{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:NXL3ERFDEM3ZVUI7KHWVGSONQ5","short_pith_number":"pith:NXL3ERFD","canonical_record":{"source":{"id":"2606.29655","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2026-06-28T23:54:20Z","cross_cats_sorted":["cs.NE","q-bio.QM"],"title_canon_sha256":"80b974dbee8e6421048a34f8ac8d2d8d81f6eb9ca2d030ec67ef3a2b67f3b4bd","abstract_canon_sha256":"dda089b91968484634b8a5755e7e8409e96baeda6aca3b69dd2a347006bcc47d"},"schema_version":"1.0"},"canonical_sha256":"6dd7b244a323379ad11f51ed5349cd8772f3caf9dd4f6664e92b501859873126","source":{"kind":"arxiv","id":"2606.29655","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.29655","created_at":"2026-06-30T02:17:29Z"},{"alias_kind":"arxiv_version","alias_value":"2606.29655v1","created_at":"2026-06-30T02:17:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.29655","created_at":"2026-06-30T02:17:29Z"},{"alias_kind":"pith_short_12","alias_value":"NXL3ERFDEM3Z","created_at":"2026-06-30T02:17:29Z"},{"alias_kind":"pith_short_16","alias_value":"NXL3ERFDEM3ZVUI7","created_at":"2026-06-30T02:17:29Z"},{"alias_kind":"pith_short_8","alias_value":"NXL3ERFD","created_at":"2026-06-30T02:17:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:NXL3ERFDEM3ZVUI7KHWVGSONQ5","target":"record","payload":{"canonical_record":{"source":{"id":"2606.29655","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2026-06-28T23:54:20Z","cross_cats_sorted":["cs.NE","q-bio.QM"],"title_canon_sha256":"80b974dbee8e6421048a34f8ac8d2d8d81f6eb9ca2d030ec67ef3a2b67f3b4bd","abstract_canon_sha256":"dda089b91968484634b8a5755e7e8409e96baeda6aca3b69dd2a347006bcc47d"},"schema_version":"1.0"},"canonical_sha256":"6dd7b244a323379ad11f51ed5349cd8772f3caf9dd4f6664e92b501859873126","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-30T02:17:29.095022Z","signature_b64":"4/QNOflry/3/nBBLFBLGwOq10KA9XWdyUDKt6fctCTuYOw8DKKYaJw03kg0+oMQQUq/XXqA3ql2YOagZc9n2Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6dd7b244a323379ad11f51ed5349cd8772f3caf9dd4f6664e92b501859873126","last_reissued_at":"2026-06-30T02:17:29.094444Z","signature_status":"signed_v1","first_computed_at":"2026-06-30T02:17:29.094444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.29655","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":"2026-06-30T02:17:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RLljmMyoYpTXHTANi2qvnXiks72FvBvpXKtHslUzQFtQxUG/mrCbcj7T9kuPbU7nI5aqPYEUE0sPEwI3MiwqDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T18:00:36.330826Z"},"content_sha256":"28d3d0d6cd18609febec627569beb8c0d82524ed83a2fb240fdc5b6d0f51224d","schema_version":"1.0","event_id":"sha256:28d3d0d6cd18609febec627569beb8c0d82524ed83a2fb240fdc5b6d0f51224d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:NXL3ERFDEM3ZVUI7KHWVGSONQ5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Geometric Stability of Neural Population Codes: Regional Variation, Behavioral Relevance, and Circuit Dependence","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NE","q-bio.QM"],"primary_cat":"q-bio.NC","authors_text":"Prashant C. Raju","submitted_at":"2026-06-28T23:54:20Z","abstract_excerpt":"Current models of representational reliability in neural populations focus on temporal stability: whether population centroids are preserved across sessions and days. This framing leaves a fundamental question unanswered: how reliably does the pairwise distance structure among stimuli reproduce across independent observations within a session? We argue that this property, geometric stability, constitutes an independent axis of representational analysis that existing frameworks do not capture. We formalize geometric stability as the Spearman rank correlation between split-half representational "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.29655","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/2606.29655/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":"2026-06-30T02:17:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4it6bPlGvCYB4hX6Ngn/LuJwd5w29M/gh2KWFzULGN+aI4OV9DeSe1+PERXE6GVCZcTPmOpOsUi6HNr7YrI3CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T18:00:36.331208Z"},"content_sha256":"62bb4bd81a2e1a5e64b746b9dac7abf5767df951761b36a4a099bf8a019278b7","schema_version":"1.0","event_id":"sha256:62bb4bd81a2e1a5e64b746b9dac7abf5767df951761b36a4a099bf8a019278b7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NXL3ERFDEM3ZVUI7KHWVGSONQ5/bundle.json","state_url":"https://pith.science/pith/NXL3ERFDEM3ZVUI7KHWVGSONQ5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NXL3ERFDEM3ZVUI7KHWVGSONQ5/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":"2026-07-02T18:00:36Z","links":{"resolver":"https://pith.science/pith/NXL3ERFDEM3ZVUI7KHWVGSONQ5","bundle":"https://pith.science/pith/NXL3ERFDEM3ZVUI7KHWVGSONQ5/bundle.json","state":"https://pith.science/pith/NXL3ERFDEM3ZVUI7KHWVGSONQ5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NXL3ERFDEM3ZVUI7KHWVGSONQ5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:NXL3ERFDEM3ZVUI7KHWVGSONQ5","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":"dda089b91968484634b8a5755e7e8409e96baeda6aca3b69dd2a347006bcc47d","cross_cats_sorted":["cs.NE","q-bio.QM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2026-06-28T23:54:20Z","title_canon_sha256":"80b974dbee8e6421048a34f8ac8d2d8d81f6eb9ca2d030ec67ef3a2b67f3b4bd"},"schema_version":"1.0","source":{"id":"2606.29655","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.29655","created_at":"2026-06-30T02:17:29Z"},{"alias_kind":"arxiv_version","alias_value":"2606.29655v1","created_at":"2026-06-30T02:17:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.29655","created_at":"2026-06-30T02:17:29Z"},{"alias_kind":"pith_short_12","alias_value":"NXL3ERFDEM3Z","created_at":"2026-06-30T02:17:29Z"},{"alias_kind":"pith_short_16","alias_value":"NXL3ERFDEM3ZVUI7","created_at":"2026-06-30T02:17:29Z"},{"alias_kind":"pith_short_8","alias_value":"NXL3ERFD","created_at":"2026-06-30T02:17:29Z"}],"graph_snapshots":[{"event_id":"sha256:62bb4bd81a2e1a5e64b746b9dac7abf5767df951761b36a4a099bf8a019278b7","target":"graph","created_at":"2026-06-30T02:17:29Z","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/2606.29655/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Current models of representational reliability in neural populations focus on temporal stability: whether population centroids are preserved across sessions and days. This framing leaves a fundamental question unanswered: how reliably does the pairwise distance structure among stimuli reproduce across independent observations within a session? We argue that this property, geometric stability, constitutes an independent axis of representational analysis that existing frameworks do not capture. We formalize geometric stability as the Spearman rank correlation between split-half representational ","authors_text":"Prashant C. Raju","cross_cats":["cs.NE","q-bio.QM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2026-06-28T23:54:20Z","title":"Geometric Stability of Neural Population Codes: Regional Variation, Behavioral Relevance, and Circuit Dependence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.29655","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":"sha256:28d3d0d6cd18609febec627569beb8c0d82524ed83a2fb240fdc5b6d0f51224d","target":"record","created_at":"2026-06-30T02:17:29Z","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":"dda089b91968484634b8a5755e7e8409e96baeda6aca3b69dd2a347006bcc47d","cross_cats_sorted":["cs.NE","q-bio.QM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2026-06-28T23:54:20Z","title_canon_sha256":"80b974dbee8e6421048a34f8ac8d2d8d81f6eb9ca2d030ec67ef3a2b67f3b4bd"},"schema_version":"1.0","source":{"id":"2606.29655","kind":"arxiv","version":1}},"canonical_sha256":"6dd7b244a323379ad11f51ed5349cd8772f3caf9dd4f6664e92b501859873126","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6dd7b244a323379ad11f51ed5349cd8772f3caf9dd4f6664e92b501859873126","first_computed_at":"2026-06-30T02:17:29.094444Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-30T02:17:29.094444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4/QNOflry/3/nBBLFBLGwOq10KA9XWdyUDKt6fctCTuYOw8DKKYaJw03kg0+oMQQUq/XXqA3ql2YOagZc9n2Cg==","signature_status":"signed_v1","signed_at":"2026-06-30T02:17:29.095022Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.29655","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28d3d0d6cd18609febec627569beb8c0d82524ed83a2fb240fdc5b6d0f51224d","sha256:62bb4bd81a2e1a5e64b746b9dac7abf5767df951761b36a4a099bf8a019278b7"],"state_sha256":"1afe06c86fbd70145d1cef7f19f1cbbfae54cf771647108fc9059ac4de4b049a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GmjW69kSJR1FTx8JxTU4BZvJMb0+ZKexWd4UYUNGMyB5uB2+p+LK5ewgL5wyQpp6ovmhMfW/nxEqMA2vhDkSDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T18:00:36.333181Z","bundle_sha256":"3f24a292d863a4d1c1b6f44ba0885ea3ed8fcc637374e363dff5fa104837fe46"}}