{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:62Z7OMSUVXOSY36PZS7RAN5YXG","short_pith_number":"pith:62Z7OMSU","canonical_record":{"source":{"id":"2507.00598","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.NE","submitted_at":"2025-07-01T09:29:05Z","cross_cats_sorted":["cs.AI","cs.SC"],"title_canon_sha256":"2e615922c181a74b0939645d8cca286134f61b45bbf6014d90954f71cfcf5c19","abstract_canon_sha256":"db7a481049fdf134709494d995db0e01fe9665ef67a90f1fc967848ed844bd99"},"schema_version":"1.0"},"canonical_sha256":"f6b3f73254addd2c6fcfccbf1037b8b9a7ab71629395ada831f8962a91acebbe","source":{"kind":"arxiv","id":"2507.00598","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.00598","created_at":"2026-07-05T11:30:11Z"},{"alias_kind":"arxiv_version","alias_value":"2507.00598v1","created_at":"2026-07-05T11:30:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.00598","created_at":"2026-07-05T11:30:11Z"},{"alias_kind":"pith_short_12","alias_value":"62Z7OMSUVXOS","created_at":"2026-07-05T11:30:11Z"},{"alias_kind":"pith_short_16","alias_value":"62Z7OMSUVXOSY36P","created_at":"2026-07-05T11:30:11Z"},{"alias_kind":"pith_short_8","alias_value":"62Z7OMSU","created_at":"2026-07-05T11:30:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:62Z7OMSUVXOSY36PZS7RAN5YXG","target":"record","payload":{"canonical_record":{"source":{"id":"2507.00598","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.NE","submitted_at":"2025-07-01T09:29:05Z","cross_cats_sorted":["cs.AI","cs.SC"],"title_canon_sha256":"2e615922c181a74b0939645d8cca286134f61b45bbf6014d90954f71cfcf5c19","abstract_canon_sha256":"db7a481049fdf134709494d995db0e01fe9665ef67a90f1fc967848ed844bd99"},"schema_version":"1.0"},"canonical_sha256":"f6b3f73254addd2c6fcfccbf1037b8b9a7ab71629395ada831f8962a91acebbe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:30:11.473345Z","signature_b64":"ZQsN6ES4W3FrdTy9RYDWsXCu25wFmFHHBSmASy8IhV79AG/xA23V2PfpkJ+W1JG9DBgzZQE+JtHJnm11V1qRAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f6b3f73254addd2c6fcfccbf1037b8b9a7ab71629395ada831f8962a91acebbe","last_reissued_at":"2026-07-05T11:30:11.472896Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:30:11.472896Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.00598","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":"2026-07-05T11:30:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NZyCZqgsfOTY7GOrklmcJlKOd0sh9dMHUwBy/GGTFkY/7cDr2+XsEBnxIsaoqWi1FpiXgCwqUezfj7mF3/24Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T10:21:26.375516Z"},"content_sha256":"3a47e948aafba347787e6eacbf78c7ca68a1afaed5a73b2a212c127f9dc55a2a","schema_version":"1.0","event_id":"sha256:3a47e948aafba347787e6eacbf78c7ca68a1afaed5a73b2a212c127f9dc55a2a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:62Z7OMSUVXOSY36PZS7RAN5YXG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-resolution spatial memory requires grid-cell-like neural codes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","cs.SC"],"primary_cat":"cs.NE","authors_text":"Christopher J. Kymn, Elisabetta Chicca, Friedrich T. Sommer, Hugh Greatorex, Madison Cotteret, Martin Ziegler","submitted_at":"2025-07-01T09:29:05Z","abstract_excerpt":"Continuous attractor networks (CANs) are widely used to model how the brain temporarily retains continuous behavioural variables via persistent recurrent activity, such as an animal's position in an environment. However, this memory mechanism is very sensitive to even small imperfections, such as noise or heterogeneity, which are both common in biological systems. Previous work has shown that discretising the continuum into a finite set of discrete attractor states provides robustness to these imperfections, but necessarily reduces the resolution of the represented variable, creating a dilemma"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.00598","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/2507.00598/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":"2026-07-05T11:30:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ddt5B4KwOi8yjFW1G+G1cuHU1abcVMUEgu/cLgIDbfIx7hiLAPR+VP8yyl/JECRKMSsMVQAv8G1VZVRo/MNxBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T10:21:26.376059Z"},"content_sha256":"70cbce8229a2cbca2966d964fd6dbc27c84d45f83d9f7e56110b81039b5bfedb","schema_version":"1.0","event_id":"sha256:70cbce8229a2cbca2966d964fd6dbc27c84d45f83d9f7e56110b81039b5bfedb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/62Z7OMSUVXOSY36PZS7RAN5YXG/bundle.json","state_url":"https://pith.science/pith/62Z7OMSUVXOSY36PZS7RAN5YXG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/62Z7OMSUVXOSY36PZS7RAN5YXG/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":"2026-08-04T10:21:26Z","links":{"resolver":"https://pith.science/pith/62Z7OMSUVXOSY36PZS7RAN5YXG","bundle":"https://pith.science/pith/62Z7OMSUVXOSY36PZS7RAN5YXG/bundle.json","state":"https://pith.science/pith/62Z7OMSUVXOSY36PZS7RAN5YXG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/62Z7OMSUVXOSY36PZS7RAN5YXG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:62Z7OMSUVXOSY36PZS7RAN5YXG","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":"db7a481049fdf134709494d995db0e01fe9665ef67a90f1fc967848ed844bd99","cross_cats_sorted":["cs.AI","cs.SC"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.NE","submitted_at":"2025-07-01T09:29:05Z","title_canon_sha256":"2e615922c181a74b0939645d8cca286134f61b45bbf6014d90954f71cfcf5c19"},"schema_version":"1.0","source":{"id":"2507.00598","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.00598","created_at":"2026-07-05T11:30:11Z"},{"alias_kind":"arxiv_version","alias_value":"2507.00598v1","created_at":"2026-07-05T11:30:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.00598","created_at":"2026-07-05T11:30:11Z"},{"alias_kind":"pith_short_12","alias_value":"62Z7OMSUVXOS","created_at":"2026-07-05T11:30:11Z"},{"alias_kind":"pith_short_16","alias_value":"62Z7OMSUVXOSY36P","created_at":"2026-07-05T11:30:11Z"},{"alias_kind":"pith_short_8","alias_value":"62Z7OMSU","created_at":"2026-07-05T11:30:11Z"}],"graph_snapshots":[{"event_id":"sha256:70cbce8229a2cbca2966d964fd6dbc27c84d45f83d9f7e56110b81039b5bfedb","target":"graph","created_at":"2026-07-05T11:30:11Z","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/2507.00598/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Continuous attractor networks (CANs) are widely used to model how the brain temporarily retains continuous behavioural variables via persistent recurrent activity, such as an animal's position in an environment. However, this memory mechanism is very sensitive to even small imperfections, such as noise or heterogeneity, which are both common in biological systems. Previous work has shown that discretising the continuum into a finite set of discrete attractor states provides robustness to these imperfections, but necessarily reduces the resolution of the represented variable, creating a dilemma","authors_text":"Christopher J. Kymn, Elisabetta Chicca, Friedrich T. Sommer, Hugh Greatorex, Madison Cotteret, Martin Ziegler","cross_cats":["cs.AI","cs.SC"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.NE","submitted_at":"2025-07-01T09:29:05Z","title":"High-resolution spatial memory requires grid-cell-like neural codes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.00598","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":"sha256:3a47e948aafba347787e6eacbf78c7ca68a1afaed5a73b2a212c127f9dc55a2a","target":"record","created_at":"2026-07-05T11:30:11Z","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":"db7a481049fdf134709494d995db0e01fe9665ef67a90f1fc967848ed844bd99","cross_cats_sorted":["cs.AI","cs.SC"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.NE","submitted_at":"2025-07-01T09:29:05Z","title_canon_sha256":"2e615922c181a74b0939645d8cca286134f61b45bbf6014d90954f71cfcf5c19"},"schema_version":"1.0","source":{"id":"2507.00598","kind":"arxiv","version":1}},"canonical_sha256":"f6b3f73254addd2c6fcfccbf1037b8b9a7ab71629395ada831f8962a91acebbe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f6b3f73254addd2c6fcfccbf1037b8b9a7ab71629395ada831f8962a91acebbe","first_computed_at":"2026-07-05T11:30:11.472896Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:30:11.472896Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZQsN6ES4W3FrdTy9RYDWsXCu25wFmFHHBSmASy8IhV79AG/xA23V2PfpkJ+W1JG9DBgzZQE+JtHJnm11V1qRAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:30:11.473345Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.00598","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a47e948aafba347787e6eacbf78c7ca68a1afaed5a73b2a212c127f9dc55a2a","sha256:70cbce8229a2cbca2966d964fd6dbc27c84d45f83d9f7e56110b81039b5bfedb"],"state_sha256":"fe3918a5dde5f1f918f522942f0dcdbe7ed5c1a5f67a0d4372a31e9eeb554110"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2ODLoI36ECYEeMoP30zY+gE6g2qtPBkcg4EeFd6Fpb9zvHt9tprwDoMALMKbExsvQhd77+172PGzZbl4uv2ZBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T10:21:26.380037Z","bundle_sha256":"fb67246494a5ecd137ba4a596c0eaa26c24b1af7990f48a2c2d44c72ce84b9ba"}}