{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:Q4NNIVKR5KUKDBXM7BAMALJ4MT","short_pith_number":"pith:Q4NNIVKR","canonical_record":{"source":{"id":"2505.23464","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2025-05-29T14:15:25Z","cross_cats_sorted":[],"title_canon_sha256":"1dc5d79ad1bc7b8e362feba6f3b51ea65067368757015201004f0ca956e0562f","abstract_canon_sha256":"21b2ad537fdd4e4a0f33f7635b807fbc393635dfa17b09f515713b9a44332174"},"schema_version":"1.0"},"canonical_sha256":"871ad45551eaa8a186ecf840c02d3c64f36aaf128b467ee57797399c0347ab8e","source":{"kind":"arxiv","id":"2505.23464","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.23464","created_at":"2026-07-05T11:12:02Z"},{"alias_kind":"arxiv_version","alias_value":"2505.23464v1","created_at":"2026-07-05T11:12:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.23464","created_at":"2026-07-05T11:12:02Z"},{"alias_kind":"pith_short_12","alias_value":"Q4NNIVKR5KUK","created_at":"2026-07-05T11:12:02Z"},{"alias_kind":"pith_short_16","alias_value":"Q4NNIVKR5KUKDBXM","created_at":"2026-07-05T11:12:02Z"},{"alias_kind":"pith_short_8","alias_value":"Q4NNIVKR","created_at":"2026-07-05T11:12:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:Q4NNIVKR5KUKDBXM7BAMALJ4MT","target":"record","payload":{"canonical_record":{"source":{"id":"2505.23464","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2025-05-29T14:15:25Z","cross_cats_sorted":[],"title_canon_sha256":"1dc5d79ad1bc7b8e362feba6f3b51ea65067368757015201004f0ca956e0562f","abstract_canon_sha256":"21b2ad537fdd4e4a0f33f7635b807fbc393635dfa17b09f515713b9a44332174"},"schema_version":"1.0"},"canonical_sha256":"871ad45551eaa8a186ecf840c02d3c64f36aaf128b467ee57797399c0347ab8e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:12:02.225156Z","signature_b64":"DZdNtSLyZgeSCnx6yCZyN+8e2YI7ANUXS2bHhOeZF6qBJ3qS/kPhXnU8OTvlc8bKwDsywK5gAYVD9//70HezAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"871ad45551eaa8a186ecf840c02d3c64f36aaf128b467ee57797399c0347ab8e","last_reissued_at":"2026-07-05T11:12:02.224631Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:12:02.224631Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.23464","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":"2026-07-05T11:12:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EzQ+FquGQclcRu3yJ1OgcvLP4JLRO4RJVg00jK9IdUlcWCiftVnxlWa6sq1IBIO+xaaus4+AFWWnxTbCChvnCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T02:54:42.466272Z"},"content_sha256":"6fcdc1eaf9a7dbf8b540e9752d25f6c217363834304079943f97d406fb000092","schema_version":"1.0","event_id":"sha256:6fcdc1eaf9a7dbf8b540e9752d25f6c217363834304079943f97d406fb000092"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:Q4NNIVKR5KUKDBXM7BAMALJ4MT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Trainable dynamical masking for readout-free optical computing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"E. Manuylovich, S. Bogdanov, S. K. Turitsyn","submitted_at":"2025-05-29T14:15:25Z","abstract_excerpt":"Nonlinear systems, transforming an input signal into a high-dimensional output feature space, can be used for non-conventional computing. This approach, however, requires a change of system parameters during training rather than coefficients in a software program. We propose here to use available off-the-shelf high-speed optical communication devices and technologies to implement a trainable dynamical mask in addition to or even instead of the traditional readout layer for extreme learning machine-based computing. The computational potential of the proposed approach is demonstrated with both r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.23464","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/2505.23464/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":"2026-07-05T11:12:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EpvoHBqnzIG3j0GZIeAItb32Xhb5s44ZFeIZmNbOAS4pvPjAKLJUXFmTI+cRNT7CznV7gXQipwiLwsB7k9CbDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T02:54:42.466771Z"},"content_sha256":"c4774ce41d79e13065a32ec5ebafc49425cbb11b8aabedbd87e823b133bbbf2c","schema_version":"1.0","event_id":"sha256:c4774ce41d79e13065a32ec5ebafc49425cbb11b8aabedbd87e823b133bbbf2c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q4NNIVKR5KUKDBXM7BAMALJ4MT/bundle.json","state_url":"https://pith.science/pith/Q4NNIVKR5KUKDBXM7BAMALJ4MT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q4NNIVKR5KUKDBXM7BAMALJ4MT/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":"2026-08-08T02:54:42Z","links":{"resolver":"https://pith.science/pith/Q4NNIVKR5KUKDBXM7BAMALJ4MT","bundle":"https://pith.science/pith/Q4NNIVKR5KUKDBXM7BAMALJ4MT/bundle.json","state":"https://pith.science/pith/Q4NNIVKR5KUKDBXM7BAMALJ4MT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q4NNIVKR5KUKDBXM7BAMALJ4MT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:Q4NNIVKR5KUKDBXM7BAMALJ4MT","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":"21b2ad537fdd4e4a0f33f7635b807fbc393635dfa17b09f515713b9a44332174","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2025-05-29T14:15:25Z","title_canon_sha256":"1dc5d79ad1bc7b8e362feba6f3b51ea65067368757015201004f0ca956e0562f"},"schema_version":"1.0","source":{"id":"2505.23464","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.23464","created_at":"2026-07-05T11:12:02Z"},{"alias_kind":"arxiv_version","alias_value":"2505.23464v1","created_at":"2026-07-05T11:12:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.23464","created_at":"2026-07-05T11:12:02Z"},{"alias_kind":"pith_short_12","alias_value":"Q4NNIVKR5KUK","created_at":"2026-07-05T11:12:02Z"},{"alias_kind":"pith_short_16","alias_value":"Q4NNIVKR5KUKDBXM","created_at":"2026-07-05T11:12:02Z"},{"alias_kind":"pith_short_8","alias_value":"Q4NNIVKR","created_at":"2026-07-05T11:12:02Z"}],"graph_snapshots":[{"event_id":"sha256:c4774ce41d79e13065a32ec5ebafc49425cbb11b8aabedbd87e823b133bbbf2c","target":"graph","created_at":"2026-07-05T11:12:02Z","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/2505.23464/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Nonlinear systems, transforming an input signal into a high-dimensional output feature space, can be used for non-conventional computing. This approach, however, requires a change of system parameters during training rather than coefficients in a software program. We propose here to use available off-the-shelf high-speed optical communication devices and technologies to implement a trainable dynamical mask in addition to or even instead of the traditional readout layer for extreme learning machine-based computing. The computational potential of the proposed approach is demonstrated with both r","authors_text":"E. Manuylovich, S. Bogdanov, S. K. Turitsyn","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2025-05-29T14:15:25Z","title":"Trainable dynamical masking for readout-free optical computing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.23464","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":"sha256:6fcdc1eaf9a7dbf8b540e9752d25f6c217363834304079943f97d406fb000092","target":"record","created_at":"2026-07-05T11:12:02Z","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":"21b2ad537fdd4e4a0f33f7635b807fbc393635dfa17b09f515713b9a44332174","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2025-05-29T14:15:25Z","title_canon_sha256":"1dc5d79ad1bc7b8e362feba6f3b51ea65067368757015201004f0ca956e0562f"},"schema_version":"1.0","source":{"id":"2505.23464","kind":"arxiv","version":1}},"canonical_sha256":"871ad45551eaa8a186ecf840c02d3c64f36aaf128b467ee57797399c0347ab8e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"871ad45551eaa8a186ecf840c02d3c64f36aaf128b467ee57797399c0347ab8e","first_computed_at":"2026-07-05T11:12:02.224631Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:12:02.224631Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DZdNtSLyZgeSCnx6yCZyN+8e2YI7ANUXS2bHhOeZF6qBJ3qS/kPhXnU8OTvlc8bKwDsywK5gAYVD9//70HezAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:12:02.225156Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.23464","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6fcdc1eaf9a7dbf8b540e9752d25f6c217363834304079943f97d406fb000092","sha256:c4774ce41d79e13065a32ec5ebafc49425cbb11b8aabedbd87e823b133bbbf2c"],"state_sha256":"258ee271d8a09dfeaf3f523cec7d960ed34c1cfd67d4800cfcd07ad04e25caaf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wnrdf6LbZMkIpwM9dmyJk1uw/iSNtfBo+d89QS1Ff9Cvw7SKT8Kk0tBdJwjxxuexM1vugiWlCP3FTI/Uw+BVDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T02:54:42.470387Z","bundle_sha256":"b36c3e4f0f28392798b3ac39f1346486e7fa32539428f0cc3e213be45506997d"}}