{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:UB7MCKQVM2GAOWB7PYHPKLYD5W","short_pith_number":"pith:UB7MCKQV","canonical_record":{"source":{"id":"2606.22695","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"q-bio.NC","submitted_at":"2026-06-21T22:19:44Z","cross_cats_sorted":["stat.ME"],"title_canon_sha256":"70fce7fe47c090f74089058c4552bbbc352dd3eababf379a0130a2a14df9bae2","abstract_canon_sha256":"1e489c9d24921db9dc23d83f41be594712caad039756bff5d0cf6e2bf4b9a5ba"},"schema_version":"1.0"},"canonical_sha256":"a07ec12a15668c07583f7e0ef52f03ed8c57865ec2fd23c798c3e0fd9931c632","source":{"kind":"arxiv","id":"2606.22695","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.22695","created_at":"2026-06-23T02:13:45Z"},{"alias_kind":"arxiv_version","alias_value":"2606.22695v1","created_at":"2026-06-23T02:13:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.22695","created_at":"2026-06-23T02:13:45Z"},{"alias_kind":"pith_short_12","alias_value":"UB7MCKQVM2GA","created_at":"2026-06-23T02:13:45Z"},{"alias_kind":"pith_short_16","alias_value":"UB7MCKQVM2GAOWB7","created_at":"2026-06-23T02:13:45Z"},{"alias_kind":"pith_short_8","alias_value":"UB7MCKQV","created_at":"2026-06-23T02:13:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:UB7MCKQVM2GAOWB7PYHPKLYD5W","target":"record","payload":{"canonical_record":{"source":{"id":"2606.22695","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"q-bio.NC","submitted_at":"2026-06-21T22:19:44Z","cross_cats_sorted":["stat.ME"],"title_canon_sha256":"70fce7fe47c090f74089058c4552bbbc352dd3eababf379a0130a2a14df9bae2","abstract_canon_sha256":"1e489c9d24921db9dc23d83f41be594712caad039756bff5d0cf6e2bf4b9a5ba"},"schema_version":"1.0"},"canonical_sha256":"a07ec12a15668c07583f7e0ef52f03ed8c57865ec2fd23c798c3e0fd9931c632","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-23T02:13:45.066597Z","signature_b64":"YQOtr8yI+CckPRJjTst6ywQMBDwfmEGNjeMhKvW93XO5wh0tVWdwTEUTjEWjctsi/wes8fk4yveiv/8ED99aCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a07ec12a15668c07583f7e0ef52f03ed8c57865ec2fd23c798c3e0fd9931c632","last_reissued_at":"2026-06-23T02:13:45.066233Z","signature_status":"signed_v1","first_computed_at":"2026-06-23T02:13:45.066233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.22695","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":"2026-06-23T02:13:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uR52A0THzbZYkrAHnbnxVYOyW9UCPug9BGddPBWFFyZEdYpijWq/m0u9eiTD6IQhjp5B6w20LLwijhyRim0mDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T23:18:37.123995Z"},"content_sha256":"7f11d2b713457ddaef49f44eadced9400ccace67b6c4099c7b7ade1fe4dfef24","schema_version":"1.0","event_id":"sha256:7f11d2b713457ddaef49f44eadced9400ccace67b6c4099c7b7ade1fe4dfef24"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:UB7MCKQVM2GAOWB7PYHPKLYD5W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SPIDER -- Stitched Power-spectra for Inferring Directed information flow from incomplete and asynchronous Experimental Recordings","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["stat.ME"],"primary_cat":"q-bio.NC","authors_text":"Daniel Y. Takahashi, Yisi S. Zhang","submitted_at":"2026-06-21T22:19:44Z","abstract_excerpt":"Mapping the directed flow of information between brain regions -- their effective connectivity -- is central to understanding brain function, yet large-scale recordings sample only a fraction of the brain at a time: sessions, animals, and laboratories cover different, partially overlapping regions, usually without a shared temporal reference. Established directed-connectivity methods (Granger causality, dynamic causal modeling, partial directed coherence, PDC) require all regions to be recorded simultaneously and with a common clock. We introduce SPIDER, a non-parametric, frequency-domain fram"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.22695","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.22695/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":"2026-06-23T02:13:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lty9/bz3fokBh+Om6DGujMRDgHx4mH5pOhy5dVLIsr822OpC9pbkmUvqlzAMSgKEr9RPcSVZIrl/bGL7LSNEBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T23:18:37.124403Z"},"content_sha256":"b7cfca6750a263ba0f33ddf411916eaa59340cfa7aed1b98bdf42a32becbb6c3","schema_version":"1.0","event_id":"sha256:b7cfca6750a263ba0f33ddf411916eaa59340cfa7aed1b98bdf42a32becbb6c3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UB7MCKQVM2GAOWB7PYHPKLYD5W/bundle.json","state_url":"https://pith.science/pith/UB7MCKQVM2GAOWB7PYHPKLYD5W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UB7MCKQVM2GAOWB7PYHPKLYD5W/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":"2026-06-23T23:18:37Z","links":{"resolver":"https://pith.science/pith/UB7MCKQVM2GAOWB7PYHPKLYD5W","bundle":"https://pith.science/pith/UB7MCKQVM2GAOWB7PYHPKLYD5W/bundle.json","state":"https://pith.science/pith/UB7MCKQVM2GAOWB7PYHPKLYD5W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UB7MCKQVM2GAOWB7PYHPKLYD5W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:UB7MCKQVM2GAOWB7PYHPKLYD5W","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":"1e489c9d24921db9dc23d83f41be594712caad039756bff5d0cf6e2bf4b9a5ba","cross_cats_sorted":["stat.ME"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"q-bio.NC","submitted_at":"2026-06-21T22:19:44Z","title_canon_sha256":"70fce7fe47c090f74089058c4552bbbc352dd3eababf379a0130a2a14df9bae2"},"schema_version":"1.0","source":{"id":"2606.22695","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.22695","created_at":"2026-06-23T02:13:45Z"},{"alias_kind":"arxiv_version","alias_value":"2606.22695v1","created_at":"2026-06-23T02:13:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.22695","created_at":"2026-06-23T02:13:45Z"},{"alias_kind":"pith_short_12","alias_value":"UB7MCKQVM2GA","created_at":"2026-06-23T02:13:45Z"},{"alias_kind":"pith_short_16","alias_value":"UB7MCKQVM2GAOWB7","created_at":"2026-06-23T02:13:45Z"},{"alias_kind":"pith_short_8","alias_value":"UB7MCKQV","created_at":"2026-06-23T02:13:45Z"}],"graph_snapshots":[{"event_id":"sha256:b7cfca6750a263ba0f33ddf411916eaa59340cfa7aed1b98bdf42a32becbb6c3","target":"graph","created_at":"2026-06-23T02:13:45Z","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/2606.22695/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Mapping the directed flow of information between brain regions -- their effective connectivity -- is central to understanding brain function, yet large-scale recordings sample only a fraction of the brain at a time: sessions, animals, and laboratories cover different, partially overlapping regions, usually without a shared temporal reference. Established directed-connectivity methods (Granger causality, dynamic causal modeling, partial directed coherence, PDC) require all regions to be recorded simultaneously and with a common clock. We introduce SPIDER, a non-parametric, frequency-domain fram","authors_text":"Daniel Y. Takahashi, Yisi S. Zhang","cross_cats":["stat.ME"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"q-bio.NC","submitted_at":"2026-06-21T22:19:44Z","title":"SPIDER -- Stitched Power-spectra for Inferring Directed information flow from incomplete and asynchronous Experimental Recordings"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.22695","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":"sha256:7f11d2b713457ddaef49f44eadced9400ccace67b6c4099c7b7ade1fe4dfef24","target":"record","created_at":"2026-06-23T02:13:45Z","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":"1e489c9d24921db9dc23d83f41be594712caad039756bff5d0cf6e2bf4b9a5ba","cross_cats_sorted":["stat.ME"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"q-bio.NC","submitted_at":"2026-06-21T22:19:44Z","title_canon_sha256":"70fce7fe47c090f74089058c4552bbbc352dd3eababf379a0130a2a14df9bae2"},"schema_version":"1.0","source":{"id":"2606.22695","kind":"arxiv","version":1}},"canonical_sha256":"a07ec12a15668c07583f7e0ef52f03ed8c57865ec2fd23c798c3e0fd9931c632","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a07ec12a15668c07583f7e0ef52f03ed8c57865ec2fd23c798c3e0fd9931c632","first_computed_at":"2026-06-23T02:13:45.066233Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-23T02:13:45.066233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YQOtr8yI+CckPRJjTst6ywQMBDwfmEGNjeMhKvW93XO5wh0tVWdwTEUTjEWjctsi/wes8fk4yveiv/8ED99aCA==","signature_status":"signed_v1","signed_at":"2026-06-23T02:13:45.066597Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.22695","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f11d2b713457ddaef49f44eadced9400ccace67b6c4099c7b7ade1fe4dfef24","sha256:b7cfca6750a263ba0f33ddf411916eaa59340cfa7aed1b98bdf42a32becbb6c3"],"state_sha256":"85daed05043e79f8886cc7c5fe6f0976ff2a359f63840fdf54c08796adcc0f3b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vExTzZVKUwI0N/hznE5GLKwf/yeWNy2bMxiwSDPBznY8HmPHlYyIi/pypBipePomgZPi1LO3rtR/aexLb8SHDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T23:18:37.126370Z","bundle_sha256":"d34bb74a08e8ce62d26657108d7a8a3b117279681c92572d0052b93e1c7a8d5e"}}