{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:7X2SAUPPH2PXCYI64FZXTS6X67","short_pith_number":"pith:7X2SAUPP","canonical_record":{"source":{"id":"1401.4916","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-01-20T14:31:02Z","cross_cats_sorted":[],"title_canon_sha256":"54264f44a566d4f12ac9e14806f2ab830fbb64e42a89ac24e2c8f5da781abe17","abstract_canon_sha256":"a3d3b3fd9d9ab978547f2f08e3363161f7fd503bf1aec881b48a3e895de0c3e9"},"schema_version":"1.0"},"canonical_sha256":"fdf52051ef3e9f71611ee17379cbd7f7fe04bdf85a41a8b2bd33201d84cdb2a1","source":{"kind":"arxiv","id":"1401.4916","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.4916","created_at":"2026-05-18T01:45:18Z"},{"alias_kind":"arxiv_version","alias_value":"1401.4916v1","created_at":"2026-05-18T01:45:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.4916","created_at":"2026-05-18T01:45:18Z"},{"alias_kind":"pith_short_12","alias_value":"7X2SAUPPH2PX","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7X2SAUPPH2PXCYI6","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7X2SAUPP","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:7X2SAUPPH2PXCYI64FZXTS6X67","target":"record","payload":{"canonical_record":{"source":{"id":"1401.4916","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-01-20T14:31:02Z","cross_cats_sorted":[],"title_canon_sha256":"54264f44a566d4f12ac9e14806f2ab830fbb64e42a89ac24e2c8f5da781abe17","abstract_canon_sha256":"a3d3b3fd9d9ab978547f2f08e3363161f7fd503bf1aec881b48a3e895de0c3e9"},"schema_version":"1.0"},"canonical_sha256":"fdf52051ef3e9f71611ee17379cbd7f7fe04bdf85a41a8b2bd33201d84cdb2a1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:18.989265Z","signature_b64":"pA9b+OmkZCGgR4iGpUrnR/xcXU9P/hm59f5tcEu+9CwmipQMW78TV5kmwYAtu73MEqraHdlxpbWYsGoByfDPDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fdf52051ef3e9f71611ee17379cbd7f7fe04bdf85a41a8b2bd33201d84cdb2a1","last_reissued_at":"2026-05-18T01:45:18.988579Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:18.988579Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.4916","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":"2026-05-18T01:45:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"25bKsU5gEwrV/XyLPGufKCKjQwUX38i/FDI1VdVOorvw9MqrXfqHb037cDK54/ixzVObGmFXqN8nknxe2AmlDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T03:35:15.104238Z"},"content_sha256":"33be6379ae68c1b0ad4ee1791eccbeb00051cf6c86bc21c63f2499e1df848062","schema_version":"1.0","event_id":"sha256:33be6379ae68c1b0ad4ee1791eccbeb00051cf6c86bc21c63f2499e1df848062"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:7X2SAUPPH2PXCYI64FZXTS6X67","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical Absorption Measurement at 1550 nm on a Highly-Reflective Si/SiO$_2$ Coating Stack","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Alexander Khalaidovski, Jessica Steinlechner, Roman Schnabel","submitted_at":"2014-01-20T14:31:02Z","abstract_excerpt":"Future laser-interferometric gravitational wave detectors (GWDs) will potentially employ test mass mirrors from crystalline silicon and a laser wavelength of $1550\\,\\rm{nm}$, which corresponds to a photon energy below the silicon bandgap. Silicon might also be an attractive high-refractive index material for the dielectric mirror coatings. Films of amorphous silicon (a-Si), however, have been found to be significantly more absorptive at $1550\\,\\rm{nm}$ than crystalline silicon (c-Si). Here, we investigate the optical absorption of a Si/SiO$_2$ dielectric coating produced with the ion plating t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.4916","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":"2026-05-18T01:45:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oaJnYAqalyz+wN0bAFDTofpG+bu90o3lU9YJqOnKje2szqrnhfOnHAKPN0/6621FR8nthroLNse6CRl/KMBQBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T03:35:15.104601Z"},"content_sha256":"d23ad933bee28fc658ba0da427936cba8ec90e828cb255cc9e2d63aa50e16602","schema_version":"1.0","event_id":"sha256:d23ad933bee28fc658ba0da427936cba8ec90e828cb255cc9e2d63aa50e16602"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7X2SAUPPH2PXCYI64FZXTS6X67/bundle.json","state_url":"https://pith.science/pith/7X2SAUPPH2PXCYI64FZXTS6X67/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7X2SAUPPH2PXCYI64FZXTS6X67/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":"2026-06-03T03:35:15Z","links":{"resolver":"https://pith.science/pith/7X2SAUPPH2PXCYI64FZXTS6X67","bundle":"https://pith.science/pith/7X2SAUPPH2PXCYI64FZXTS6X67/bundle.json","state":"https://pith.science/pith/7X2SAUPPH2PXCYI64FZXTS6X67/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7X2SAUPPH2PXCYI64FZXTS6X67/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:7X2SAUPPH2PXCYI64FZXTS6X67","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":"a3d3b3fd9d9ab978547f2f08e3363161f7fd503bf1aec881b48a3e895de0c3e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-01-20T14:31:02Z","title_canon_sha256":"54264f44a566d4f12ac9e14806f2ab830fbb64e42a89ac24e2c8f5da781abe17"},"schema_version":"1.0","source":{"id":"1401.4916","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.4916","created_at":"2026-05-18T01:45:18Z"},{"alias_kind":"arxiv_version","alias_value":"1401.4916v1","created_at":"2026-05-18T01:45:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.4916","created_at":"2026-05-18T01:45:18Z"},{"alias_kind":"pith_short_12","alias_value":"7X2SAUPPH2PX","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7X2SAUPPH2PXCYI6","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7X2SAUPP","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:d23ad933bee28fc658ba0da427936cba8ec90e828cb255cc9e2d63aa50e16602","target":"graph","created_at":"2026-05-18T01:45:18Z","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":"Future laser-interferometric gravitational wave detectors (GWDs) will potentially employ test mass mirrors from crystalline silicon and a laser wavelength of $1550\\,\\rm{nm}$, which corresponds to a photon energy below the silicon bandgap. Silicon might also be an attractive high-refractive index material for the dielectric mirror coatings. Films of amorphous silicon (a-Si), however, have been found to be significantly more absorptive at $1550\\,\\rm{nm}$ than crystalline silicon (c-Si). Here, we investigate the optical absorption of a Si/SiO$_2$ dielectric coating produced with the ion plating t","authors_text":"Alexander Khalaidovski, Jessica Steinlechner, Roman Schnabel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-01-20T14:31:02Z","title":"Optical Absorption Measurement at 1550 nm on a Highly-Reflective Si/SiO$_2$ Coating Stack"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.4916","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":"sha256:33be6379ae68c1b0ad4ee1791eccbeb00051cf6c86bc21c63f2499e1df848062","target":"record","created_at":"2026-05-18T01:45:18Z","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":"a3d3b3fd9d9ab978547f2f08e3363161f7fd503bf1aec881b48a3e895de0c3e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-01-20T14:31:02Z","title_canon_sha256":"54264f44a566d4f12ac9e14806f2ab830fbb64e42a89ac24e2c8f5da781abe17"},"schema_version":"1.0","source":{"id":"1401.4916","kind":"arxiv","version":1}},"canonical_sha256":"fdf52051ef3e9f71611ee17379cbd7f7fe04bdf85a41a8b2bd33201d84cdb2a1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fdf52051ef3e9f71611ee17379cbd7f7fe04bdf85a41a8b2bd33201d84cdb2a1","first_computed_at":"2026-05-18T01:45:18.988579Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:18.988579Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pA9b+OmkZCGgR4iGpUrnR/xcXU9P/hm59f5tcEu+9CwmipQMW78TV5kmwYAtu73MEqraHdlxpbWYsGoByfDPDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:18.989265Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.4916","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:33be6379ae68c1b0ad4ee1791eccbeb00051cf6c86bc21c63f2499e1df848062","sha256:d23ad933bee28fc658ba0da427936cba8ec90e828cb255cc9e2d63aa50e16602"],"state_sha256":"b20a3ccf18b3631ecd69a13a42cce3cf06e7d39350cba9f9746f5309215f87ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BQ5WxlYi/bypVj/dDdeDWMy91NNUxc79ymEJryeJeJa5iI/r8kH+PwN2ekPXva3wiJHzYX4vql9HJ13Ips63CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T03:35:15.106529Z","bundle_sha256":"3df839f727f15298f4ba62a12d14e70edba416cb2988fd7a4e081538cbf6662f"}}