{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:UV5OBTCEAWLLW4S552BEE76FOI","short_pith_number":"pith:UV5OBTCE","canonical_record":{"source":{"id":"1903.03807","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-03-09T14:07:44Z","cross_cats_sorted":[],"title_canon_sha256":"b4240415992368952164d1acad2e4b33feef96c6628343aaff85c4c9e220f670","abstract_canon_sha256":"07d1f7b122911b0e4291a15cb04edd69736fb836b30122e1b9cc2ea9e28e5a7e"},"schema_version":"1.0"},"canonical_sha256":"a57ae0cc440596bb725dee82427fc57203f6594ca3a3ab6f355917841f043d0d","source":{"kind":"arxiv","id":"1903.03807","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.03807","created_at":"2026-07-05T00:13:42Z"},{"alias_kind":"arxiv_version","alias_value":"1903.03807v1","created_at":"2026-07-05T00:13:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.03807","created_at":"2026-07-05T00:13:42Z"},{"alias_kind":"pith_short_12","alias_value":"UV5OBTCEAWLL","created_at":"2026-07-05T00:13:42Z"},{"alias_kind":"pith_short_16","alias_value":"UV5OBTCEAWLLW4S5","created_at":"2026-07-05T00:13:42Z"},{"alias_kind":"pith_short_8","alias_value":"UV5OBTCE","created_at":"2026-07-05T00:13:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:UV5OBTCEAWLLW4S552BEE76FOI","target":"record","payload":{"canonical_record":{"source":{"id":"1903.03807","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-03-09T14:07:44Z","cross_cats_sorted":[],"title_canon_sha256":"b4240415992368952164d1acad2e4b33feef96c6628343aaff85c4c9e220f670","abstract_canon_sha256":"07d1f7b122911b0e4291a15cb04edd69736fb836b30122e1b9cc2ea9e28e5a7e"},"schema_version":"1.0"},"canonical_sha256":"a57ae0cc440596bb725dee82427fc57203f6594ca3a3ab6f355917841f043d0d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:13:42.945989Z","signature_b64":"r50IbBBjqDQqsE1h1uAs+ni6oOpQ91SVqJdb4rG4q1dLYGYrn5J9Hd8hOPwIhzHUja/XZ1sATbrlAFiQ2eWECg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a57ae0cc440596bb725dee82427fc57203f6594ca3a3ab6f355917841f043d0d","last_reissued_at":"2026-07-05T00:13:42.945570Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:13:42.945570Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.03807","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":"2026-07-05T00:13:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ApO4eyzb83OtNELGUgWq53jMximyE5YQFp8v7IJ97athfPalyhkhLL5o/nvMtdowzKByBQbPBLVMYQ4AS6H0AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T23:30:52.629879Z"},"content_sha256":"a92035627dbad11eb4d0deabce80d9ff75fca42f190a0dee0d3b5e570adcf66d","schema_version":"1.0","event_id":"sha256:a92035627dbad11eb4d0deabce80d9ff75fca42f190a0dee0d3b5e570adcf66d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:UV5OBTCEAWLLW4S552BEE76FOI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Non-reciprocal robotic metamaterials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"Corentin Coulais, Edan Lerner, Martin Brandenbourger, Xander Locsin","submitted_at":"2019-03-09T14:07:44Z","abstract_excerpt":"Non-reciprocal transmission of motion is potentially highly beneficial to a wide range of applications, ranging from wave guiding, to shock and vibration damping and energy harvesting. To date, large levels of non-reciprocity have been realized using broken spatial or temporal symmetries, yet only in the vicinity of resonances or using nonlinearities, thereby nonreciprocal transmission remains limited to narrow ranges of frequencies or input magnitudes and sensitive to attenuation. Here, we devise a novel type of robotic mechanical metamaterials wherein we use local control loops to break reci"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.03807","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/1903.03807/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":"2026-07-05T00:13:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bEV36Kka0udCjKQMfhgvEf2ocmPsE1LqNn1OTwlGpc2PTB6ExvwzCt7CcKWgyF2UbfdEx1UoMICqANhPYM+lBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T23:30:52.630272Z"},"content_sha256":"28361c126cea4a1ccdd34a667ef13f8eec10e972003271a67967b6c622544473","schema_version":"1.0","event_id":"sha256:28361c126cea4a1ccdd34a667ef13f8eec10e972003271a67967b6c622544473"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UV5OBTCEAWLLW4S552BEE76FOI/bundle.json","state_url":"https://pith.science/pith/UV5OBTCEAWLLW4S552BEE76FOI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UV5OBTCEAWLLW4S552BEE76FOI/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":"2026-08-03T23:30:52Z","links":{"resolver":"https://pith.science/pith/UV5OBTCEAWLLW4S552BEE76FOI","bundle":"https://pith.science/pith/UV5OBTCEAWLLW4S552BEE76FOI/bundle.json","state":"https://pith.science/pith/UV5OBTCEAWLLW4S552BEE76FOI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UV5OBTCEAWLLW4S552BEE76FOI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UV5OBTCEAWLLW4S552BEE76FOI","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":"07d1f7b122911b0e4291a15cb04edd69736fb836b30122e1b9cc2ea9e28e5a7e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-03-09T14:07:44Z","title_canon_sha256":"b4240415992368952164d1acad2e4b33feef96c6628343aaff85c4c9e220f670"},"schema_version":"1.0","source":{"id":"1903.03807","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.03807","created_at":"2026-07-05T00:13:42Z"},{"alias_kind":"arxiv_version","alias_value":"1903.03807v1","created_at":"2026-07-05T00:13:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.03807","created_at":"2026-07-05T00:13:42Z"},{"alias_kind":"pith_short_12","alias_value":"UV5OBTCEAWLL","created_at":"2026-07-05T00:13:42Z"},{"alias_kind":"pith_short_16","alias_value":"UV5OBTCEAWLLW4S5","created_at":"2026-07-05T00:13:42Z"},{"alias_kind":"pith_short_8","alias_value":"UV5OBTCE","created_at":"2026-07-05T00:13:42Z"}],"graph_snapshots":[{"event_id":"sha256:28361c126cea4a1ccdd34a667ef13f8eec10e972003271a67967b6c622544473","target":"graph","created_at":"2026-07-05T00:13:42Z","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/1903.03807/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Non-reciprocal transmission of motion is potentially highly beneficial to a wide range of applications, ranging from wave guiding, to shock and vibration damping and energy harvesting. To date, large levels of non-reciprocity have been realized using broken spatial or temporal symmetries, yet only in the vicinity of resonances or using nonlinearities, thereby nonreciprocal transmission remains limited to narrow ranges of frequencies or input magnitudes and sensitive to attenuation. Here, we devise a novel type of robotic mechanical metamaterials wherein we use local control loops to break reci","authors_text":"Corentin Coulais, Edan Lerner, Martin Brandenbourger, Xander Locsin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-03-09T14:07:44Z","title":"Non-reciprocal robotic metamaterials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.03807","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:a92035627dbad11eb4d0deabce80d9ff75fca42f190a0dee0d3b5e570adcf66d","target":"record","created_at":"2026-07-05T00:13:42Z","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":"07d1f7b122911b0e4291a15cb04edd69736fb836b30122e1b9cc2ea9e28e5a7e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-03-09T14:07:44Z","title_canon_sha256":"b4240415992368952164d1acad2e4b33feef96c6628343aaff85c4c9e220f670"},"schema_version":"1.0","source":{"id":"1903.03807","kind":"arxiv","version":1}},"canonical_sha256":"a57ae0cc440596bb725dee82427fc57203f6594ca3a3ab6f355917841f043d0d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a57ae0cc440596bb725dee82427fc57203f6594ca3a3ab6f355917841f043d0d","first_computed_at":"2026-07-05T00:13:42.945570Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:13:42.945570Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r50IbBBjqDQqsE1h1uAs+ni6oOpQ91SVqJdb4rG4q1dLYGYrn5J9Hd8hOPwIhzHUja/XZ1sATbrlAFiQ2eWECg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:13:42.945989Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.03807","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a92035627dbad11eb4d0deabce80d9ff75fca42f190a0dee0d3b5e570adcf66d","sha256:28361c126cea4a1ccdd34a667ef13f8eec10e972003271a67967b6c622544473"],"state_sha256":"7f4b0a25f57f55418d4477c68512f9f38cf04845651e2af941475948ebc1a736"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o2ZzbJpSnJSNe1kNaAv3dhRMt4bIvERVsO41HyNrkvoH/BLvbftYSw32cx/ziAkiOqfMvVPhVliMPm4yya2sDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T23:30:52.632772Z","bundle_sha256":"cb4863289fadcc040b53fbc1502a26754a155c36a7fbf17206ea2f437ae27fbd"}}