{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:NDWQEANPIM3UUCWOOZZPBM24LV","short_pith_number":"pith:NDWQEANP","canonical_record":{"source":{"id":"1608.01378","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-03T22:17:49Z","cross_cats_sorted":[],"title_canon_sha256":"ff4ab59882d035c2dc3f730edaa651c4517941ea264adcdae446bdf332b88be1","abstract_canon_sha256":"31c51597c25467aa4fc5ca057d82a313fe24944866d64475873ee8411ccc0d66"},"schema_version":"1.0"},"canonical_sha256":"68ed0201af43374a0ace7672f0b35c5d7f67b03935eb1b3730b27c9e35927dba","source":{"kind":"arxiv","id":"1608.01378","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.01378","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"arxiv_version","alias_value":"1608.01378v1","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.01378","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"pith_short_12","alias_value":"NDWQEANPIM3U","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"NDWQEANPIM3UUCWO","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"NDWQEANP","created_at":"2026-05-18T12:30:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:NDWQEANPIM3UUCWOOZZPBM24LV","target":"record","payload":{"canonical_record":{"source":{"id":"1608.01378","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-03T22:17:49Z","cross_cats_sorted":[],"title_canon_sha256":"ff4ab59882d035c2dc3f730edaa651c4517941ea264adcdae446bdf332b88be1","abstract_canon_sha256":"31c51597c25467aa4fc5ca057d82a313fe24944866d64475873ee8411ccc0d66"},"schema_version":"1.0"},"canonical_sha256":"68ed0201af43374a0ace7672f0b35c5d7f67b03935eb1b3730b27c9e35927dba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:01:22.692769Z","signature_b64":"EmYtYP0B+fgazsD36YooEQ0m4KS2SVOHScV/6Ao8GEOPHjY6K/2LvqyII3Y3+TeAFZK6YuqnIl4BJluTXe54AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68ed0201af43374a0ace7672f0b35c5d7f67b03935eb1b3730b27c9e35927dba","last_reissued_at":"2026-05-18T01:01:22.692142Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:01:22.692142Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.01378","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":"2026-05-18T01:01:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6oiKQELgM7cvKR9UK6gAj7guxXPsEfWYcKtWWi45O3B+PxRmoSwTMMvfN39UuZUrhdJBxeU+byvWY3frpbL7BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T06:31:44.489183Z"},"content_sha256":"04eedcac9988da0286a1147d5b6f42de0cb6c27e1bd509ccdef53e7af8b96531","schema_version":"1.0","event_id":"sha256:04eedcac9988da0286a1147d5b6f42de0cb6c27e1bd509ccdef53e7af8b96531"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:NDWQEANPIM3UUCWOOZZPBM24LV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Analysis of the Bayesian Cramer-Rao lower bound in astrometry: Studying the impact of prior information in the location of an object","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Alex Echeverria, Jorge F. Silva, Marcos Orchard, Rene A. Mendez","submitted_at":"2016-08-03T22:17:49Z","abstract_excerpt":"Context. The best precision that can be achieved to estimate the location of a stellar-like object is a topic of permanent interest in the astrometric community.\n  Aims. We analyse bounds for the best position estimation of a stellar-like object on a CCD detector array in a Bayesian setting where the position is unknown, but where we have access to a prior distribution. In contrast to a parametric setting where we estimate a parameter from observations, the Bayesian approach estimates a random object (i.e., the position is a random variable) from observations that are statistically dependent o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.01378","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":"2026-05-18T01:01:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GBDQodzbSJ4jISRTYDrXufydULgt8bJtZqRIEyb+vvAGA4YZPzuiOSdsCygE9N5Pw1vqLRjV+biU9tbOv8ikAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T06:31:44.489535Z"},"content_sha256":"7d3c25b66810e6e452f69c31dd891e9b83916722892768b7ece43ba3729abfe6","schema_version":"1.0","event_id":"sha256:7d3c25b66810e6e452f69c31dd891e9b83916722892768b7ece43ba3729abfe6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NDWQEANPIM3UUCWOOZZPBM24LV/bundle.json","state_url":"https://pith.science/pith/NDWQEANPIM3UUCWOOZZPBM24LV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NDWQEANPIM3UUCWOOZZPBM24LV/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":"2026-07-03T06:31:44Z","links":{"resolver":"https://pith.science/pith/NDWQEANPIM3UUCWOOZZPBM24LV","bundle":"https://pith.science/pith/NDWQEANPIM3UUCWOOZZPBM24LV/bundle.json","state":"https://pith.science/pith/NDWQEANPIM3UUCWOOZZPBM24LV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NDWQEANPIM3UUCWOOZZPBM24LV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:NDWQEANPIM3UUCWOOZZPBM24LV","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":"31c51597c25467aa4fc5ca057d82a313fe24944866d64475873ee8411ccc0d66","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-03T22:17:49Z","title_canon_sha256":"ff4ab59882d035c2dc3f730edaa651c4517941ea264adcdae446bdf332b88be1"},"schema_version":"1.0","source":{"id":"1608.01378","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.01378","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"arxiv_version","alias_value":"1608.01378v1","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.01378","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"pith_short_12","alias_value":"NDWQEANPIM3U","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"NDWQEANPIM3UUCWO","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"NDWQEANP","created_at":"2026-05-18T12:30:32Z"}],"graph_snapshots":[{"event_id":"sha256:7d3c25b66810e6e452f69c31dd891e9b83916722892768b7ece43ba3729abfe6","target":"graph","created_at":"2026-05-18T01:01:22Z","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":"Context. The best precision that can be achieved to estimate the location of a stellar-like object is a topic of permanent interest in the astrometric community.\n  Aims. We analyse bounds for the best position estimation of a stellar-like object on a CCD detector array in a Bayesian setting where the position is unknown, but where we have access to a prior distribution. In contrast to a parametric setting where we estimate a parameter from observations, the Bayesian approach estimates a random object (i.e., the position is a random variable) from observations that are statistically dependent o","authors_text":"Alex Echeverria, Jorge F. Silva, Marcos Orchard, Rene A. Mendez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-03T22:17:49Z","title":"Analysis of the Bayesian Cramer-Rao lower bound in astrometry: Studying the impact of prior information in the location of an object"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.01378","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":"sha256:04eedcac9988da0286a1147d5b6f42de0cb6c27e1bd509ccdef53e7af8b96531","target":"record","created_at":"2026-05-18T01:01:22Z","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":"31c51597c25467aa4fc5ca057d82a313fe24944866d64475873ee8411ccc0d66","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-03T22:17:49Z","title_canon_sha256":"ff4ab59882d035c2dc3f730edaa651c4517941ea264adcdae446bdf332b88be1"},"schema_version":"1.0","source":{"id":"1608.01378","kind":"arxiv","version":1}},"canonical_sha256":"68ed0201af43374a0ace7672f0b35c5d7f67b03935eb1b3730b27c9e35927dba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"68ed0201af43374a0ace7672f0b35c5d7f67b03935eb1b3730b27c9e35927dba","first_computed_at":"2026-05-18T01:01:22.692142Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:01:22.692142Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EmYtYP0B+fgazsD36YooEQ0m4KS2SVOHScV/6Ao8GEOPHjY6K/2LvqyII3Y3+TeAFZK6YuqnIl4BJluTXe54AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:01:22.692769Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.01378","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04eedcac9988da0286a1147d5b6f42de0cb6c27e1bd509ccdef53e7af8b96531","sha256:7d3c25b66810e6e452f69c31dd891e9b83916722892768b7ece43ba3729abfe6"],"state_sha256":"e67f0490b3c2689c1af2f08ed341d793231a962fa8ae0fedefe67ef311d6be7f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gRPGKRxqfDjsln3yaX7pO9AwXEAsselA4HHLlUfmbRgtZzrUP3F6b3sDJhtm3wKXLt9qptcvRBsaR9g7fgkpAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T06:31:44.491451Z","bundle_sha256":"e87a1392d231634f633fd1b83f06c5de7ec460b71b364ff7123b7d9e70bd11ad"}}