{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:DRILTD5TPW75AEZL2XOWJHLGPL","short_pith_number":"pith:DRILTD5T","canonical_record":{"source":{"id":"1610.03543","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CC","submitted_at":"2016-10-11T21:52:05Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"107b3555aa7465f10757a047bbfb4d83b01fc617d0cccf754c9ce4b9f60aebe9","abstract_canon_sha256":"1a89b7cee9b98282870907ea7fd78d1a2cfc083eff8a66cbe59e2303670b38c8"},"schema_version":"1.0"},"canonical_sha256":"1c50b98fb37dbfd0132bd5dd649d667ac1a47a4d6025d3db240bcd934ae5cf1b","source":{"kind":"arxiv","id":"1610.03543","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.03543","created_at":"2026-05-18T01:02:30Z"},{"alias_kind":"arxiv_version","alias_value":"1610.03543v1","created_at":"2026-05-18T01:02:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.03543","created_at":"2026-05-18T01:02:30Z"},{"alias_kind":"pith_short_12","alias_value":"DRILTD5TPW75","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DRILTD5TPW75AEZL","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DRILTD5T","created_at":"2026-05-18T12:30:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:DRILTD5TPW75AEZL2XOWJHLGPL","target":"record","payload":{"canonical_record":{"source":{"id":"1610.03543","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CC","submitted_at":"2016-10-11T21:52:05Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"107b3555aa7465f10757a047bbfb4d83b01fc617d0cccf754c9ce4b9f60aebe9","abstract_canon_sha256":"1a89b7cee9b98282870907ea7fd78d1a2cfc083eff8a66cbe59e2303670b38c8"},"schema_version":"1.0"},"canonical_sha256":"1c50b98fb37dbfd0132bd5dd649d667ac1a47a4d6025d3db240bcd934ae5cf1b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:02:30.050089Z","signature_b64":"nNLgZTwGkVcla0Dj0qGwQjMUkRqeCl0VoMXmqF9X1a/IiJgx3K0SbOLA0fvnYpf8a3DFIDDxs8R0u4aibngmDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1c50b98fb37dbfd0132bd5dd649d667ac1a47a4d6025d3db240bcd934ae5cf1b","last_reissued_at":"2026-05-18T01:02:30.049639Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:02:30.049639Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1610.03543","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":"2026-05-18T01:02:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7bm9lCt7joJOBa8sylLAvJrIjw3Tk9/4/D5wfO4m4ErFRzRHOkT1SpCewwO4PGLoHP6k4oigPmaD5742jJTwAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T05:04:06.862814Z"},"content_sha256":"f9496d9874160e3a7e1fddbf6df59912a4db9d1d7180b484bd1a878e523902db","schema_version":"1.0","event_id":"sha256:f9496d9874160e3a7e1fddbf6df59912a4db9d1d7180b484bd1a878e523902db"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:DRILTD5TPW75AEZL2XOWJHLGPL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum automata cannot detect biased coins, even in the limit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cs.CC","authors_text":"Guy Kindler, Ryan O`Donnell","submitted_at":"2016-10-11T21:52:05Z","abstract_excerpt":"Aaronson and Drucker (2011) asked whether there exists a quantum finite automaton that can distinguish fair coin tosses from biased ones by spending significantly more time in accepting states, on average, given an infinite sequence of tosses. We answer this question negatively."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.03543","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":"2026-05-18T01:02:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QfdLRh2wISMffujUXGvFtObxc1oKHM/Z6IDE4Nal+1ZzVJjOWyGdZbgAvMKY/SRwyCPNBp7JkpxxhGupm04sBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T05:04:06.863561Z"},"content_sha256":"ffc5de30ab571aba7c2d07ace610a77b5f8edef4b1c5451880f3487cf0fbbfbb","schema_version":"1.0","event_id":"sha256:ffc5de30ab571aba7c2d07ace610a77b5f8edef4b1c5451880f3487cf0fbbfbb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DRILTD5TPW75AEZL2XOWJHLGPL/bundle.json","state_url":"https://pith.science/pith/DRILTD5TPW75AEZL2XOWJHLGPL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DRILTD5TPW75AEZL2XOWJHLGPL/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":"2026-05-31T05:04:06Z","links":{"resolver":"https://pith.science/pith/DRILTD5TPW75AEZL2XOWJHLGPL","bundle":"https://pith.science/pith/DRILTD5TPW75AEZL2XOWJHLGPL/bundle.json","state":"https://pith.science/pith/DRILTD5TPW75AEZL2XOWJHLGPL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DRILTD5TPW75AEZL2XOWJHLGPL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:DRILTD5TPW75AEZL2XOWJHLGPL","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":"1a89b7cee9b98282870907ea7fd78d1a2cfc083eff8a66cbe59e2303670b38c8","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CC","submitted_at":"2016-10-11T21:52:05Z","title_canon_sha256":"107b3555aa7465f10757a047bbfb4d83b01fc617d0cccf754c9ce4b9f60aebe9"},"schema_version":"1.0","source":{"id":"1610.03543","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.03543","created_at":"2026-05-18T01:02:30Z"},{"alias_kind":"arxiv_version","alias_value":"1610.03543v1","created_at":"2026-05-18T01:02:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.03543","created_at":"2026-05-18T01:02:30Z"},{"alias_kind":"pith_short_12","alias_value":"DRILTD5TPW75","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DRILTD5TPW75AEZL","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DRILTD5T","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:ffc5de30ab571aba7c2d07ace610a77b5f8edef4b1c5451880f3487cf0fbbfbb","target":"graph","created_at":"2026-05-18T01:02:30Z","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":"Aaronson and Drucker (2011) asked whether there exists a quantum finite automaton that can distinguish fair coin tosses from biased ones by spending significantly more time in accepting states, on average, given an infinite sequence of tosses. We answer this question negatively.","authors_text":"Guy Kindler, Ryan O`Donnell","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CC","submitted_at":"2016-10-11T21:52:05Z","title":"Quantum automata cannot detect biased coins, even in the limit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.03543","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:f9496d9874160e3a7e1fddbf6df59912a4db9d1d7180b484bd1a878e523902db","target":"record","created_at":"2026-05-18T01:02:30Z","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":"1a89b7cee9b98282870907ea7fd78d1a2cfc083eff8a66cbe59e2303670b38c8","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CC","submitted_at":"2016-10-11T21:52:05Z","title_canon_sha256":"107b3555aa7465f10757a047bbfb4d83b01fc617d0cccf754c9ce4b9f60aebe9"},"schema_version":"1.0","source":{"id":"1610.03543","kind":"arxiv","version":1}},"canonical_sha256":"1c50b98fb37dbfd0132bd5dd649d667ac1a47a4d6025d3db240bcd934ae5cf1b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c50b98fb37dbfd0132bd5dd649d667ac1a47a4d6025d3db240bcd934ae5cf1b","first_computed_at":"2026-05-18T01:02:30.049639Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:02:30.049639Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nNLgZTwGkVcla0Dj0qGwQjMUkRqeCl0VoMXmqF9X1a/IiJgx3K0SbOLA0fvnYpf8a3DFIDDxs8R0u4aibngmDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:02:30.050089Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.03543","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f9496d9874160e3a7e1fddbf6df59912a4db9d1d7180b484bd1a878e523902db","sha256:ffc5de30ab571aba7c2d07ace610a77b5f8edef4b1c5451880f3487cf0fbbfbb"],"state_sha256":"239871c19c5db8e95a73d4ffddb05bf85f523dd7054f46284b706cfdfc795059"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aBH01ioWoqEkj58rcvEzNDKz2T72+fubpr7I/oYk/kHOClCSoIkvidcehGSD89YW0wTc/e2dT6t0rPnVCQr9Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T05:04:06.867258Z","bundle_sha256":"7e26b15bed8e935993caa099b2da7625a013ea586370a6d7ffc8b24db92e10bb"}}