{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:CC2TCDVF32YY5FTXSZ2TZ2QZ7K","short_pith_number":"pith:CC2TCDVF","canonical_record":{"source":{"id":"1810.06512","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2018-10-15T16:54:28Z","cross_cats_sorted":["gr-qc","math.MP","quant-ph"],"title_canon_sha256":"ea2068fcfc44d319e88de8880bc4c1524fb0a8869bad7921f54b0e2564253f38","abstract_canon_sha256":"4ea2bf8c6e44a7df8288dae86b826bbacce648ab3ef7ecefcda53218dbe94770"},"schema_version":"1.0"},"canonical_sha256":"10b5310ea5deb18e967796753cea19fa85e0e3b2b366fd0f7a2a55171f756c01","source":{"kind":"arxiv","id":"1810.06512","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.06512","created_at":"2026-07-05T01:21:45Z"},{"alias_kind":"arxiv_version","alias_value":"1810.06512v3","created_at":"2026-07-05T01:21:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.06512","created_at":"2026-07-05T01:21:45Z"},{"alias_kind":"pith_short_12","alias_value":"CC2TCDVF32YY","created_at":"2026-07-05T01:21:45Z"},{"alias_kind":"pith_short_16","alias_value":"CC2TCDVF32YY5FTX","created_at":"2026-07-05T01:21:45Z"},{"alias_kind":"pith_short_8","alias_value":"CC2TCDVF","created_at":"2026-07-05T01:21:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:CC2TCDVF32YY5FTXSZ2TZ2QZ7K","target":"record","payload":{"canonical_record":{"source":{"id":"1810.06512","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2018-10-15T16:54:28Z","cross_cats_sorted":["gr-qc","math.MP","quant-ph"],"title_canon_sha256":"ea2068fcfc44d319e88de8880bc4c1524fb0a8869bad7921f54b0e2564253f38","abstract_canon_sha256":"4ea2bf8c6e44a7df8288dae86b826bbacce648ab3ef7ecefcda53218dbe94770"},"schema_version":"1.0"},"canonical_sha256":"10b5310ea5deb18e967796753cea19fa85e0e3b2b366fd0f7a2a55171f756c01","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:21:45.247209Z","signature_b64":"QuqeUR7NzlqP7rmis5nKAXqI/HJLW0dkCMtg+gvDofuKTZAv2U36RZt37EX7gZjz1PIAd3SJT/9oQw0491XqAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"10b5310ea5deb18e967796753cea19fa85e0e3b2b366fd0f7a2a55171f756c01","last_reissued_at":"2026-07-05T01:21:45.246745Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:21:45.246745Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.06512","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":"2026-07-05T01:21:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ymi0yOlRcGFw9ygwm87wu17grhf637H9xPzd1v/MRP7ObzXQca2XfYu9we/PUjMKDYPjb5cLa0ecWi+fs6DXBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T17:04:04.194635Z"},"content_sha256":"0ee0ad0cfb3badf21a7eb3aae4ced452e093922c86004a37528aca670e340de2","schema_version":"1.0","event_id":"sha256:0ee0ad0cfb3badf21a7eb3aae4ced452e093922c86004a37528aca670e340de2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:CC2TCDVF32YY5FTXSZ2TZ2QZ7K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum fields and local measurements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","math.MP","quant-ph"],"primary_cat":"math-ph","authors_text":"Christopher J. Fewster, Rainer Verch","submitted_at":"2018-10-15T16:54:28Z","abstract_excerpt":"The measurement process is considered for quantum field theory on curved spacetimes. Measurements are carried out on one QFT, the \"system\", using another, the \"probe\" via a dynamical coupling of \"system\" and \"probe\" in a bounded spacetime region. The resulting \"coupled theory\" determines a scattering map on the uncoupled combination of the \"system\" and \"probe\" by reference to natural \"in\" and \"out\" spacetime regions. No specific interaction is assumed and all constructions are local and covariant.\n  Given any initial probe state in the \"in\" region, the scattering map determines a completely po"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.06512","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1810.06512/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":"2026-07-05T01:21:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/dpkHGN6z8zOMYvsg/FDYuuJtrwO6YFOqIe9uhTrzP+Ctc8WAxpK4yFa1atOkWv0i9+ABABY7Fym8PSUMaYPAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T17:04:04.195690Z"},"content_sha256":"4ef61dd394a111f8606baf75bc75fcd81b9a4182d420e0a3f0e5da0f2256e20d","schema_version":"1.0","event_id":"sha256:4ef61dd394a111f8606baf75bc75fcd81b9a4182d420e0a3f0e5da0f2256e20d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CC2TCDVF32YY5FTXSZ2TZ2QZ7K/bundle.json","state_url":"https://pith.science/pith/CC2TCDVF32YY5FTXSZ2TZ2QZ7K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CC2TCDVF32YY5FTXSZ2TZ2QZ7K/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":"2026-08-06T17:04:04Z","links":{"resolver":"https://pith.science/pith/CC2TCDVF32YY5FTXSZ2TZ2QZ7K","bundle":"https://pith.science/pith/CC2TCDVF32YY5FTXSZ2TZ2QZ7K/bundle.json","state":"https://pith.science/pith/CC2TCDVF32YY5FTXSZ2TZ2QZ7K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CC2TCDVF32YY5FTXSZ2TZ2QZ7K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:CC2TCDVF32YY5FTXSZ2TZ2QZ7K","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":"4ea2bf8c6e44a7df8288dae86b826bbacce648ab3ef7ecefcda53218dbe94770","cross_cats_sorted":["gr-qc","math.MP","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2018-10-15T16:54:28Z","title_canon_sha256":"ea2068fcfc44d319e88de8880bc4c1524fb0a8869bad7921f54b0e2564253f38"},"schema_version":"1.0","source":{"id":"1810.06512","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.06512","created_at":"2026-07-05T01:21:45Z"},{"alias_kind":"arxiv_version","alias_value":"1810.06512v3","created_at":"2026-07-05T01:21:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.06512","created_at":"2026-07-05T01:21:45Z"},{"alias_kind":"pith_short_12","alias_value":"CC2TCDVF32YY","created_at":"2026-07-05T01:21:45Z"},{"alias_kind":"pith_short_16","alias_value":"CC2TCDVF32YY5FTX","created_at":"2026-07-05T01:21:45Z"},{"alias_kind":"pith_short_8","alias_value":"CC2TCDVF","created_at":"2026-07-05T01:21:45Z"}],"graph_snapshots":[{"event_id":"sha256:4ef61dd394a111f8606baf75bc75fcd81b9a4182d420e0a3f0e5da0f2256e20d","target":"graph","created_at":"2026-07-05T01:21:45Z","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/1810.06512/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The measurement process is considered for quantum field theory on curved spacetimes. Measurements are carried out on one QFT, the \"system\", using another, the \"probe\" via a dynamical coupling of \"system\" and \"probe\" in a bounded spacetime region. The resulting \"coupled theory\" determines a scattering map on the uncoupled combination of the \"system\" and \"probe\" by reference to natural \"in\" and \"out\" spacetime regions. No specific interaction is assumed and all constructions are local and covariant.\n  Given any initial probe state in the \"in\" region, the scattering map determines a completely po","authors_text":"Christopher J. Fewster, Rainer Verch","cross_cats":["gr-qc","math.MP","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2018-10-15T16:54:28Z","title":"Quantum fields and local measurements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.06512","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":"sha256:0ee0ad0cfb3badf21a7eb3aae4ced452e093922c86004a37528aca670e340de2","target":"record","created_at":"2026-07-05T01:21:45Z","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":"4ea2bf8c6e44a7df8288dae86b826bbacce648ab3ef7ecefcda53218dbe94770","cross_cats_sorted":["gr-qc","math.MP","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2018-10-15T16:54:28Z","title_canon_sha256":"ea2068fcfc44d319e88de8880bc4c1524fb0a8869bad7921f54b0e2564253f38"},"schema_version":"1.0","source":{"id":"1810.06512","kind":"arxiv","version":3}},"canonical_sha256":"10b5310ea5deb18e967796753cea19fa85e0e3b2b366fd0f7a2a55171f756c01","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"10b5310ea5deb18e967796753cea19fa85e0e3b2b366fd0f7a2a55171f756c01","first_computed_at":"2026-07-05T01:21:45.246745Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:21:45.246745Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QuqeUR7NzlqP7rmis5nKAXqI/HJLW0dkCMtg+gvDofuKTZAv2U36RZt37EX7gZjz1PIAd3SJT/9oQw0491XqAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:21:45.247209Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.06512","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ee0ad0cfb3badf21a7eb3aae4ced452e093922c86004a37528aca670e340de2","sha256:4ef61dd394a111f8606baf75bc75fcd81b9a4182d420e0a3f0e5da0f2256e20d"],"state_sha256":"4cf837027c1209b7a9934f43b97c72f154641d73da5d5ed623d1bef5794a6f03"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p7FKnCMVOcMFAeUDbcPNMXzggRkJOWw9MPsP11+bekKiXhQh+a2g1xOJXz2hwrainoYhJ2Ng7Lhjk45/hoBNBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T17:04:04.201953Z","bundle_sha256":"330b70c5667339eaa31198702137f667323df9084288b75cba205faeaa773516"}}