{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:NHEANWGZQO32G37LFYX4SA67N2","short_pith_number":"pith:NHEANWGZ","canonical_record":{"source":{"id":"2507.07866","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2025-07-10T15:46:52Z","cross_cats_sorted":[],"title_canon_sha256":"e53eb5d720b6cc41c8142c14f3d761a6d5a22a6b560e151cbf0aef2437d520ab","abstract_canon_sha256":"eb93bf1c9516019a2ef8731eca79c2168029f852c60b2236a61c98dae48b3cf6"},"schema_version":"1.0"},"canonical_sha256":"69c806d8d983b7a36feb2e2fc903df6e8871a534aec6aeaca3db234160eeac9d","source":{"kind":"arxiv","id":"2507.07866","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.07866","created_at":"2026-07-05T11:35:06Z"},{"alias_kind":"arxiv_version","alias_value":"2507.07866v1","created_at":"2026-07-05T11:35:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.07866","created_at":"2026-07-05T11:35:06Z"},{"alias_kind":"pith_short_12","alias_value":"NHEANWGZQO32","created_at":"2026-07-05T11:35:06Z"},{"alias_kind":"pith_short_16","alias_value":"NHEANWGZQO32G37L","created_at":"2026-07-05T11:35:06Z"},{"alias_kind":"pith_short_8","alias_value":"NHEANWGZ","created_at":"2026-07-05T11:35:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:NHEANWGZQO32G37LFYX4SA67N2","target":"record","payload":{"canonical_record":{"source":{"id":"2507.07866","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2025-07-10T15:46:52Z","cross_cats_sorted":[],"title_canon_sha256":"e53eb5d720b6cc41c8142c14f3d761a6d5a22a6b560e151cbf0aef2437d520ab","abstract_canon_sha256":"eb93bf1c9516019a2ef8731eca79c2168029f852c60b2236a61c98dae48b3cf6"},"schema_version":"1.0"},"canonical_sha256":"69c806d8d983b7a36feb2e2fc903df6e8871a534aec6aeaca3db234160eeac9d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:35:06.382784Z","signature_b64":"g+ZdQO9saPt1WFfhF/lZZ4iv7Z3+F2P3SdD8Rdyr/aRaT5TWNYyYEpqa5xjrb26D4Ax/a+Z9waV6dc4dRboQBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"69c806d8d983b7a36feb2e2fc903df6e8871a534aec6aeaca3db234160eeac9d","last_reissued_at":"2026-07-05T11:35:06.382360Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:35:06.382360Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.07866","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":"2026-07-05T11:35:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s7MX0xo33p0WP2iV9XGsdAf2gmYQFrq5kZHSGyXV/pCCVPP3IzLCnteJeYdbNYkubEnQCC9Ri1V0QVtMZiicAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T22:18:42.287320Z"},"content_sha256":"c7e1e7a4e30ece70fc153eaca2fee9d79e185d863faa700ea3cd6589037d8bba","schema_version":"1.0","event_id":"sha256:c7e1e7a4e30ece70fc153eaca2fee9d79e185d863faa700ea3cd6589037d8bba"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:NHEANWGZQO32G37LFYX4SA67N2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Temperature Dependent Optical Response Of High- Tc Yba2cu3o7-{\\delta} (Ybco) Thin Films","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Ali R. Koymen, Benjamin J. P. Jones, Iakovos Tzoka, Jonathan Asaadi, Nader Hozhabri, Pratyanik Sau, V. A. Chirayath, Vivek Khichar","submitted_at":"2025-07-10T15:46:52Z","abstract_excerpt":"We report on the temperature-dependent optical response of thin films of YBa2Cu3O7-{\\delta} (YBCO) in the visible spectral range under cryogenic conditions. Specifically, we observe an increase in transmittance near the superconducting transition temperature (Tc), which saturates within a few kelvins below Tc. The increase in transmittance is accompanied by a corresponding decrease in reflectance as the temperature drops below Tc, and both quantities track the superconducting phase transition. Changes in transmittance are found to be wavelength dependent, with the maximum variation occurring a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.07866","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/2507.07866/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":"2026-07-05T11:35:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZoXvmclynT3IUONfjKwevha/myi2A5YXEQCeayDaL/aiaT/egbore9kK4tUMStVSJLpj0TTckWrZuk5Bkv9fCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T22:18:42.287861Z"},"content_sha256":"7617dfcc72bb9e7553389c4f5d4ea6e234feaa390cdfa5dce93801639b9b2442","schema_version":"1.0","event_id":"sha256:7617dfcc72bb9e7553389c4f5d4ea6e234feaa390cdfa5dce93801639b9b2442"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NHEANWGZQO32G37LFYX4SA67N2/bundle.json","state_url":"https://pith.science/pith/NHEANWGZQO32G37LFYX4SA67N2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NHEANWGZQO32G37LFYX4SA67N2/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":"2026-08-18T22:18:42Z","links":{"resolver":"https://pith.science/pith/NHEANWGZQO32G37LFYX4SA67N2","bundle":"https://pith.science/pith/NHEANWGZQO32G37LFYX4SA67N2/bundle.json","state":"https://pith.science/pith/NHEANWGZQO32G37LFYX4SA67N2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NHEANWGZQO32G37LFYX4SA67N2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:NHEANWGZQO32G37LFYX4SA67N2","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":"eb93bf1c9516019a2ef8731eca79c2168029f852c60b2236a61c98dae48b3cf6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2025-07-10T15:46:52Z","title_canon_sha256":"e53eb5d720b6cc41c8142c14f3d761a6d5a22a6b560e151cbf0aef2437d520ab"},"schema_version":"1.0","source":{"id":"2507.07866","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.07866","created_at":"2026-07-05T11:35:06Z"},{"alias_kind":"arxiv_version","alias_value":"2507.07866v1","created_at":"2026-07-05T11:35:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.07866","created_at":"2026-07-05T11:35:06Z"},{"alias_kind":"pith_short_12","alias_value":"NHEANWGZQO32","created_at":"2026-07-05T11:35:06Z"},{"alias_kind":"pith_short_16","alias_value":"NHEANWGZQO32G37L","created_at":"2026-07-05T11:35:06Z"},{"alias_kind":"pith_short_8","alias_value":"NHEANWGZ","created_at":"2026-07-05T11:35:06Z"}],"graph_snapshots":[{"event_id":"sha256:7617dfcc72bb9e7553389c4f5d4ea6e234feaa390cdfa5dce93801639b9b2442","target":"graph","created_at":"2026-07-05T11:35:06Z","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/2507.07866/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on the temperature-dependent optical response of thin films of YBa2Cu3O7-{\\delta} (YBCO) in the visible spectral range under cryogenic conditions. Specifically, we observe an increase in transmittance near the superconducting transition temperature (Tc), which saturates within a few kelvins below Tc. The increase in transmittance is accompanied by a corresponding decrease in reflectance as the temperature drops below Tc, and both quantities track the superconducting phase transition. Changes in transmittance are found to be wavelength dependent, with the maximum variation occurring a","authors_text":"Ali R. Koymen, Benjamin J. P. Jones, Iakovos Tzoka, Jonathan Asaadi, Nader Hozhabri, Pratyanik Sau, V. A. Chirayath, Vivek Khichar","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2025-07-10T15:46:52Z","title":"Temperature Dependent Optical Response Of High- Tc Yba2cu3o7-{\\delta} (Ybco) Thin Films"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.07866","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:c7e1e7a4e30ece70fc153eaca2fee9d79e185d863faa700ea3cd6589037d8bba","target":"record","created_at":"2026-07-05T11:35:06Z","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":"eb93bf1c9516019a2ef8731eca79c2168029f852c60b2236a61c98dae48b3cf6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2025-07-10T15:46:52Z","title_canon_sha256":"e53eb5d720b6cc41c8142c14f3d761a6d5a22a6b560e151cbf0aef2437d520ab"},"schema_version":"1.0","source":{"id":"2507.07866","kind":"arxiv","version":1}},"canonical_sha256":"69c806d8d983b7a36feb2e2fc903df6e8871a534aec6aeaca3db234160eeac9d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69c806d8d983b7a36feb2e2fc903df6e8871a534aec6aeaca3db234160eeac9d","first_computed_at":"2026-07-05T11:35:06.382360Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:35:06.382360Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"g+ZdQO9saPt1WFfhF/lZZ4iv7Z3+F2P3SdD8Rdyr/aRaT5TWNYyYEpqa5xjrb26D4Ax/a+Z9waV6dc4dRboQBw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:35:06.382784Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.07866","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c7e1e7a4e30ece70fc153eaca2fee9d79e185d863faa700ea3cd6589037d8bba","sha256:7617dfcc72bb9e7553389c4f5d4ea6e234feaa390cdfa5dce93801639b9b2442"],"state_sha256":"4991dca591a077401ef4a925cff2624868d57b6bf4ca324feb4b593d31bcac9c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sJ9Ie7O4uCC/SRCOcAt/LW2rXPxtc/zrJEAt+hCa8vGjCT9ucD/vGWNTn71n/HuBelKUFyGmdEEFewgc8JNcDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T22:18:42.292062Z","bundle_sha256":"b99fbddf610ae63208b5a1098914a58e01aba3d135bc6573af5277e1f4dcfad3"}}