{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:CHLHKTDJYVZ4MXNVSCJO2A4B5D","short_pith_number":"pith:CHLHKTDJ","canonical_record":{"source":{"id":"1206.4577","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-06-20T18:43:56Z","cross_cats_sorted":["physics.class-ph"],"title_canon_sha256":"5db98680fbd961d77189e13e0faab998af584ff9f664e615ff758a4a59d13b44","abstract_canon_sha256":"7d5ab19a7e52970e92e27b4ea0251729cb7ba561d353ff7fb13b0c01c387775c"},"schema_version":"1.0"},"canonical_sha256":"11d6754c69c573c65db59092ed0381e8daf04f25a01a2bef7e342a23d63645a1","source":{"kind":"arxiv","id":"1206.4577","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.4577","created_at":"2026-05-18T02:32:39Z"},{"alias_kind":"arxiv_version","alias_value":"1206.4577v2","created_at":"2026-05-18T02:32:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.4577","created_at":"2026-05-18T02:32:39Z"},{"alias_kind":"pith_short_12","alias_value":"CHLHKTDJYVZ4","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CHLHKTDJYVZ4MXNV","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CHLHKTDJ","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:CHLHKTDJYVZ4MXNVSCJO2A4B5D","target":"record","payload":{"canonical_record":{"source":{"id":"1206.4577","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-06-20T18:43:56Z","cross_cats_sorted":["physics.class-ph"],"title_canon_sha256":"5db98680fbd961d77189e13e0faab998af584ff9f664e615ff758a4a59d13b44","abstract_canon_sha256":"7d5ab19a7e52970e92e27b4ea0251729cb7ba561d353ff7fb13b0c01c387775c"},"schema_version":"1.0"},"canonical_sha256":"11d6754c69c573c65db59092ed0381e8daf04f25a01a2bef7e342a23d63645a1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:32:39.269024Z","signature_b64":"zYGFP9O7iztrR1H0oAgua6+MDjWQcwNcAaUce73eAiVMjTBsjhS3NRmW1pCO5QKd4WqBenDO2TF0TPz7xE/TAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11d6754c69c573c65db59092ed0381e8daf04f25a01a2bef7e342a23d63645a1","last_reissued_at":"2026-05-18T02:32:39.268583Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:32:39.268583Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.4577","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:32:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fAeBU6OZ4hlJ5NT6AgWYp78pVxMIb5vf31Pl9B1QWgWFscL2L0sGBM9lLXH4HsoRLMtjxWUcVbw6ExbXCacICw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T07:08:10.738745Z"},"content_sha256":"84209f03f9f9b590791922fc59854a7b82a798d0de535bfc238206ecf73e534e","schema_version":"1.0","event_id":"sha256:84209f03f9f9b590791922fc59854a7b82a798d0de535bfc238206ecf73e534e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:CHLHKTDJYVZ4MXNVSCJO2A4B5D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Metadamping: An emergent phenomenon in dissipative metamaterials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.class-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Mahmoud I. Hussein, Michael J. Frazier","submitted_at":"2012-06-20T18:43:56Z","abstract_excerpt":"We theoretically demonstrate the concept of metadamping in dissipative metamaterials. We consider an infinite mass-spring chain with repeated local resonators and a statically equivalent periodic chain whose wave propagation characteristics are based on Bragg scattering. For each system we introduce identical viscous damping (dashpot) elements and compare the damping ratio associated with all Bloch modes. We find that the locally resonant metamaterial exhibits higher dissipation overall which indicates a damping emergence phenomena due to the presence of local resonance. We conclude our invest"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.4577","kind":"arxiv","version":2},"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":"2026-05-18T02:32:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6reHDF7w68tMAZPdTHDhCXUP2RSufvYb76hZB3kblfIvujFW5xruGaryRGPrnRhuEo9sknKcPxrgfEzKFMWFCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T07:08:10.739242Z"},"content_sha256":"eea13115db96871fd50a7fff15007694a8ae8b325d2cc15714a15167def9370e","schema_version":"1.0","event_id":"sha256:eea13115db96871fd50a7fff15007694a8ae8b325d2cc15714a15167def9370e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CHLHKTDJYVZ4MXNVSCJO2A4B5D/bundle.json","state_url":"https://pith.science/pith/CHLHKTDJYVZ4MXNVSCJO2A4B5D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CHLHKTDJYVZ4MXNVSCJO2A4B5D/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":"2026-06-04T07:08:10Z","links":{"resolver":"https://pith.science/pith/CHLHKTDJYVZ4MXNVSCJO2A4B5D","bundle":"https://pith.science/pith/CHLHKTDJYVZ4MXNVSCJO2A4B5D/bundle.json","state":"https://pith.science/pith/CHLHKTDJYVZ4MXNVSCJO2A4B5D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CHLHKTDJYVZ4MXNVSCJO2A4B5D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:CHLHKTDJYVZ4MXNVSCJO2A4B5D","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":"7d5ab19a7e52970e92e27b4ea0251729cb7ba561d353ff7fb13b0c01c387775c","cross_cats_sorted":["physics.class-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-06-20T18:43:56Z","title_canon_sha256":"5db98680fbd961d77189e13e0faab998af584ff9f664e615ff758a4a59d13b44"},"schema_version":"1.0","source":{"id":"1206.4577","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.4577","created_at":"2026-05-18T02:32:39Z"},{"alias_kind":"arxiv_version","alias_value":"1206.4577v2","created_at":"2026-05-18T02:32:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.4577","created_at":"2026-05-18T02:32:39Z"},{"alias_kind":"pith_short_12","alias_value":"CHLHKTDJYVZ4","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CHLHKTDJYVZ4MXNV","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CHLHKTDJ","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:eea13115db96871fd50a7fff15007694a8ae8b325d2cc15714a15167def9370e","target":"graph","created_at":"2026-05-18T02:32:39Z","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 theoretically demonstrate the concept of metadamping in dissipative metamaterials. We consider an infinite mass-spring chain with repeated local resonators and a statically equivalent periodic chain whose wave propagation characteristics are based on Bragg scattering. For each system we introduce identical viscous damping (dashpot) elements and compare the damping ratio associated with all Bloch modes. We find that the locally resonant metamaterial exhibits higher dissipation overall which indicates a damping emergence phenomena due to the presence of local resonance. We conclude our invest","authors_text":"Mahmoud I. Hussein, Michael J. Frazier","cross_cats":["physics.class-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-06-20T18:43:56Z","title":"Metadamping: An emergent phenomenon in dissipative metamaterials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.4577","kind":"arxiv","version":2},"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":"sha256:84209f03f9f9b590791922fc59854a7b82a798d0de535bfc238206ecf73e534e","target":"record","created_at":"2026-05-18T02:32:39Z","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":"7d5ab19a7e52970e92e27b4ea0251729cb7ba561d353ff7fb13b0c01c387775c","cross_cats_sorted":["physics.class-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-06-20T18:43:56Z","title_canon_sha256":"5db98680fbd961d77189e13e0faab998af584ff9f664e615ff758a4a59d13b44"},"schema_version":"1.0","source":{"id":"1206.4577","kind":"arxiv","version":2}},"canonical_sha256":"11d6754c69c573c65db59092ed0381e8daf04f25a01a2bef7e342a23d63645a1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11d6754c69c573c65db59092ed0381e8daf04f25a01a2bef7e342a23d63645a1","first_computed_at":"2026-05-18T02:32:39.268583Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:32:39.268583Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zYGFP9O7iztrR1H0oAgua6+MDjWQcwNcAaUce73eAiVMjTBsjhS3NRmW1pCO5QKd4WqBenDO2TF0TPz7xE/TAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:32:39.269024Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.4577","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:84209f03f9f9b590791922fc59854a7b82a798d0de535bfc238206ecf73e534e","sha256:eea13115db96871fd50a7fff15007694a8ae8b325d2cc15714a15167def9370e"],"state_sha256":"6d9c28f73a99f16abe20b78e8a824faf042cfdb046d1569e7c5b0a0d477e4b39"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ozPwJQOZ8xyfd0InstwVgxmGr34RYh3dWioX/O22eDdoVUzCwOyGjfGTWV/Eg84+Qj+KXM67vIFoHBIAmt+xBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T07:08:10.742220Z","bundle_sha256":"60694afd0f43a30a3262c278a563a14e30109283f29c906ba9a98848749a79f6"}}