{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:GLEPGQMLUGPTK2OULV4W4RV2JA","short_pith_number":"pith:GLEPGQML","canonical_record":{"source":{"id":"1508.00678","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-08-04T06:46:02Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"bead86cb7c901acaabdeee6e14be632b592cf5358e32642fe4d8be767f2d3f06","abstract_canon_sha256":"57f2ddec05b20f34bec1fb574a988bebc103f46e0afd30f68cfbbf55a34c27a2"},"schema_version":"1.0"},"canonical_sha256":"32c8f3418ba19f3569d45d796e46ba4816f1d772e3a46602c102e18e89f9bf6b","source":{"kind":"arxiv","id":"1508.00678","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.00678","created_at":"2026-05-18T01:22:37Z"},{"alias_kind":"arxiv_version","alias_value":"1508.00678v1","created_at":"2026-05-18T01:22:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.00678","created_at":"2026-05-18T01:22:37Z"},{"alias_kind":"pith_short_12","alias_value":"GLEPGQMLUGPT","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GLEPGQMLUGPTK2OU","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GLEPGQML","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:GLEPGQMLUGPTK2OULV4W4RV2JA","target":"record","payload":{"canonical_record":{"source":{"id":"1508.00678","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-08-04T06:46:02Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"bead86cb7c901acaabdeee6e14be632b592cf5358e32642fe4d8be767f2d3f06","abstract_canon_sha256":"57f2ddec05b20f34bec1fb574a988bebc103f46e0afd30f68cfbbf55a34c27a2"},"schema_version":"1.0"},"canonical_sha256":"32c8f3418ba19f3569d45d796e46ba4816f1d772e3a46602c102e18e89f9bf6b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:37.294653Z","signature_b64":"gNY4PlzGf4ID/esyB8GBMawG1qS13i5jb9rZIjXuvaBBUM7xvF6Jq+G2+t4NnUHKEG4ryN4/BNUiRQf9cs4gAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"32c8f3418ba19f3569d45d796e46ba4816f1d772e3a46602c102e18e89f9bf6b","last_reissued_at":"2026-05-18T01:22:37.294267Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:37.294267Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.00678","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":"2026-05-18T01:22:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"buvpXg3yGUxygk0Dve46nl2YfjUmNxIQXuKOFpZCyOWBX+LF/ZYyopcdHbhqYmARfFuSWsa5M3rqoQ8fslqjCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T07:50:13.578156Z"},"content_sha256":"4d413bf011d89fdb5b5f8fe8fda3190bcbbfa17926120409858ade5c9e53b31f","schema_version":"1.0","event_id":"sha256:4d413bf011d89fdb5b5f8fe8fda3190bcbbfa17926120409858ade5c9e53b31f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:GLEPGQMLUGPTK2OULV4W4RV2JA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Global Mg/Si and Al/Si Distributions on Lunar Surface Derived from Chang'E-2 X-ray Spectrometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.EP","authors_text":"Aoao Xu, Meng-Hua Zhu, Wu-Dong Dong, Xiaoping Zhang, Zesheng Tang","submitted_at":"2015-08-04T06:46:02Z","abstract_excerpt":"X-ray fluorescence remote sensing technique plays a significant role in the chemical compositions research of the Moon. Here we describe the data analysis method for China's Chang'E-2 X-ray spectrometer (CE2XRS) in detail and present the preliminary results: the first global Mg/Si and Al/Si maps on the lunar surface. Our results show that the distributions of Mg/Si and Al/Si correlate well with the terrains of the Moon. The higher Mg/Si ratio corresponding to the mare regions while the lower value corresponding to the highland terrains. The map of Al/Si ratio shows a reverse relationship with "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.00678","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":"2026-05-18T01:22:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S5E24ollivl9VoP1yeNskhdQdjkdETgYopsNVauMaYoBGTLYf63knhkIPUPq2WpR5YQ+vBxYEaG4Ax+SxYT+Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T07:50:13.578579Z"},"content_sha256":"b4eb7ff501072ee9787835f78d5682836b849951cbc0f653aefb00a0a23a2b0a","schema_version":"1.0","event_id":"sha256:b4eb7ff501072ee9787835f78d5682836b849951cbc0f653aefb00a0a23a2b0a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GLEPGQMLUGPTK2OULV4W4RV2JA/bundle.json","state_url":"https://pith.science/pith/GLEPGQMLUGPTK2OULV4W4RV2JA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GLEPGQMLUGPTK2OULV4W4RV2JA/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":"2026-06-07T07:50:13Z","links":{"resolver":"https://pith.science/pith/GLEPGQMLUGPTK2OULV4W4RV2JA","bundle":"https://pith.science/pith/GLEPGQMLUGPTK2OULV4W4RV2JA/bundle.json","state":"https://pith.science/pith/GLEPGQMLUGPTK2OULV4W4RV2JA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GLEPGQMLUGPTK2OULV4W4RV2JA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:GLEPGQMLUGPTK2OULV4W4RV2JA","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":"57f2ddec05b20f34bec1fb574a988bebc103f46e0afd30f68cfbbf55a34c27a2","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-08-04T06:46:02Z","title_canon_sha256":"bead86cb7c901acaabdeee6e14be632b592cf5358e32642fe4d8be767f2d3f06"},"schema_version":"1.0","source":{"id":"1508.00678","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.00678","created_at":"2026-05-18T01:22:37Z"},{"alias_kind":"arxiv_version","alias_value":"1508.00678v1","created_at":"2026-05-18T01:22:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.00678","created_at":"2026-05-18T01:22:37Z"},{"alias_kind":"pith_short_12","alias_value":"GLEPGQMLUGPT","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GLEPGQMLUGPTK2OU","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GLEPGQML","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:b4eb7ff501072ee9787835f78d5682836b849951cbc0f653aefb00a0a23a2b0a","target":"graph","created_at":"2026-05-18T01:22:37Z","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":"X-ray fluorescence remote sensing technique plays a significant role in the chemical compositions research of the Moon. Here we describe the data analysis method for China's Chang'E-2 X-ray spectrometer (CE2XRS) in detail and present the preliminary results: the first global Mg/Si and Al/Si maps on the lunar surface. Our results show that the distributions of Mg/Si and Al/Si correlate well with the terrains of the Moon. The higher Mg/Si ratio corresponding to the mare regions while the lower value corresponding to the highland terrains. The map of Al/Si ratio shows a reverse relationship with ","authors_text":"Aoao Xu, Meng-Hua Zhu, Wu-Dong Dong, Xiaoping Zhang, Zesheng Tang","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-08-04T06:46:02Z","title":"Global Mg/Si and Al/Si Distributions on Lunar Surface Derived from Chang'E-2 X-ray Spectrometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.00678","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":"sha256:4d413bf011d89fdb5b5f8fe8fda3190bcbbfa17926120409858ade5c9e53b31f","target":"record","created_at":"2026-05-18T01:22:37Z","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":"57f2ddec05b20f34bec1fb574a988bebc103f46e0afd30f68cfbbf55a34c27a2","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-08-04T06:46:02Z","title_canon_sha256":"bead86cb7c901acaabdeee6e14be632b592cf5358e32642fe4d8be767f2d3f06"},"schema_version":"1.0","source":{"id":"1508.00678","kind":"arxiv","version":1}},"canonical_sha256":"32c8f3418ba19f3569d45d796e46ba4816f1d772e3a46602c102e18e89f9bf6b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"32c8f3418ba19f3569d45d796e46ba4816f1d772e3a46602c102e18e89f9bf6b","first_computed_at":"2026-05-18T01:22:37.294267Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:37.294267Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gNY4PlzGf4ID/esyB8GBMawG1qS13i5jb9rZIjXuvaBBUM7xvF6Jq+G2+t4NnUHKEG4ryN4/BNUiRQf9cs4gAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:37.294653Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.00678","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4d413bf011d89fdb5b5f8fe8fda3190bcbbfa17926120409858ade5c9e53b31f","sha256:b4eb7ff501072ee9787835f78d5682836b849951cbc0f653aefb00a0a23a2b0a"],"state_sha256":"9cb0b98b610aec2dcccf67ae04af995e9cdc457d39275312572b53408577aa05"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zSehczeqlvDWLblAKCsq0dy1bqkpOEG4W4Ne2leDDDTiKN5jfNmD/olQ5SA3/2gc2OEarmyRJQrt9MumS3JyBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T07:50:13.582602Z","bundle_sha256":"8d40a898e21a06ce3cc85a0463b71b87375d402c1f0bb3d13242ea656f42bb1b"}}