{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:VBKZQ5MJNUQAGE6PL6J5IG6WWU","short_pith_number":"pith:VBKZQ5MJ","canonical_record":{"source":{"id":"1606.02446","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-06-08T08:23:42Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"1ff06c3f96aecc764aa181a92cd46030fa6f08101cc64271317e7ac4ee85f84b","abstract_canon_sha256":"83e15bd579bf3b3e78583376cccbea5a1f19ea6d7c3ab31bfed638c8837055a9"},"schema_version":"1.0"},"canonical_sha256":"a8559875896d200313cf5f93d41bd6b527a01013816320173c524adb9a7e41fc","source":{"kind":"arxiv","id":"1606.02446","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.02446","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"arxiv_version","alias_value":"1606.02446v1","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.02446","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"pith_short_12","alias_value":"VBKZQ5MJNUQA","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"VBKZQ5MJNUQAGE6P","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"VBKZQ5MJ","created_at":"2026-05-18T12:30:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:VBKZQ5MJNUQAGE6PL6J5IG6WWU","target":"record","payload":{"canonical_record":{"source":{"id":"1606.02446","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-06-08T08:23:42Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"1ff06c3f96aecc764aa181a92cd46030fa6f08101cc64271317e7ac4ee85f84b","abstract_canon_sha256":"83e15bd579bf3b3e78583376cccbea5a1f19ea6d7c3ab31bfed638c8837055a9"},"schema_version":"1.0"},"canonical_sha256":"a8559875896d200313cf5f93d41bd6b527a01013816320173c524adb9a7e41fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:16.690325Z","signature_b64":"eLw2zgcsYTNKypzC1kGWm6MM4UEKCQ8dGFeQHQ6UW7cnfsSAJfSjZ9RliFE5EAWpQ+wFamjLSK9FAxhqXERDAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a8559875896d200313cf5f93d41bd6b527a01013816320173c524adb9a7e41fc","last_reissued_at":"2026-05-18T01:08:16.689689Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:16.689689Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.02446","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":"2026-05-18T01:08:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BIInH3aF2xSJ4xVKumwWLm4fTNYYKj12w7STbk2c0fvzj4YkiOrTb1Q/JiDJY1zP4kziEZKd2VDJCHm46sGmDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:53:46.576141Z"},"content_sha256":"7bf5847b9cc0fd30f9194d084b9a8e8617d107293f7fff08cbcb34e898233ccb","schema_version":"1.0","event_id":"sha256:7bf5847b9cc0fd30f9194d084b9a8e8617d107293f7fff08cbcb34e898233ccb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:VBKZQ5MJNUQAGE6PL6J5IG6WWU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"One-Port Direct/Reverse Method for Characterizing VNA Calibration Standards","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"astro-ph.IM","authors_text":"Alan E.E. Rogers, Judd D. Bowman, Raul A. Monsalve, Thomas J. Mozdzen","submitted_at":"2016-06-08T08:23:42Z","abstract_excerpt":"This paper introduces a one-port method for estimating model parameters of VNA calibration standards. The method involves measuring the standards through an asymmetrical passive network connected in direct mode and then in reverse mode, and using these measurements to compute the S-parameters of the network. The free parameters of the calibration standards are estimated by minimizing a figure of merit based on the expected equality of the S-parameters of the network when used in direct and reverse modes. The capabilities of the method are demonstrated through simulations, and real measurements"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.02446","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":"2026-05-18T01:08:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"faUluHqfVz2CGb1TFJsITb0ld/41oRrVxu0Pa7O7lDpls3yk/kjttiqAo1IDvnqLq/NQNXVgDA6CRFP1ddg0Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:53:46.576492Z"},"content_sha256":"c37c2094a09ae0fba6e7cd6589cad85019b75c621b5a1f4fb21fe8eb1ce4674a","schema_version":"1.0","event_id":"sha256:c37c2094a09ae0fba6e7cd6589cad85019b75c621b5a1f4fb21fe8eb1ce4674a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VBKZQ5MJNUQAGE6PL6J5IG6WWU/bundle.json","state_url":"https://pith.science/pith/VBKZQ5MJNUQAGE6PL6J5IG6WWU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VBKZQ5MJNUQAGE6PL6J5IG6WWU/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":"2026-06-02T16:53:46Z","links":{"resolver":"https://pith.science/pith/VBKZQ5MJNUQAGE6PL6J5IG6WWU","bundle":"https://pith.science/pith/VBKZQ5MJNUQAGE6PL6J5IG6WWU/bundle.json","state":"https://pith.science/pith/VBKZQ5MJNUQAGE6PL6J5IG6WWU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VBKZQ5MJNUQAGE6PL6J5IG6WWU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:VBKZQ5MJNUQAGE6PL6J5IG6WWU","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":"83e15bd579bf3b3e78583376cccbea5a1f19ea6d7c3ab31bfed638c8837055a9","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-06-08T08:23:42Z","title_canon_sha256":"1ff06c3f96aecc764aa181a92cd46030fa6f08101cc64271317e7ac4ee85f84b"},"schema_version":"1.0","source":{"id":"1606.02446","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.02446","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"arxiv_version","alias_value":"1606.02446v1","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.02446","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"pith_short_12","alias_value":"VBKZQ5MJNUQA","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"VBKZQ5MJNUQAGE6P","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"VBKZQ5MJ","created_at":"2026-05-18T12:30:48Z"}],"graph_snapshots":[{"event_id":"sha256:c37c2094a09ae0fba6e7cd6589cad85019b75c621b5a1f4fb21fe8eb1ce4674a","target":"graph","created_at":"2026-05-18T01:08:16Z","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":"This paper introduces a one-port method for estimating model parameters of VNA calibration standards. The method involves measuring the standards through an asymmetrical passive network connected in direct mode and then in reverse mode, and using these measurements to compute the S-parameters of the network. The free parameters of the calibration standards are estimated by minimizing a figure of merit based on the expected equality of the S-parameters of the network when used in direct and reverse modes. The capabilities of the method are demonstrated through simulations, and real measurements","authors_text":"Alan E.E. Rogers, Judd D. Bowman, Raul A. Monsalve, Thomas J. Mozdzen","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-06-08T08:23:42Z","title":"One-Port Direct/Reverse Method for Characterizing VNA Calibration Standards"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.02446","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":"sha256:7bf5847b9cc0fd30f9194d084b9a8e8617d107293f7fff08cbcb34e898233ccb","target":"record","created_at":"2026-05-18T01:08:16Z","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":"83e15bd579bf3b3e78583376cccbea5a1f19ea6d7c3ab31bfed638c8837055a9","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-06-08T08:23:42Z","title_canon_sha256":"1ff06c3f96aecc764aa181a92cd46030fa6f08101cc64271317e7ac4ee85f84b"},"schema_version":"1.0","source":{"id":"1606.02446","kind":"arxiv","version":1}},"canonical_sha256":"a8559875896d200313cf5f93d41bd6b527a01013816320173c524adb9a7e41fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a8559875896d200313cf5f93d41bd6b527a01013816320173c524adb9a7e41fc","first_computed_at":"2026-05-18T01:08:16.689689Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:16.689689Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eLw2zgcsYTNKypzC1kGWm6MM4UEKCQ8dGFeQHQ6UW7cnfsSAJfSjZ9RliFE5EAWpQ+wFamjLSK9FAxhqXERDAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:16.690325Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.02446","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7bf5847b9cc0fd30f9194d084b9a8e8617d107293f7fff08cbcb34e898233ccb","sha256:c37c2094a09ae0fba6e7cd6589cad85019b75c621b5a1f4fb21fe8eb1ce4674a"],"state_sha256":"e9bc84f962e89da85599ed7c3502cf4e70a346fb8581a0872166f9e598f0ae07"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZW2hcNNXPLeWophrMLHerUUTsH6M5taay5OcqtucQwAvTZitnr4mcUqbF3QMPemv/0v7HTe2VQbKjxialHL9Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T16:53:46.578439Z","bundle_sha256":"98ac727bb87044f24f903fcdbb21ddc70992e8d25c110ecfbac5af16aa50c7ad"}}