{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:IIDDMOAMABFPFTVVG4CHBVJU4U","short_pith_number":"pith:IIDDMOAM","canonical_record":{"source":{"id":"0908.1231","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-08-09T13:02:30Z","cross_cats_sorted":[],"title_canon_sha256":"15813289ebaafd08e55cbe87ae3de9bfaf2eb2c48013c473c4e8ecf8b395aafc","abstract_canon_sha256":"bac5d00b4e11f8f04135fbbca5faad1f8cee781f1cb6c28aa39a658b8ca1008a"},"schema_version":"1.0"},"canonical_sha256":"420636380c004af2ceb5370470d534e5145c474932a1ca77ec70220bba76941b","source":{"kind":"arxiv","id":"0908.1231","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.1231","created_at":"2026-05-18T04:27:25Z"},{"alias_kind":"arxiv_version","alias_value":"0908.1231v3","created_at":"2026-05-18T04:27:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.1231","created_at":"2026-05-18T04:27:25Z"},{"alias_kind":"pith_short_12","alias_value":"IIDDMOAMABFP","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"IIDDMOAMABFPFTVV","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"IIDDMOAM","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:IIDDMOAMABFPFTVVG4CHBVJU4U","target":"record","payload":{"canonical_record":{"source":{"id":"0908.1231","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-08-09T13:02:30Z","cross_cats_sorted":[],"title_canon_sha256":"15813289ebaafd08e55cbe87ae3de9bfaf2eb2c48013c473c4e8ecf8b395aafc","abstract_canon_sha256":"bac5d00b4e11f8f04135fbbca5faad1f8cee781f1cb6c28aa39a658b8ca1008a"},"schema_version":"1.0"},"canonical_sha256":"420636380c004af2ceb5370470d534e5145c474932a1ca77ec70220bba76941b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:27:25.657964Z","signature_b64":"qoMv7LqDi2+Y41SWv3vf4AwmCpKFKiBVRqG+0qOScju/zyiK7hGnuMbJ64pcUdBjMdiP3CEUFmKK3eMzoUN8Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"420636380c004af2ceb5370470d534e5145c474932a1ca77ec70220bba76941b","last_reissued_at":"2026-05-18T04:27:25.657229Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:27:25.657229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0908.1231","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":"2026-05-18T04:27:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9hfDle8yrnUcNt6sjypBO/rNnif3c//7oaHoaw/hGNEZTu8W9bTba8YjlyDpnG+szttgCtPTVxLMFgOMoz1oAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T16:52:08.672535Z"},"content_sha256":"28705a4ae050633f0a9554682d58908909323c40b55109a8b0d64476585ef4ca","schema_version":"1.0","event_id":"sha256:28705a4ae050633f0a9554682d58908909323c40b55109a8b0d64476585ef4ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:IIDDMOAMABFPFTVVG4CHBVJU4U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Information contents and architectural requirements of observer \"ready\" states","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chris Fields","submitted_at":"2009-08-09T13:02:30Z","abstract_excerpt":"A functional analysis of the task of observing multiple macroscopic quantum systems over an extended period of time and then reporting the accumulated results is used to investigate the information that must be encoded in the \"ready\" state |O^r> of any finite, macroscopic observer O capable of performing this task. Decoherence considerations show that this task can be considered as involving local observations under classical conditions (LOCC), allowing the use of classical automata theory to define a minimal observer. It is shown that such a minimal observer must implement a functional archit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.1231","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":"2026-05-18T04:27:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gkjnrvXXY7lc8tempCRNQOQtURgbNlomJlfpB3UcU0ENmL9uBx0Odz88yrnnYG68wVAFAK25Kjmg6P4QjZ/BCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T16:52:08.672887Z"},"content_sha256":"ec558bf6e27ccd606279bd0db98c31fa8762ec48a0f4f7e0141798d4cec0427c","schema_version":"1.0","event_id":"sha256:ec558bf6e27ccd606279bd0db98c31fa8762ec48a0f4f7e0141798d4cec0427c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IIDDMOAMABFPFTVVG4CHBVJU4U/bundle.json","state_url":"https://pith.science/pith/IIDDMOAMABFPFTVVG4CHBVJU4U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IIDDMOAMABFPFTVVG4CHBVJU4U/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":"2026-06-24T16:52:08Z","links":{"resolver":"https://pith.science/pith/IIDDMOAMABFPFTVVG4CHBVJU4U","bundle":"https://pith.science/pith/IIDDMOAMABFPFTVVG4CHBVJU4U/bundle.json","state":"https://pith.science/pith/IIDDMOAMABFPFTVVG4CHBVJU4U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IIDDMOAMABFPFTVVG4CHBVJU4U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:IIDDMOAMABFPFTVVG4CHBVJU4U","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":"bac5d00b4e11f8f04135fbbca5faad1f8cee781f1cb6c28aa39a658b8ca1008a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-08-09T13:02:30Z","title_canon_sha256":"15813289ebaafd08e55cbe87ae3de9bfaf2eb2c48013c473c4e8ecf8b395aafc"},"schema_version":"1.0","source":{"id":"0908.1231","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.1231","created_at":"2026-05-18T04:27:25Z"},{"alias_kind":"arxiv_version","alias_value":"0908.1231v3","created_at":"2026-05-18T04:27:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.1231","created_at":"2026-05-18T04:27:25Z"},{"alias_kind":"pith_short_12","alias_value":"IIDDMOAMABFP","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"IIDDMOAMABFPFTVV","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"IIDDMOAM","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:ec558bf6e27ccd606279bd0db98c31fa8762ec48a0f4f7e0141798d4cec0427c","target":"graph","created_at":"2026-05-18T04:27:25Z","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":"A functional analysis of the task of observing multiple macroscopic quantum systems over an extended period of time and then reporting the accumulated results is used to investigate the information that must be encoded in the \"ready\" state |O^r> of any finite, macroscopic observer O capable of performing this task. Decoherence considerations show that this task can be considered as involving local observations under classical conditions (LOCC), allowing the use of classical automata theory to define a minimal observer. It is shown that such a minimal observer must implement a functional archit","authors_text":"Chris Fields","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-08-09T13:02:30Z","title":"Information contents and architectural requirements of observer \"ready\" states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.1231","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":"sha256:28705a4ae050633f0a9554682d58908909323c40b55109a8b0d64476585ef4ca","target":"record","created_at":"2026-05-18T04:27:25Z","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":"bac5d00b4e11f8f04135fbbca5faad1f8cee781f1cb6c28aa39a658b8ca1008a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-08-09T13:02:30Z","title_canon_sha256":"15813289ebaafd08e55cbe87ae3de9bfaf2eb2c48013c473c4e8ecf8b395aafc"},"schema_version":"1.0","source":{"id":"0908.1231","kind":"arxiv","version":3}},"canonical_sha256":"420636380c004af2ceb5370470d534e5145c474932a1ca77ec70220bba76941b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"420636380c004af2ceb5370470d534e5145c474932a1ca77ec70220bba76941b","first_computed_at":"2026-05-18T04:27:25.657229Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:27:25.657229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qoMv7LqDi2+Y41SWv3vf4AwmCpKFKiBVRqG+0qOScju/zyiK7hGnuMbJ64pcUdBjMdiP3CEUFmKK3eMzoUN8Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:27:25.657964Z","signed_message":"canonical_sha256_bytes"},"source_id":"0908.1231","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28705a4ae050633f0a9554682d58908909323c40b55109a8b0d64476585ef4ca","sha256:ec558bf6e27ccd606279bd0db98c31fa8762ec48a0f4f7e0141798d4cec0427c"],"state_sha256":"b08a1dc82ff8b09815ec7fb6ba52af3f71ffa001e3ad3e4d3786291b98a0790e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fM3Qt8eLQouJ6jsNk+69MWxxzq9gnw2N9+hddaO+LvoIrvUfgSuqGBD9xJtN5GRlI/jTJTOd/CT6SD7E0QakBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T16:52:08.674830Z","bundle_sha256":"8842bd6c96ec7765097e87f5765df9c352a1c7f9b3f3a3214a57998d9243bd53"}}