Nicola Vona","submitted_at":"2013-07-16T18:22:49Z","abstract_excerpt":"What is the right statistics for the measurements of arrival times of a quantum particle? Although this question is very old, it is still open. Usual experiments are performed in far-field regime and this question becomes unimportant, as a semiclassical analysis suffices. Nevertheless, the development in the detector technology will soon allow for near-field investigations, thus a better understanding of arrival time measurements is needed. Since outcomes of quantum measurements are always described by POVMs, various arrival time POVMs have been proposed. On the other hand many physicists woul"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.4366","kind":"arxiv","version":3},"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":"2026-05-18T02:59:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N+/Ft7DyreGcobjOwNG6/dHMe553GOQZ9uS6bAhCUgzPol1+3l5Yktd8QPEvBNn/ln66EEmhnn4eiL+7mFEIAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T08:39:12.626461Z"},"content_sha256":"332b1241395d4991d12794e83a8ef0be7e02aef1ba2d16e806dd8e2623adacb2","schema_version":"1.0","event_id":"sha256:332b1241395d4991d12794e83a8ef0be7e02aef1ba2d16e806dd8e2623adacb2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/53Q24STF3VCSACCHH2IHJEPYIN/bundle.json","state_url":"https://pith.science/pith/53Q24STF3VCSACCHH2IHJEPYIN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/53Q24STF3VCSACCHH2IHJEPYIN/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":"2026-05-31T08:39:12Z","links":{"resolver":"https://pith.science/pith/53Q24STF3VCSACCHH2IHJEPYIN","bundle":"https://pith.science/pith/53Q24STF3VCSACCHH2IHJEPYIN/bundle.json","state":"https://pith.science/pith/53Q24STF3VCSACCHH2IHJEPYIN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/53Q24STF3VCSACCHH2IHJEPYIN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:53Q24STF3VCSACCHH2IHJEPYIN","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":"a2e32470e777b3aa6ec59bdd069339cfed228a6a0f2d18ff367e7b3759b15835","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-07-16T18:22:49Z","title_canon_sha256":"e7d6a3ee1241b35b31cb9f8708289101ea3463dd8a27fbbc64a6faf1cda540c6"},"schema_version":"1.0","source":{"id":"1307.4366","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.4366","created_at":"2026-05-18T02:59:06Z"},{"alias_kind":"arxiv_version","alias_value":"1307.4366v3","created_at":"2026-05-18T02:59:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.4366","created_at":"2026-05-18T02:59:06Z"},{"alias_kind":"pith_short_12","alias_value":"53Q24STF3VCS","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"53Q24STF3VCSACCH","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"53Q24STF","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:332b1241395d4991d12794e83a8ef0be7e02aef1ba2d16e806dd8e2623adacb2","target":"graph","created_at":"2026-05-18T02:59:06Z","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":"What is the right statistics for the measurements of arrival times of a quantum particle? Although this question is very old, it is still open. Usual experiments are performed in far-field regime and this question becomes unimportant, as a semiclassical analysis suffices. Nevertheless, the development in the detector technology will soon allow for near-field investigations, thus a better understanding of arrival time measurements is needed. Since outcomes of quantum measurements are always described by POVMs, various arrival time POVMs have been proposed. On the other hand many physicists woul","authors_text":"Detlef D\\\"urr, G\\\"unter Hinrichs, Nicola Vona","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-07-16T18:22:49Z","title":"What does one measure, when one measures the arrival times of a quantum particle?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.4366","kind":"arxiv","version":3},"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:b9d1d88b6e2a65a0c1a8ec006f2e63605621be9ee1606c4bb246987e91a37eb5","target":"record","created_at":"2026-05-18T02:59:06Z","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":"a2e32470e777b3aa6ec59bdd069339cfed228a6a0f2d18ff367e7b3759b15835","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-07-16T18:22:49Z","title_canon_sha256":"e7d6a3ee1241b35b31cb9f8708289101ea3463dd8a27fbbc64a6faf1cda540c6"},"schema_version":"1.0","source":{"id":"1307.4366","kind":"arxiv","version":3}},"canonical_sha256":"eee1ae4a65dd452008473e907491f84357613209970868f0e74afa27d39c21eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eee1ae4a65dd452008473e907491f84357613209970868f0e74afa27d39c21eb","first_computed_at":"2026-05-18T02:59:06.147029Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:59:06.147029Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nwls+HQ4XBcR3x+fubCiSOiAcm8Rhu1AyiiUA484SNjW45P9nqP/jg0f3MUklINlx62yi2829nuKSXacbWZUAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:59:06.147841Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.4366","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9d1d88b6e2a65a0c1a8ec006f2e63605621be9ee1606c4bb246987e91a37eb5","sha256:332b1241395d4991d12794e83a8ef0be7e02aef1ba2d16e806dd8e2623adacb2"],"state_sha256":"c83dd5fb1b540b17effc8755cab348600e95cce5716fecd6b943e75cd852ae80"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3SoBoJaSDVFkiQ0jivWlSXh8Ku7UwxWKQEpn1stBPAzYZfqTSOiyyWgx0ZKV6P8WbVnIvx+JxxD1YpvEGoA7DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T08:39:12.629704Z","bundle_sha256":"e490dc675cdb733cf324aabdd56de0e06cf6b270485484ebd587dffa22586ffd"}}