{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:BHKCTTSOYXVFUFXM37QR2JD6NG","short_pith_number":"pith:BHKCTTSO","canonical_record":{"source":{"id":"1407.5993","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-22T20:00:01Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"61e8f6313aba6b4290d5f4fb4d095c552c8759d9b666e2dd40343ca7281b4a5b","abstract_canon_sha256":"c7ed5d91362dc3651169e168cb69cbb147e5e47d3f711aa35a19efcd03ffef1e"},"schema_version":"1.0"},"canonical_sha256":"09d429ce4ec5ea5a16ecdfe11d247e69a2f8050f50ff3e11231fdf28d6563034","source":{"kind":"arxiv","id":"1407.5993","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.5993","created_at":"2026-05-18T01:42:32Z"},{"alias_kind":"arxiv_version","alias_value":"1407.5993v1","created_at":"2026-05-18T01:42:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.5993","created_at":"2026-05-18T01:42:32Z"},{"alias_kind":"pith_short_12","alias_value":"BHKCTTSOYXVF","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"BHKCTTSOYXVFUFXM","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"BHKCTTSO","created_at":"2026-05-18T12:28:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:BHKCTTSOYXVFUFXM37QR2JD6NG","target":"record","payload":{"canonical_record":{"source":{"id":"1407.5993","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-22T20:00:01Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"61e8f6313aba6b4290d5f4fb4d095c552c8759d9b666e2dd40343ca7281b4a5b","abstract_canon_sha256":"c7ed5d91362dc3651169e168cb69cbb147e5e47d3f711aa35a19efcd03ffef1e"},"schema_version":"1.0"},"canonical_sha256":"09d429ce4ec5ea5a16ecdfe11d247e69a2f8050f50ff3e11231fdf28d6563034","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:32.974143Z","signature_b64":"AVPXP2ft3kpjgxNqFMrpYdHVVUgircKf64oavyUa2sWz51XzS2QM+7lhbMXq3+fEEL1meGRzgZVIIVFUXonfDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"09d429ce4ec5ea5a16ecdfe11d247e69a2f8050f50ff3e11231fdf28d6563034","last_reissued_at":"2026-05-18T01:42:32.973630Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:32.973630Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.5993","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":"2026-05-18T01:42:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RnjDKNRwrWKBc0EAIiut+8K7jUQ7G9wztCEm6fTIf4PiiF31Y6YO9ODMzP4TCH6yb7P/zGTrh0ngpZ+SzOb0BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T09:08:21.231050Z"},"content_sha256":"5310b4bc314c89502c1afb71f368bddf3c3535c2fab3c2db1fd7e92b31b22c84","schema_version":"1.0","event_id":"sha256:5310b4bc314c89502c1afb71f368bddf3c3535c2fab3c2db1fd7e92b31b22c84"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:BHKCTTSOYXVFUFXM37QR2JD6NG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stellar intensity interferometry over kilometer baselines: Laboratory simulation of observations with the Cherenkov Telescope Array","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"Dainis Dravins, Tiphaine Lagadec","submitted_at":"2014-07-22T20:00:01Z","abstract_excerpt":"A long-held astronomical vision is to realize diffraction-limited optical aperture synthesis over kilometer baselines. This will enable imaging of stellar surfaces and their environments, show their evolution over time, and reveal interactions of stellar winds and gas flows in binary star systems. An opportunity is now opening up with the large telescope arrays primarily erected for measuring Cherenkov light in air induced by gamma rays. With suitable software, such telescopes could be electronically connected and used also for intensity interferometry. With no optical connection between the t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.5993","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":"2026-05-18T01:42:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wWJdrpd/tyahlCRN6wzGNZs2r8JwV4L7lk0t11zIL4CYgq9tOvU4Azp8JluOilUbCSwPE2fv2xAmCnrdR5BhBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T09:08:21.231700Z"},"content_sha256":"f09bf6bcc85f74598c22b9a9f43c3d5d8a1d5735feb9fc1fe28703c573e3c340","schema_version":"1.0","event_id":"sha256:f09bf6bcc85f74598c22b9a9f43c3d5d8a1d5735feb9fc1fe28703c573e3c340"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BHKCTTSOYXVFUFXM37QR2JD6NG/bundle.json","state_url":"https://pith.science/pith/BHKCTTSOYXVFUFXM37QR2JD6NG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BHKCTTSOYXVFUFXM37QR2JD6NG/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":"2026-06-05T09:08:21Z","links":{"resolver":"https://pith.science/pith/BHKCTTSOYXVFUFXM37QR2JD6NG","bundle":"https://pith.science/pith/BHKCTTSOYXVFUFXM37QR2JD6NG/bundle.json","state":"https://pith.science/pith/BHKCTTSOYXVFUFXM37QR2JD6NG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BHKCTTSOYXVFUFXM37QR2JD6NG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:BHKCTTSOYXVFUFXM37QR2JD6NG","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":"c7ed5d91362dc3651169e168cb69cbb147e5e47d3f711aa35a19efcd03ffef1e","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-22T20:00:01Z","title_canon_sha256":"61e8f6313aba6b4290d5f4fb4d095c552c8759d9b666e2dd40343ca7281b4a5b"},"schema_version":"1.0","source":{"id":"1407.5993","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.5993","created_at":"2026-05-18T01:42:32Z"},{"alias_kind":"arxiv_version","alias_value":"1407.5993v1","created_at":"2026-05-18T01:42:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.5993","created_at":"2026-05-18T01:42:32Z"},{"alias_kind":"pith_short_12","alias_value":"BHKCTTSOYXVF","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"BHKCTTSOYXVFUFXM","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"BHKCTTSO","created_at":"2026-05-18T12:28:22Z"}],"graph_snapshots":[{"event_id":"sha256:f09bf6bcc85f74598c22b9a9f43c3d5d8a1d5735feb9fc1fe28703c573e3c340","target":"graph","created_at":"2026-05-18T01:42:32Z","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":"A long-held astronomical vision is to realize diffraction-limited optical aperture synthesis over kilometer baselines. This will enable imaging of stellar surfaces and their environments, show their evolution over time, and reveal interactions of stellar winds and gas flows in binary star systems. An opportunity is now opening up with the large telescope arrays primarily erected for measuring Cherenkov light in air induced by gamma rays. With suitable software, such telescopes could be electronically connected and used also for intensity interferometry. With no optical connection between the t","authors_text":"Dainis Dravins, Tiphaine Lagadec","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-22T20:00:01Z","title":"Stellar intensity interferometry over kilometer baselines: Laboratory simulation of observations with the Cherenkov Telescope Array"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.5993","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":"sha256:5310b4bc314c89502c1afb71f368bddf3c3535c2fab3c2db1fd7e92b31b22c84","target":"record","created_at":"2026-05-18T01:42:32Z","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":"c7ed5d91362dc3651169e168cb69cbb147e5e47d3f711aa35a19efcd03ffef1e","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-22T20:00:01Z","title_canon_sha256":"61e8f6313aba6b4290d5f4fb4d095c552c8759d9b666e2dd40343ca7281b4a5b"},"schema_version":"1.0","source":{"id":"1407.5993","kind":"arxiv","version":1}},"canonical_sha256":"09d429ce4ec5ea5a16ecdfe11d247e69a2f8050f50ff3e11231fdf28d6563034","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"09d429ce4ec5ea5a16ecdfe11d247e69a2f8050f50ff3e11231fdf28d6563034","first_computed_at":"2026-05-18T01:42:32.973630Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:32.973630Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AVPXP2ft3kpjgxNqFMrpYdHVVUgircKf64oavyUa2sWz51XzS2QM+7lhbMXq3+fEEL1meGRzgZVIIVFUXonfDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:32.974143Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.5993","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5310b4bc314c89502c1afb71f368bddf3c3535c2fab3c2db1fd7e92b31b22c84","sha256:f09bf6bcc85f74598c22b9a9f43c3d5d8a1d5735feb9fc1fe28703c573e3c340"],"state_sha256":"a6c1dcc591083bd52d278ff62984b86b6e5c3c6495f4e04ce576d46d98ba1c9d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ry9A/mUC7J0Xwtj/Rkr7Ap/MiaX1K25c/O+9go5aob8+gBvbUfNomRYN8sIv8w1VVGMRp4r/apgA2VDhYHJsBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T09:08:21.234240Z","bundle_sha256":"f954c0595c4aebbe74be956d81ab0c5711aa268d8b08238a07cf5762d38c9c6c"}}