{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:GDNRUITP6KOOICNSPHJUZKR7ED","short_pith_number":"pith:GDNRUITP","canonical_record":{"source":{"id":"2211.10463","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-11-18T19:03:18Z","cross_cats_sorted":[],"title_canon_sha256":"723fae622df7f1c402969822c4ac36bf8ecfd688558c08144466b4078b389bd0","abstract_canon_sha256":"eeab017908a9299332f235d77aaf9dad3c0ad9e59669f7538659c82db3dba2f8"},"schema_version":"1.0"},"canonical_sha256":"30db1a226ff29ce409b279d34caa3f20e4f4b74cf85495e8f91de4057f0808aa","source":{"kind":"arxiv","id":"2211.10463","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.10463","created_at":"2026-07-05T06:06:29Z"},{"alias_kind":"arxiv_version","alias_value":"2211.10463v2","created_at":"2026-07-05T06:06:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.10463","created_at":"2026-07-05T06:06:29Z"},{"alias_kind":"pith_short_12","alias_value":"GDNRUITP6KOO","created_at":"2026-07-05T06:06:29Z"},{"alias_kind":"pith_short_16","alias_value":"GDNRUITP6KOOICNS","created_at":"2026-07-05T06:06:29Z"},{"alias_kind":"pith_short_8","alias_value":"GDNRUITP","created_at":"2026-07-05T06:06:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:GDNRUITP6KOOICNSPHJUZKR7ED","target":"record","payload":{"canonical_record":{"source":{"id":"2211.10463","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-11-18T19:03:18Z","cross_cats_sorted":[],"title_canon_sha256":"723fae622df7f1c402969822c4ac36bf8ecfd688558c08144466b4078b389bd0","abstract_canon_sha256":"eeab017908a9299332f235d77aaf9dad3c0ad9e59669f7538659c82db3dba2f8"},"schema_version":"1.0"},"canonical_sha256":"30db1a226ff29ce409b279d34caa3f20e4f4b74cf85495e8f91de4057f0808aa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:06:29.211277Z","signature_b64":"+0XNOcvRy+xjNCGfrz5W61xMN1E3ZQ1MxvBymr9QjlkOYknYwrAisfZxWUv6ViQuFrAmC2ZHZ4MuC2eRCrruBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"30db1a226ff29ce409b279d34caa3f20e4f4b74cf85495e8f91de4057f0808aa","last_reissued_at":"2026-07-05T06:06:29.210863Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:06:29.210863Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2211.10463","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":"2026-07-05T06:06:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R2s+L1U1ex10ClgTL6665dkM5Z+kmaxhC0Fn0lSb3DJrkaHgS8yJl9kL0BWh6dY6yJyUALgYyD+mxt6ArlBhAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:04:01.144331Z"},"content_sha256":"60cd58ed6ffbd7464a28ee071c18ba65e822cf4854a6fc09e1ed8e6e373cd646","schema_version":"1.0","event_id":"sha256:60cd58ed6ffbd7464a28ee071c18ba65e822cf4854a6fc09e1ed8e6e373cd646"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:GDNRUITP6KOOICNSPHJUZKR7ED","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Perfect Match: RIS-enabled MIMO Channel Estimation Using Tensor Decomposition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Aydin Sezgin, Bilal Ahmad, Bilal Zafar, Kevin Weinberger, Martin Haardt","submitted_at":"2022-11-18T19:03:18Z","abstract_excerpt":"The deployment of reconfigurable intelligent surfaces (RISs) in a communication system provides control over the propagation environment, which facilitates the augmentation of a multitude of communication objectives. As these performance gains are highly dependent on the applied phase shifts at the RIS, accurate channel state information at the transceivers is imperative. However, not only do RISs traditionally lack signal processing capabilities, but their end-to-end channels also consist of multiple components. Hence, conventional channel estimation (CE) algorithms become incompatible with R"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.10463","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/2211.10463/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":"2026-07-05T06:06:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j77M69MOQ7UTvjF8pOBmJ/wQt/Kw3gwh27gWRLdJWuu7Y1YaZfyVmAgDnd6lqGp8D0Ac0Ohd5oR9TlDheHmmDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:04:01.144711Z"},"content_sha256":"9e9b1f5056215d43b94949a8026728f05339244c8b3b3f6ee57eeb7a6d3e91c4","schema_version":"1.0","event_id":"sha256:9e9b1f5056215d43b94949a8026728f05339244c8b3b3f6ee57eeb7a6d3e91c4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GDNRUITP6KOOICNSPHJUZKR7ED/bundle.json","state_url":"https://pith.science/pith/GDNRUITP6KOOICNSPHJUZKR7ED/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GDNRUITP6KOOICNSPHJUZKR7ED/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":"2026-07-07T10:04:01Z","links":{"resolver":"https://pith.science/pith/GDNRUITP6KOOICNSPHJUZKR7ED","bundle":"https://pith.science/pith/GDNRUITP6KOOICNSPHJUZKR7ED/bundle.json","state":"https://pith.science/pith/GDNRUITP6KOOICNSPHJUZKR7ED/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GDNRUITP6KOOICNSPHJUZKR7ED/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:GDNRUITP6KOOICNSPHJUZKR7ED","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":"eeab017908a9299332f235d77aaf9dad3c0ad9e59669f7538659c82db3dba2f8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-11-18T19:03:18Z","title_canon_sha256":"723fae622df7f1c402969822c4ac36bf8ecfd688558c08144466b4078b389bd0"},"schema_version":"1.0","source":{"id":"2211.10463","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.10463","created_at":"2026-07-05T06:06:29Z"},{"alias_kind":"arxiv_version","alias_value":"2211.10463v2","created_at":"2026-07-05T06:06:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.10463","created_at":"2026-07-05T06:06:29Z"},{"alias_kind":"pith_short_12","alias_value":"GDNRUITP6KOO","created_at":"2026-07-05T06:06:29Z"},{"alias_kind":"pith_short_16","alias_value":"GDNRUITP6KOOICNS","created_at":"2026-07-05T06:06:29Z"},{"alias_kind":"pith_short_8","alias_value":"GDNRUITP","created_at":"2026-07-05T06:06:29Z"}],"graph_snapshots":[{"event_id":"sha256:9e9b1f5056215d43b94949a8026728f05339244c8b3b3f6ee57eeb7a6d3e91c4","target":"graph","created_at":"2026-07-05T06:06:29Z","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/2211.10463/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The deployment of reconfigurable intelligent surfaces (RISs) in a communication system provides control over the propagation environment, which facilitates the augmentation of a multitude of communication objectives. As these performance gains are highly dependent on the applied phase shifts at the RIS, accurate channel state information at the transceivers is imperative. However, not only do RISs traditionally lack signal processing capabilities, but their end-to-end channels also consist of multiple components. Hence, conventional channel estimation (CE) algorithms become incompatible with R","authors_text":"Aydin Sezgin, Bilal Ahmad, Bilal Zafar, Kevin Weinberger, Martin Haardt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-11-18T19:03:18Z","title":"The Perfect Match: RIS-enabled MIMO Channel Estimation Using Tensor Decomposition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.10463","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":"sha256:60cd58ed6ffbd7464a28ee071c18ba65e822cf4854a6fc09e1ed8e6e373cd646","target":"record","created_at":"2026-07-05T06:06:29Z","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":"eeab017908a9299332f235d77aaf9dad3c0ad9e59669f7538659c82db3dba2f8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-11-18T19:03:18Z","title_canon_sha256":"723fae622df7f1c402969822c4ac36bf8ecfd688558c08144466b4078b389bd0"},"schema_version":"1.0","source":{"id":"2211.10463","kind":"arxiv","version":2}},"canonical_sha256":"30db1a226ff29ce409b279d34caa3f20e4f4b74cf85495e8f91de4057f0808aa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"30db1a226ff29ce409b279d34caa3f20e4f4b74cf85495e8f91de4057f0808aa","first_computed_at":"2026-07-05T06:06:29.210863Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:06:29.210863Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+0XNOcvRy+xjNCGfrz5W61xMN1E3ZQ1MxvBymr9QjlkOYknYwrAisfZxWUv6ViQuFrAmC2ZHZ4MuC2eRCrruBw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:06:29.211277Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.10463","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:60cd58ed6ffbd7464a28ee071c18ba65e822cf4854a6fc09e1ed8e6e373cd646","sha256:9e9b1f5056215d43b94949a8026728f05339244c8b3b3f6ee57eeb7a6d3e91c4"],"state_sha256":"80cfdaf1446797e8f2c86ed0e24972d66e0b540d61e91d890a780de61d2c817a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZOBIj0wngfqsBU+dz6QpG6BJGOzCrFETzhXor/xXqrkC34J3ueSfwWKbYt/Kq1hLy5FgmGdCQdvc/wTaYZghCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T10:04:01.146580Z","bundle_sha256":"6739c929504d1914ab273a998d45000d68cbe66ecf855b263930335218628140"}}