{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:YTTLNDWCC53EIBAIICAIAOTZPR","short_pith_number":"pith:YTTLNDWC","canonical_record":{"source":{"id":"1907.02351","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2019-07-04T12:14:30Z","cross_cats_sorted":["cs.ET"],"title_canon_sha256":"8f09c63ac4f7e4d98379146f783e2812b39a5b2f5db4054be09b19515a1d54e0","abstract_canon_sha256":"0b4d4ad066ba9143ddcd4bbd53ad0fcb3ac5022c151ec693b35d91ef0fc9918a"},"schema_version":"1.0"},"canonical_sha256":"c4e6b68ec217764404084080803a797c54125ab616bebf04a0d36c34e7b08c11","source":{"kind":"arxiv","id":"1907.02351","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.02351","created_at":"2026-05-17T23:41:28Z"},{"alias_kind":"arxiv_version","alias_value":"1907.02351v1","created_at":"2026-05-17T23:41:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.02351","created_at":"2026-05-17T23:41:28Z"},{"alias_kind":"pith_short_12","alias_value":"YTTLNDWCC53E","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"YTTLNDWCC53EIBAI","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"YTTLNDWC","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:YTTLNDWCC53EIBAIICAIAOTZPR","target":"record","payload":{"canonical_record":{"source":{"id":"1907.02351","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2019-07-04T12:14:30Z","cross_cats_sorted":["cs.ET"],"title_canon_sha256":"8f09c63ac4f7e4d98379146f783e2812b39a5b2f5db4054be09b19515a1d54e0","abstract_canon_sha256":"0b4d4ad066ba9143ddcd4bbd53ad0fcb3ac5022c151ec693b35d91ef0fc9918a"},"schema_version":"1.0"},"canonical_sha256":"c4e6b68ec217764404084080803a797c54125ab616bebf04a0d36c34e7b08c11","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:41:28.862246Z","signature_b64":"7plsYmd5gG18C9UK2FsHzuBaft6ON0mTS9SBmBg0qGdrMF/MWY0OhIJhT2UxPtkJW3UcxTB6OCNadZCqfSZpAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4e6b68ec217764404084080803a797c54125ab616bebf04a0d36c34e7b08c11","last_reissued_at":"2026-05-17T23:41:28.861495Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:41:28.861495Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.02351","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":"2026-05-17T23:41:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CoSyVX+zC6WatRKXYfewyoWKX5Y3C1w2jwfrRfYDbV3TooRDhYBAyzPHZRZp6yO54IO6Db+bMmnM5LHn12/ABQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:56:14.918836Z"},"content_sha256":"bf4a7f0281dfa70c1b5a70733c5005257ddf3b77bdb5eee4fff15c8d81a452fa","schema_version":"1.0","event_id":"sha256:bf4a7f0281dfa70c1b5a70733c5005257ddf3b77bdb5eee4fff15c8d81a452fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:YTTLNDWCC53EIBAIICAIAOTZPR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evaluation of the criticality of in vitro neuronal networks: Toward an assessment of computational capacity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.ET"],"primary_cat":"q-bio.NC","authors_text":"Axel Sandvig, Gunnar Tufte, Hugo Lewi Hammer, Ioanna Sandvig, Kristine Heiney, Stefano Nichele, Vibeke Devold Valderhaug","submitted_at":"2019-07-04T12:14:30Z","abstract_excerpt":"Novel computing hardwares are necessary to keep up with today's increasing demand for data storage and processing power. In this research project, we turn to the brain for inspiration to develop novel computing substrates that are self-learning, scalable, energy-efficient, and fault-tolerant. The overarching aim of this work is to develop computational models that are able to reproduce target behaviors observed in in vitro neuronal networks. These models will be ultimately be used to aid in the realization of these behaviors in a more engineerable substrate: an array of nanomagnets. The target"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.02351","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":"2026-05-17T23:41:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KKSV49STcU89kEJ2t/yijlZSdiwdPW3fyzaM78xMGpiwpkTvO+QX/OI3vtMYegbdLcGgm+/992ALrKt5j02eDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:56:14.919180Z"},"content_sha256":"3aed65ff2c4ce1bd4429ebff028b3e25ce1c6a9e9cabcdb94751bca43ac5b853","schema_version":"1.0","event_id":"sha256:3aed65ff2c4ce1bd4429ebff028b3e25ce1c6a9e9cabcdb94751bca43ac5b853"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YTTLNDWCC53EIBAIICAIAOTZPR/bundle.json","state_url":"https://pith.science/pith/YTTLNDWCC53EIBAIICAIAOTZPR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YTTLNDWCC53EIBAIICAIAOTZPR/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":"2026-05-28T21:56:14Z","links":{"resolver":"https://pith.science/pith/YTTLNDWCC53EIBAIICAIAOTZPR","bundle":"https://pith.science/pith/YTTLNDWCC53EIBAIICAIAOTZPR/bundle.json","state":"https://pith.science/pith/YTTLNDWCC53EIBAIICAIAOTZPR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YTTLNDWCC53EIBAIICAIAOTZPR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:YTTLNDWCC53EIBAIICAIAOTZPR","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":"0b4d4ad066ba9143ddcd4bbd53ad0fcb3ac5022c151ec693b35d91ef0fc9918a","cross_cats_sorted":["cs.ET"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2019-07-04T12:14:30Z","title_canon_sha256":"8f09c63ac4f7e4d98379146f783e2812b39a5b2f5db4054be09b19515a1d54e0"},"schema_version":"1.0","source":{"id":"1907.02351","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.02351","created_at":"2026-05-17T23:41:28Z"},{"alias_kind":"arxiv_version","alias_value":"1907.02351v1","created_at":"2026-05-17T23:41:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.02351","created_at":"2026-05-17T23:41:28Z"},{"alias_kind":"pith_short_12","alias_value":"YTTLNDWCC53E","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"YTTLNDWCC53EIBAI","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"YTTLNDWC","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:3aed65ff2c4ce1bd4429ebff028b3e25ce1c6a9e9cabcdb94751bca43ac5b853","target":"graph","created_at":"2026-05-17T23:41:28Z","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":"Novel computing hardwares are necessary to keep up with today's increasing demand for data storage and processing power. In this research project, we turn to the brain for inspiration to develop novel computing substrates that are self-learning, scalable, energy-efficient, and fault-tolerant. The overarching aim of this work is to develop computational models that are able to reproduce target behaviors observed in in vitro neuronal networks. These models will be ultimately be used to aid in the realization of these behaviors in a more engineerable substrate: an array of nanomagnets. The target","authors_text":"Axel Sandvig, Gunnar Tufte, Hugo Lewi Hammer, Ioanna Sandvig, Kristine Heiney, Stefano Nichele, Vibeke Devold Valderhaug","cross_cats":["cs.ET"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2019-07-04T12:14:30Z","title":"Evaluation of the criticality of in vitro neuronal networks: Toward an assessment of computational capacity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.02351","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:bf4a7f0281dfa70c1b5a70733c5005257ddf3b77bdb5eee4fff15c8d81a452fa","target":"record","created_at":"2026-05-17T23:41:28Z","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":"0b4d4ad066ba9143ddcd4bbd53ad0fcb3ac5022c151ec693b35d91ef0fc9918a","cross_cats_sorted":["cs.ET"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2019-07-04T12:14:30Z","title_canon_sha256":"8f09c63ac4f7e4d98379146f783e2812b39a5b2f5db4054be09b19515a1d54e0"},"schema_version":"1.0","source":{"id":"1907.02351","kind":"arxiv","version":1}},"canonical_sha256":"c4e6b68ec217764404084080803a797c54125ab616bebf04a0d36c34e7b08c11","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4e6b68ec217764404084080803a797c54125ab616bebf04a0d36c34e7b08c11","first_computed_at":"2026-05-17T23:41:28.861495Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:28.861495Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7plsYmd5gG18C9UK2FsHzuBaft6ON0mTS9SBmBg0qGdrMF/MWY0OhIJhT2UxPtkJW3UcxTB6OCNadZCqfSZpAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:28.862246Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.02351","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf4a7f0281dfa70c1b5a70733c5005257ddf3b77bdb5eee4fff15c8d81a452fa","sha256:3aed65ff2c4ce1bd4429ebff028b3e25ce1c6a9e9cabcdb94751bca43ac5b853"],"state_sha256":"85866b9d7b5524dcef5afdc2c2688a0c718fda040d25d28c12a5e886397442b5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HeVuuys+/7/O1z4VMwZDuOhKhtCZ6EtpTSfU+6t3MZiapr/75IXXHALUmjmSzKgARwcE0GM4s+aZ1EFtyLVwBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T21:56:14.921532Z","bundle_sha256":"cc600b72ffc3343d169d20b3b304f1ff9997b2bf0d3dc57151097fc2cbe40bfd"}}