{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:P4CGAEPDHXCU2FCVQPA55RHKLP","short_pith_number":"pith:P4CGAEPD","canonical_record":{"source":{"id":"1408.6486","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-08-27T18:32:20Z","cross_cats_sorted":[],"title_canon_sha256":"d943147a9d92eff56a8ff02aa0276d26d7c219327cae8a5e5d664f7142fd808b","abstract_canon_sha256":"e0004482af69580c8ceea3a1ab719acfdb8e81874286202cf1f09bbb8d605192"},"schema_version":"1.0"},"canonical_sha256":"7f046011e33dc54d145583c1dec4ea5beb8b46791e2820a9d819c0be30b61025","source":{"kind":"arxiv","id":"1408.6486","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.6486","created_at":"2026-05-18T02:28:22Z"},{"alias_kind":"arxiv_version","alias_value":"1408.6486v1","created_at":"2026-05-18T02:28:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.6486","created_at":"2026-05-18T02:28:22Z"},{"alias_kind":"pith_short_12","alias_value":"P4CGAEPDHXCU","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"P4CGAEPDHXCU2FCV","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"P4CGAEPD","created_at":"2026-05-18T12:28:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:P4CGAEPDHXCU2FCVQPA55RHKLP","target":"record","payload":{"canonical_record":{"source":{"id":"1408.6486","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-08-27T18:32:20Z","cross_cats_sorted":[],"title_canon_sha256":"d943147a9d92eff56a8ff02aa0276d26d7c219327cae8a5e5d664f7142fd808b","abstract_canon_sha256":"e0004482af69580c8ceea3a1ab719acfdb8e81874286202cf1f09bbb8d605192"},"schema_version":"1.0"},"canonical_sha256":"7f046011e33dc54d145583c1dec4ea5beb8b46791e2820a9d819c0be30b61025","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:28:22.796489Z","signature_b64":"XjHJrF5yHkBsEa9AqSkbJwS96i7/acO+sZdKH0Q4WNBaGfaNjHZjPChsPknkhTfNVyDq9mFjUzZEbIp06u90DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7f046011e33dc54d145583c1dec4ea5beb8b46791e2820a9d819c0be30b61025","last_reissued_at":"2026-05-18T02:28:22.795927Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:28:22.795927Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.6486","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":"2026-05-18T02:28:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"asIDQnkZWpeeE9IHqb9zLIO+1DKILIVwnoXUjkeZdMrngaBmmHpcAQc7TGALa+3tdMg1vnA3dlRC/k+qXosMBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:02:27.221662Z"},"content_sha256":"2c53a51acffee179b3706e70861f11e154197875b6a653065467b3c8357029b8","schema_version":"1.0","event_id":"sha256:2c53a51acffee179b3706e70861f11e154197875b6a653065467b3c8357029b8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:P4CGAEPDHXCU2FCVQPA55RHKLP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-oscillator model of trapped-modes interaction in a nonlinear bilayer fish-scale metamaterial","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Bogdan A. Kochetov, Lyudmila A. Kochetova, Pavel L. Mladyonov, Sergey L. Prosvirnin, Vladimir R. Tuz","submitted_at":"2014-08-27T18:32:20Z","abstract_excerpt":"We discuss the similarity between the nature of resonant oscillations in two nonlinear systems, namely, a chain of coupled Duffing oscillators and a bilayer fish-scale metamaterial. In such systems two different resonant states arise which differ in their spectral lines. The spectral line of the first resonant state has a Lorentzian form, while the second one has a Fano form. This difference leads to a specific nonlinear response of the systems which manifests itself in appearance of closed loops in spectral lines and bending and overlapping of resonant curves. Conditions of achieving bistabil"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.6486","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":"2026-05-18T02:28:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YrZFEvvvGygF+Wj0tL4RfF0ZFrSeEXEWCe2zqY6/IYe6N9a0LaPVov9lm70wz5bVIqToF/fgPZSslVeNpFSzBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:02:27.222005Z"},"content_sha256":"986e17c372600b74b340e3ee19770df568ae081fbc933a65f6c259424ed51f0c","schema_version":"1.0","event_id":"sha256:986e17c372600b74b340e3ee19770df568ae081fbc933a65f6c259424ed51f0c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P4CGAEPDHXCU2FCVQPA55RHKLP/bundle.json","state_url":"https://pith.science/pith/P4CGAEPDHXCU2FCVQPA55RHKLP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P4CGAEPDHXCU2FCVQPA55RHKLP/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":"2026-06-01T17:02:27Z","links":{"resolver":"https://pith.science/pith/P4CGAEPDHXCU2FCVQPA55RHKLP","bundle":"https://pith.science/pith/P4CGAEPDHXCU2FCVQPA55RHKLP/bundle.json","state":"https://pith.science/pith/P4CGAEPDHXCU2FCVQPA55RHKLP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P4CGAEPDHXCU2FCVQPA55RHKLP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:P4CGAEPDHXCU2FCVQPA55RHKLP","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":"e0004482af69580c8ceea3a1ab719acfdb8e81874286202cf1f09bbb8d605192","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-08-27T18:32:20Z","title_canon_sha256":"d943147a9d92eff56a8ff02aa0276d26d7c219327cae8a5e5d664f7142fd808b"},"schema_version":"1.0","source":{"id":"1408.6486","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.6486","created_at":"2026-05-18T02:28:22Z"},{"alias_kind":"arxiv_version","alias_value":"1408.6486v1","created_at":"2026-05-18T02:28:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.6486","created_at":"2026-05-18T02:28:22Z"},{"alias_kind":"pith_short_12","alias_value":"P4CGAEPDHXCU","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"P4CGAEPDHXCU2FCV","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"P4CGAEPD","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:986e17c372600b74b340e3ee19770df568ae081fbc933a65f6c259424ed51f0c","target":"graph","created_at":"2026-05-18T02:28:22Z","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":"We discuss the similarity between the nature of resonant oscillations in two nonlinear systems, namely, a chain of coupled Duffing oscillators and a bilayer fish-scale metamaterial. In such systems two different resonant states arise which differ in their spectral lines. The spectral line of the first resonant state has a Lorentzian form, while the second one has a Fano form. This difference leads to a specific nonlinear response of the systems which manifests itself in appearance of closed loops in spectral lines and bending and overlapping of resonant curves. Conditions of achieving bistabil","authors_text":"Bogdan A. Kochetov, Lyudmila A. Kochetova, Pavel L. Mladyonov, Sergey L. Prosvirnin, Vladimir R. Tuz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-08-27T18:32:20Z","title":"Two-oscillator model of trapped-modes interaction in a nonlinear bilayer fish-scale metamaterial"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.6486","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":"sha256:2c53a51acffee179b3706e70861f11e154197875b6a653065467b3c8357029b8","target":"record","created_at":"2026-05-18T02:28:22Z","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":"e0004482af69580c8ceea3a1ab719acfdb8e81874286202cf1f09bbb8d605192","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-08-27T18:32:20Z","title_canon_sha256":"d943147a9d92eff56a8ff02aa0276d26d7c219327cae8a5e5d664f7142fd808b"},"schema_version":"1.0","source":{"id":"1408.6486","kind":"arxiv","version":1}},"canonical_sha256":"7f046011e33dc54d145583c1dec4ea5beb8b46791e2820a9d819c0be30b61025","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f046011e33dc54d145583c1dec4ea5beb8b46791e2820a9d819c0be30b61025","first_computed_at":"2026-05-18T02:28:22.795927Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:28:22.795927Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XjHJrF5yHkBsEa9AqSkbJwS96i7/acO+sZdKH0Q4WNBaGfaNjHZjPChsPknkhTfNVyDq9mFjUzZEbIp06u90DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:28:22.796489Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.6486","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2c53a51acffee179b3706e70861f11e154197875b6a653065467b3c8357029b8","sha256:986e17c372600b74b340e3ee19770df568ae081fbc933a65f6c259424ed51f0c"],"state_sha256":"d946241da4aa05ff39c8ab691cea130da089857ba2194578640bb208142294b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nwevuk1IMOdhb2UI7nywq0RoAmSelK5ITlS4qxNlV7K71urDKJeB96DJw9FSQSA7hE4ZDx7k4Y0hCfPM1jVKCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T17:02:27.224200Z","bundle_sha256":"d5bc8fdd75dfe4cd3f1f4476186266b92030e2774b91a7985d2d0bcd87ce1960"}}