{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:T4APXPIGUJFRIGFURWCVKXGM6F","short_pith_number":"pith:T4APXPIG","canonical_record":{"source":{"id":"1801.00169","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-12-30T18:03:29Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"0409511f4ed8a1b203a688d96248d5ab51c48e55c1bcbddf8d2c6223c6ad2bc8","abstract_canon_sha256":"b6ef89b309cb937c9d77175926102f0b6e3409c81c0c797855ba231bd13a628a"},"schema_version":"1.0"},"canonical_sha256":"9f00fbbd06a24b1418b48d85555cccf175c1e95b34f8db649e6496987d467735","source":{"kind":"arxiv","id":"1801.00169","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.00169","created_at":"2026-05-18T00:08:10Z"},{"alias_kind":"arxiv_version","alias_value":"1801.00169v2","created_at":"2026-05-18T00:08:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.00169","created_at":"2026-05-18T00:08:10Z"},{"alias_kind":"pith_short_12","alias_value":"T4APXPIGUJFR","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"T4APXPIGUJFRIGFU","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"T4APXPIG","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:T4APXPIGUJFRIGFURWCVKXGM6F","target":"record","payload":{"canonical_record":{"source":{"id":"1801.00169","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-12-30T18:03:29Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"0409511f4ed8a1b203a688d96248d5ab51c48e55c1bcbddf8d2c6223c6ad2bc8","abstract_canon_sha256":"b6ef89b309cb937c9d77175926102f0b6e3409c81c0c797855ba231bd13a628a"},"schema_version":"1.0"},"canonical_sha256":"9f00fbbd06a24b1418b48d85555cccf175c1e95b34f8db649e6496987d467735","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:10.692016Z","signature_b64":"XwQBx7ZnzN6c4W//mikBet2AO58HoNus3Qk5lfJM8glYzb3SABH4SC7eRL/uHxKdt97OLg6HEbSFIJZIiOvQCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9f00fbbd06a24b1418b48d85555cccf175c1e95b34f8db649e6496987d467735","last_reissued_at":"2026-05-18T00:08:10.691533Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:10.691533Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.00169","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":"2026-05-18T00:08:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CoADcJCLZUF/L/2zQZYqnvkxg3KYMdMk+jO2PESzdbtmJyYxyhkQ6QNOKCYaCRQ8NFurdaT5TPi3tDFs1tirBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T06:29:50.240095Z"},"content_sha256":"aec17fbff96357c368cda0385e18c0cd3d84169f471caf35ef84bcbdb344a8bc","schema_version":"1.0","event_id":"sha256:aec17fbff96357c368cda0385e18c0cd3d84169f471caf35ef84bcbdb344a8bc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:T4APXPIGUJFRIGFURWCVKXGM6F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"OGLE-2016-BLG-1045: A Test of Cheap Space-Based Microlens Parallaxes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"A. Gould, A. Udalski, B.-G. Park, B. S. Gaudi, C. Beichman, C. B. Henderson, C. Han, C.-U. Lee, D.-J. Kim, D.-J. Lee, G. Bryden, G. Christie, H.-W. Kim, I.-G. Shin, I. Soszy\\'nski, J. C. Yee, J. Skowron, K.-H. Hwang, K. Ulaczyk, M. D. Albrow, M. K. Szyma\\'nski, M. Pawlak, P. Mr\\'oz, P. Pietrukowicz, R. Poleski, R. W. Pogge, S. Calchi Novati, S. Carey, S.-J. Chung, S. Koz{\\l}owski, S.-L. Kim, S.-M. Cha, T. Natusch, W. Zhu, Y.-H. Ryu, Y. K. Jung, Y. Lee, Y. Shvartzvald","submitted_at":"2017-12-30T18:03:29Z","abstract_excerpt":"Microlensing is a powerful and unique technique to probe isolated objects in the Galaxy. To study the characteristics of these interesting objects based on the microlensing method, measurement of the microlens parallax is required to determine the properties of the lens. Of the various methods to measure microlens parallax, the most robust way is to make simultaneous ground- and space-based observations, i.e., by measuring the space-based microlens parallax. However, space-based campaigns usually require \"expensive\" resources. Gould & Yee (2012) proposed an idea called the \"cheap space-based m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.00169","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":""},"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":"2026-05-18T00:08:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xxhvuTy9psCBtjG35NODLq/pSiwWgi8Bu31EE2+qM73Mk5kB+juej2NZDuSaVvpGA9yDuSY/j6jPCTcSJjLzDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T06:29:50.240864Z"},"content_sha256":"ca986c16bd2eb6dc7ca8847024917d2e1874dc0b598aaf03b4a743e62d412c89","schema_version":"1.0","event_id":"sha256:ca986c16bd2eb6dc7ca8847024917d2e1874dc0b598aaf03b4a743e62d412c89"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T4APXPIGUJFRIGFURWCVKXGM6F/bundle.json","state_url":"https://pith.science/pith/T4APXPIGUJFRIGFURWCVKXGM6F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T4APXPIGUJFRIGFURWCVKXGM6F/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":"2026-06-06T06:29:50Z","links":{"resolver":"https://pith.science/pith/T4APXPIGUJFRIGFURWCVKXGM6F","bundle":"https://pith.science/pith/T4APXPIGUJFRIGFURWCVKXGM6F/bundle.json","state":"https://pith.science/pith/T4APXPIGUJFRIGFURWCVKXGM6F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T4APXPIGUJFRIGFURWCVKXGM6F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:T4APXPIGUJFRIGFURWCVKXGM6F","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":"b6ef89b309cb937c9d77175926102f0b6e3409c81c0c797855ba231bd13a628a","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-12-30T18:03:29Z","title_canon_sha256":"0409511f4ed8a1b203a688d96248d5ab51c48e55c1bcbddf8d2c6223c6ad2bc8"},"schema_version":"1.0","source":{"id":"1801.00169","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.00169","created_at":"2026-05-18T00:08:10Z"},{"alias_kind":"arxiv_version","alias_value":"1801.00169v2","created_at":"2026-05-18T00:08:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.00169","created_at":"2026-05-18T00:08:10Z"},{"alias_kind":"pith_short_12","alias_value":"T4APXPIGUJFR","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"T4APXPIGUJFRIGFU","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"T4APXPIG","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:ca986c16bd2eb6dc7ca8847024917d2e1874dc0b598aaf03b4a743e62d412c89","target":"graph","created_at":"2026-05-18T00:08:10Z","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":"Microlensing is a powerful and unique technique to probe isolated objects in the Galaxy. To study the characteristics of these interesting objects based on the microlensing method, measurement of the microlens parallax is required to determine the properties of the lens. Of the various methods to measure microlens parallax, the most robust way is to make simultaneous ground- and space-based observations, i.e., by measuring the space-based microlens parallax. However, space-based campaigns usually require \"expensive\" resources. Gould & Yee (2012) proposed an idea called the \"cheap space-based m","authors_text":"A. Gould, A. Udalski, B.-G. Park, B. S. Gaudi, C. Beichman, C. B. Henderson, C. Han, C.-U. Lee, D.-J. Kim, D.-J. Lee, G. Bryden, G. Christie, H.-W. Kim, I.-G. Shin, I. Soszy\\'nski, J. C. Yee, J. Skowron, K.-H. Hwang, K. Ulaczyk, M. D. Albrow, M. K. Szyma\\'nski, M. Pawlak, P. Mr\\'oz, P. Pietrukowicz, R. Poleski, R. W. Pogge, S. Calchi Novati, S. Carey, S.-J. Chung, S. Koz{\\l}owski, S.-L. Kim, S.-M. Cha, T. Natusch, W. Zhu, Y.-H. Ryu, Y. K. Jung, Y. Lee, Y. Shvartzvald","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-12-30T18:03:29Z","title":"OGLE-2016-BLG-1045: A Test of Cheap Space-Based Microlens Parallaxes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.00169","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:aec17fbff96357c368cda0385e18c0cd3d84169f471caf35ef84bcbdb344a8bc","target":"record","created_at":"2026-05-18T00:08:10Z","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":"b6ef89b309cb937c9d77175926102f0b6e3409c81c0c797855ba231bd13a628a","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-12-30T18:03:29Z","title_canon_sha256":"0409511f4ed8a1b203a688d96248d5ab51c48e55c1bcbddf8d2c6223c6ad2bc8"},"schema_version":"1.0","source":{"id":"1801.00169","kind":"arxiv","version":2}},"canonical_sha256":"9f00fbbd06a24b1418b48d85555cccf175c1e95b34f8db649e6496987d467735","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9f00fbbd06a24b1418b48d85555cccf175c1e95b34f8db649e6496987d467735","first_computed_at":"2026-05-18T00:08:10.691533Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:08:10.691533Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XwQBx7ZnzN6c4W//mikBet2AO58HoNus3Qk5lfJM8glYzb3SABH4SC7eRL/uHxKdt97OLg6HEbSFIJZIiOvQCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:08:10.692016Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.00169","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aec17fbff96357c368cda0385e18c0cd3d84169f471caf35ef84bcbdb344a8bc","sha256:ca986c16bd2eb6dc7ca8847024917d2e1874dc0b598aaf03b4a743e62d412c89"],"state_sha256":"92c84a4644188d279f8c446a0ec941fa44cc91480bbcdfbb7b4def1308a6af9e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pL/oNcLx2W1+Jy2xe5isV6IvMJJ19rTiPeBz2ULshs6VB3G/sT+aMR3uRP9MlTUZRD4yFi8cR5e4XrSxIon/DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T06:29:50.246014Z","bundle_sha256":"be95d0cb56a61bb6cbd4791952ec86ce7c00025c6f4a10c348fe3576adb096fd"}}