{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:CGHJDMOUNQMGYSDITSRRDSVLIO","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":"85f961fc6ea3fbd792655921e2b4e7aa2e17ba258270e15a78b7d3c8b0a10100","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"1998-06-16T12:14:16Z","title_canon_sha256":"bb4734abf92888be5bbd23edd1df1c3dd93c1fb19d80530e0cf5fd7756bf6472"},"schema_version":"1.0","source":{"id":"quant-ph/9806054","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/9806054","created_at":"2026-07-04T14:47:13Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/9806054v2","created_at":"2026-07-04T14:47:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/9806054","created_at":"2026-07-04T14:47:13Z"},{"alias_kind":"pith_short_12","alias_value":"CGHJDMOUNQMG","created_at":"2026-07-04T14:47:13Z"},{"alias_kind":"pith_short_16","alias_value":"CGHJDMOUNQMGYSDI","created_at":"2026-07-04T14:47:13Z"},{"alias_kind":"pith_short_8","alias_value":"CGHJDMOU","created_at":"2026-07-04T14:47:13Z"}],"graph_snapshots":[{"event_id":"sha256:16c6f49e37ebd258fccb55e70ed209d74656a8bc95038bfa5e587993874d0eae","target":"graph","created_at":"2026-07-04T14:47:13Z","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/quant-ph/9806054/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We argue that the halting problem for quantum computers which was first raised by Myers, is by no means solved, as has been claimed recently. We explicitly demonstrate the difficulties that arise in a quantum computer when different branches of the computation halt at different, unknown, times.","authors_text":"Noah Linden, Sandu Popescu","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"1998-06-16T12:14:16Z","title":"The Halting Problem for Quantum Computers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/9806054","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":"sha256:046bfc8fd7218858a1f27b421a30c9885a78a1c5966fe539b423454b77a4c8b1","target":"record","created_at":"2026-07-04T14:47:13Z","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":"85f961fc6ea3fbd792655921e2b4e7aa2e17ba258270e15a78b7d3c8b0a10100","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"1998-06-16T12:14:16Z","title_canon_sha256":"bb4734abf92888be5bbd23edd1df1c3dd93c1fb19d80530e0cf5fd7756bf6472"},"schema_version":"1.0","source":{"id":"quant-ph/9806054","kind":"arxiv","version":2}},"canonical_sha256":"118e91b1d46c186c48689ca311caab43b98f11f41d0cc59df0d9d62184757133","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"118e91b1d46c186c48689ca311caab43b98f11f41d0cc59df0d9d62184757133","first_computed_at":"2026-07-04T14:47:13.006019Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:47:13.006019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yNJsgX2pV7dBueQX0MCgUW2TSJHhHjHqRj6sGu9F3dj1MHV9Tp+nI1ayT6spYAV+XYrqwSNNOV2B2A7WuxWTCg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:47:13.006395Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/9806054","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:046bfc8fd7218858a1f27b421a30c9885a78a1c5966fe539b423454b77a4c8b1","sha256:16c6f49e37ebd258fccb55e70ed209d74656a8bc95038bfa5e587993874d0eae"],"state_sha256":"baccc38ad8e39cdc93ff5571da196dd756ed991ddcea9d4fc9a0340bf3b600b8"}