{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:BRI3KGWOCHJEWTKSERR5BZ2OIH","short_pith_number":"pith:BRI3KGWO","canonical_record":{"source":{"id":"1903.02475","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-03-06T16:10:29Z","cross_cats_sorted":[],"title_canon_sha256":"a670246962fa33ee74a7059b633ac257db2d3f72c13dc761194a965f6066ccdb","abstract_canon_sha256":"8b794106dba9449c280bac047a8c5cfcca7637b1567a8110395edc5be5b4ac51"},"schema_version":"1.0"},"canonical_sha256":"0c51b51ace11d24b4d522463d0e74e41e4a700c3f630667d6c6cf07e1737c60f","source":{"kind":"arxiv","id":"1903.02475","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.02475","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"arxiv_version","alias_value":"1903.02475v2","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.02475","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"pith_short_12","alias_value":"BRI3KGWOCHJE","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"BRI3KGWOCHJEWTKS","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"BRI3KGWO","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:BRI3KGWOCHJEWTKSERR5BZ2OIH","target":"record","payload":{"canonical_record":{"source":{"id":"1903.02475","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-03-06T16:10:29Z","cross_cats_sorted":[],"title_canon_sha256":"a670246962fa33ee74a7059b633ac257db2d3f72c13dc761194a965f6066ccdb","abstract_canon_sha256":"8b794106dba9449c280bac047a8c5cfcca7637b1567a8110395edc5be5b4ac51"},"schema_version":"1.0"},"canonical_sha256":"0c51b51ace11d24b4d522463d0e74e41e4a700c3f630667d6c6cf07e1737c60f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:49.879590Z","signature_b64":"YXGqctqPClzBBPLSeOgCcXnnhxuxxsNi13WsB5V4UiTOa4J8EvBc5oVHkGCUO08cYjTrxC5t+55rgYT/4ddDCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c51b51ace11d24b4d522463d0e74e41e4a700c3f630667d6c6cf07e1737c60f","last_reissued_at":"2026-05-17T23:49:49.879092Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:49.879092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.02475","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":"2026-05-17T23:49:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ib59bKHomN4z8hhwjeAFKahQd6DFJloK8L9Gl9zXqVEZfCC7aXshwNfPNOTYRqcC/8sPuPftDlFCnGqxFZTKDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T10:12:10.383381Z"},"content_sha256":"0b7ad2067a69685d1f0a3742bfc26eb47ddb0299380e11ea16cfb78eb88c57dd","schema_version":"1.0","event_id":"sha256:0b7ad2067a69685d1f0a3742bfc26eb47ddb0299380e11ea16cfb78eb88c57dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:BRI3KGWOCHJEWTKSERR5BZ2OIH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"4MOST Consortium Survey 9: One Thousand and One Magellanic Fields (1001MC)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Koch, B. Lemasle, C. Gonz\\'alez-Fern\\'andez, C.P.M. Bell, D. El Youssoufi, D. Hobbs, E.K. Grebel, F. Niederhofer, J.M. Bestenlehner, J. Storm, M. Irwin, M.-R.L. Cioni, M. Steinmetz, O. Schnurr, P. Jablonka, S. Feltzing, T. Schmidt","submitted_at":"2019-03-06T16:10:29Z","abstract_excerpt":"The One Thousand and One Magellanic Fields (1001MC) survey aims to measure the kinematics and elemental abundances of many different stellar populations that sample the history of formation and interaction of the Magellanic Clouds. The survey will collect spectra of about half a million stars with $G < 19.5$ magnitudes (Vega) distributed over an area of about 1000 square degrees and will provide an invaluable dataset for a wide range of scientific applications."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.02475","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":"2026-05-17T23:49:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AIuARNI1vTvDcYvNApaz50WmV+Gc4u71oHAqAh1T4nApbWWcCCBNl5Rgd+o1EQLOYct93xiLmbIWNOq7RlRnDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T10:12:10.384038Z"},"content_sha256":"ad9dc1c5558373740a667c38a2fa8e9c40b6808d91e7f0852c9b862e0dfc1436","schema_version":"1.0","event_id":"sha256:ad9dc1c5558373740a667c38a2fa8e9c40b6808d91e7f0852c9b862e0dfc1436"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BRI3KGWOCHJEWTKSERR5BZ2OIH/bundle.json","state_url":"https://pith.science/pith/BRI3KGWOCHJEWTKSERR5BZ2OIH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BRI3KGWOCHJEWTKSERR5BZ2OIH/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":"2026-06-10T10:12:10Z","links":{"resolver":"https://pith.science/pith/BRI3KGWOCHJEWTKSERR5BZ2OIH","bundle":"https://pith.science/pith/BRI3KGWOCHJEWTKSERR5BZ2OIH/bundle.json","state":"https://pith.science/pith/BRI3KGWOCHJEWTKSERR5BZ2OIH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BRI3KGWOCHJEWTKSERR5BZ2OIH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:BRI3KGWOCHJEWTKSERR5BZ2OIH","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":"8b794106dba9449c280bac047a8c5cfcca7637b1567a8110395edc5be5b4ac51","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-03-06T16:10:29Z","title_canon_sha256":"a670246962fa33ee74a7059b633ac257db2d3f72c13dc761194a965f6066ccdb"},"schema_version":"1.0","source":{"id":"1903.02475","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.02475","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"arxiv_version","alias_value":"1903.02475v2","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.02475","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"pith_short_12","alias_value":"BRI3KGWOCHJE","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"BRI3KGWOCHJEWTKS","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"BRI3KGWO","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:ad9dc1c5558373740a667c38a2fa8e9c40b6808d91e7f0852c9b862e0dfc1436","target":"graph","created_at":"2026-05-17T23:49:49Z","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":"The One Thousand and One Magellanic Fields (1001MC) survey aims to measure the kinematics and elemental abundances of many different stellar populations that sample the history of formation and interaction of the Magellanic Clouds. The survey will collect spectra of about half a million stars with $G < 19.5$ magnitudes (Vega) distributed over an area of about 1000 square degrees and will provide an invaluable dataset for a wide range of scientific applications.","authors_text":"A. Koch, B. Lemasle, C. Gonz\\'alez-Fern\\'andez, C.P.M. Bell, D. El Youssoufi, D. Hobbs, E.K. Grebel, F. Niederhofer, J.M. Bestenlehner, J. Storm, M. Irwin, M.-R.L. Cioni, M. Steinmetz, O. Schnurr, P. Jablonka, S. Feltzing, T. Schmidt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-03-06T16:10:29Z","title":"4MOST Consortium Survey 9: One Thousand and One Magellanic Fields (1001MC)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.02475","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":"sha256:0b7ad2067a69685d1f0a3742bfc26eb47ddb0299380e11ea16cfb78eb88c57dd","target":"record","created_at":"2026-05-17T23:49:49Z","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":"8b794106dba9449c280bac047a8c5cfcca7637b1567a8110395edc5be5b4ac51","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-03-06T16:10:29Z","title_canon_sha256":"a670246962fa33ee74a7059b633ac257db2d3f72c13dc761194a965f6066ccdb"},"schema_version":"1.0","source":{"id":"1903.02475","kind":"arxiv","version":2}},"canonical_sha256":"0c51b51ace11d24b4d522463d0e74e41e4a700c3f630667d6c6cf07e1737c60f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c51b51ace11d24b4d522463d0e74e41e4a700c3f630667d6c6cf07e1737c60f","first_computed_at":"2026-05-17T23:49:49.879092Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:49.879092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YXGqctqPClzBBPLSeOgCcXnnhxuxxsNi13WsB5V4UiTOa4J8EvBc5oVHkGCUO08cYjTrxC5t+55rgYT/4ddDCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:49.879590Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.02475","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b7ad2067a69685d1f0a3742bfc26eb47ddb0299380e11ea16cfb78eb88c57dd","sha256:ad9dc1c5558373740a667c38a2fa8e9c40b6808d91e7f0852c9b862e0dfc1436"],"state_sha256":"43a0a7fb22c50f59318e1f6867679ab08fc0a7636a6ca3bd70037be0b676116e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9CBzqPmPGWLOib70qu+gY/Gbqg3dyw7JMCguTipxnFra4wjMkfe+phAV6fJHcFVHMfIfnV7g2iLMGEPDmSS7CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T10:12:10.388190Z","bundle_sha256":"db6bdc49a4dfa97dad4a214e89fd03368e00596b4e37d68bf7b1266164ce6db9"}}