{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:HHMK6L5YBO75UR3OH7B55VPIWP","short_pith_number":"pith:HHMK6L5Y","canonical_record":{"source":{"id":"2210.09788","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2022-10-18T12:04:50Z","cross_cats_sorted":[],"title_canon_sha256":"7642139a503e2b0c04a40102638e4a6a19244cf7c722ec433c44f853b99dbd64","abstract_canon_sha256":"72b3db172006a1de4af5e7d96acdd643aabc14a398bd621935b5b0ff1b309d5e"},"schema_version":"1.0"},"canonical_sha256":"39d8af2fb80bbfda476e3fc3ded5e8b3d6ed7b78718e1bbddf70c6c1c77a7bd2","source":{"kind":"arxiv","id":"2210.09788","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.09788","created_at":"2026-07-05T05:15:00Z"},{"alias_kind":"arxiv_version","alias_value":"2210.09788v2","created_at":"2026-07-05T05:15:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.09788","created_at":"2026-07-05T05:15:00Z"},{"alias_kind":"pith_short_12","alias_value":"HHMK6L5YBO75","created_at":"2026-07-05T05:15:00Z"},{"alias_kind":"pith_short_16","alias_value":"HHMK6L5YBO75UR3O","created_at":"2026-07-05T05:15:00Z"},{"alias_kind":"pith_short_8","alias_value":"HHMK6L5Y","created_at":"2026-07-05T05:15:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:HHMK6L5YBO75UR3OH7B55VPIWP","target":"record","payload":{"canonical_record":{"source":{"id":"2210.09788","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2022-10-18T12:04:50Z","cross_cats_sorted":[],"title_canon_sha256":"7642139a503e2b0c04a40102638e4a6a19244cf7c722ec433c44f853b99dbd64","abstract_canon_sha256":"72b3db172006a1de4af5e7d96acdd643aabc14a398bd621935b5b0ff1b309d5e"},"schema_version":"1.0"},"canonical_sha256":"39d8af2fb80bbfda476e3fc3ded5e8b3d6ed7b78718e1bbddf70c6c1c77a7bd2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:15:00.381619Z","signature_b64":"XBBWSJ+UIr5t6Vhj4o7YwWsMfqbJ3C0nglhINoMZWbmyGJPPTlk7P5k6gI0H6Qmqq7l85qDowLAUnYTdMySCBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"39d8af2fb80bbfda476e3fc3ded5e8b3d6ed7b78718e1bbddf70c6c1c77a7bd2","last_reissued_at":"2026-07-05T05:15:00.381146Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:15:00.381146Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2210.09788","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":"2026-07-05T05:15:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r21sg27O9RcVWKaD870F1gSXR8Dz4kRspMCfPp0uKAP5WZwcizrWa61bWd4a4bSk5MxXNkFJr10xXgwPHjHCAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T18:37:54.737044Z"},"content_sha256":"6cda4937b6bfdc45de26c15293d934c8402f99ff32809bac059190953c679d15","schema_version":"1.0","event_id":"sha256:6cda4937b6bfdc45de26c15293d934c8402f99ff32809bac059190953c679d15"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:HHMK6L5YBO75UR3OH7B55VPIWP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Metasurface-Inspired Maintenance-Free IoT Tags Characterised in Both Frequency and Time Domains","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"Akira Uchiyama, Ashif Aminulloh Fathnan, Hiroki Wakatsuchi, Masaya Tashiro, Yuta Sugiura","submitted_at":"2022-10-18T12:04:50Z","abstract_excerpt":"We present metasurface-inspired maintenance-free IoT tags that can be characterised not only by frequency-domain profiles but also by time-domain profiles. In particular, time-domain characterisation is made possible by implementing the waveform-selective mechanisms of recently developed circuit-based metasurfaces that behave differently, even at the same frequency, in accordance with the pulse duration of the incident wave. Our designs are numerically and experimentally validated and potentially contribute to accommodating an increasing number of IoT tags within a single wireless network whil"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.09788","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2210.09788/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":"2026-07-05T05:15:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eOrm4BEflSD5JaYvjBooCsMrCfrI+k62abouP+5dqdutF08lY+0s1i34OZRPEuY4oPsUpwcxJMjxLzBcrQsdAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T18:37:54.737632Z"},"content_sha256":"c74bc7a6de3bdeb8dbae68da6b2cc8a8f2781a4ca2e0d22e8e3baffe3cc05511","schema_version":"1.0","event_id":"sha256:c74bc7a6de3bdeb8dbae68da6b2cc8a8f2781a4ca2e0d22e8e3baffe3cc05511"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HHMK6L5YBO75UR3OH7B55VPIWP/bundle.json","state_url":"https://pith.science/pith/HHMK6L5YBO75UR3OH7B55VPIWP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HHMK6L5YBO75UR3OH7B55VPIWP/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":"2026-08-19T18:37:54Z","links":{"resolver":"https://pith.science/pith/HHMK6L5YBO75UR3OH7B55VPIWP","bundle":"https://pith.science/pith/HHMK6L5YBO75UR3OH7B55VPIWP/bundle.json","state":"https://pith.science/pith/HHMK6L5YBO75UR3OH7B55VPIWP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HHMK6L5YBO75UR3OH7B55VPIWP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:HHMK6L5YBO75UR3OH7B55VPIWP","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":"72b3db172006a1de4af5e7d96acdd643aabc14a398bd621935b5b0ff1b309d5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2022-10-18T12:04:50Z","title_canon_sha256":"7642139a503e2b0c04a40102638e4a6a19244cf7c722ec433c44f853b99dbd64"},"schema_version":"1.0","source":{"id":"2210.09788","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.09788","created_at":"2026-07-05T05:15:00Z"},{"alias_kind":"arxiv_version","alias_value":"2210.09788v2","created_at":"2026-07-05T05:15:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.09788","created_at":"2026-07-05T05:15:00Z"},{"alias_kind":"pith_short_12","alias_value":"HHMK6L5YBO75","created_at":"2026-07-05T05:15:00Z"},{"alias_kind":"pith_short_16","alias_value":"HHMK6L5YBO75UR3O","created_at":"2026-07-05T05:15:00Z"},{"alias_kind":"pith_short_8","alias_value":"HHMK6L5Y","created_at":"2026-07-05T05:15:00Z"}],"graph_snapshots":[{"event_id":"sha256:c74bc7a6de3bdeb8dbae68da6b2cc8a8f2781a4ca2e0d22e8e3baffe3cc05511","target":"graph","created_at":"2026-07-05T05:15:00Z","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/2210.09788/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present metasurface-inspired maintenance-free IoT tags that can be characterised not only by frequency-domain profiles but also by time-domain profiles. In particular, time-domain characterisation is made possible by implementing the waveform-selective mechanisms of recently developed circuit-based metasurfaces that behave differently, even at the same frequency, in accordance with the pulse duration of the incident wave. Our designs are numerically and experimentally validated and potentially contribute to accommodating an increasing number of IoT tags within a single wireless network whil","authors_text":"Akira Uchiyama, Ashif Aminulloh Fathnan, Hiroki Wakatsuchi, Masaya Tashiro, Yuta Sugiura","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2022-10-18T12:04:50Z","title":"Metasurface-Inspired Maintenance-Free IoT Tags Characterised in Both Frequency and Time Domains"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.09788","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":"sha256:6cda4937b6bfdc45de26c15293d934c8402f99ff32809bac059190953c679d15","target":"record","created_at":"2026-07-05T05:15:00Z","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":"72b3db172006a1de4af5e7d96acdd643aabc14a398bd621935b5b0ff1b309d5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2022-10-18T12:04:50Z","title_canon_sha256":"7642139a503e2b0c04a40102638e4a6a19244cf7c722ec433c44f853b99dbd64"},"schema_version":"1.0","source":{"id":"2210.09788","kind":"arxiv","version":2}},"canonical_sha256":"39d8af2fb80bbfda476e3fc3ded5e8b3d6ed7b78718e1bbddf70c6c1c77a7bd2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"39d8af2fb80bbfda476e3fc3ded5e8b3d6ed7b78718e1bbddf70c6c1c77a7bd2","first_computed_at":"2026-07-05T05:15:00.381146Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:15:00.381146Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XBBWSJ+UIr5t6Vhj4o7YwWsMfqbJ3C0nglhINoMZWbmyGJPPTlk7P5k6gI0H6Qmqq7l85qDowLAUnYTdMySCBg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:15:00.381619Z","signed_message":"canonical_sha256_bytes"},"source_id":"2210.09788","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6cda4937b6bfdc45de26c15293d934c8402f99ff32809bac059190953c679d15","sha256:c74bc7a6de3bdeb8dbae68da6b2cc8a8f2781a4ca2e0d22e8e3baffe3cc05511"],"state_sha256":"3d7a397bf74cde343c0ead017ea38a3851b47c241b53d27c040d4b77a6ac0308"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QvhCb5cMKm3G9Hf4qj3xdii20x6anGEz8xpxP03aps1rpEO9SdiEO5ELXX3bFgXQFaSjGAfxhqDQ491GP3zWAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T18:37:54.741170Z","bundle_sha256":"24e6d831d450b3ad4ed90504e74925cca6d4a3c72c7fc440d73842c0b909b868"}}