{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:XT4ZJYKJEJU4XMHCZM3EXIYJRL","short_pith_number":"pith:XT4ZJYKJ","canonical_record":{"source":{"id":"1110.0518","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-03T21:36:29Z","cross_cats_sorted":[],"title_canon_sha256":"6fbe28c1f7f30db9d64195a8a943b8acb9475ec4f2320cace02b748016cace66","abstract_canon_sha256":"69e4851a9138d3efe790b92668444aa46f84156200a253c47ad287a329fc3b65"},"schema_version":"1.0"},"canonical_sha256":"bcf994e1492269cbb0e2cb364ba3098afd3aa6d43dddbd2f90356f6931b9a237","source":{"kind":"arxiv","id":"1110.0518","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.0518","created_at":"2026-05-17T23:45:41Z"},{"alias_kind":"arxiv_version","alias_value":"1110.0518v1","created_at":"2026-05-17T23:45:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.0518","created_at":"2026-05-17T23:45:41Z"},{"alias_kind":"pith_short_12","alias_value":"XT4ZJYKJEJU4","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"XT4ZJYKJEJU4XMHC","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"XT4ZJYKJ","created_at":"2026-05-18T12:26:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:XT4ZJYKJEJU4XMHCZM3EXIYJRL","target":"record","payload":{"canonical_record":{"source":{"id":"1110.0518","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-03T21:36:29Z","cross_cats_sorted":[],"title_canon_sha256":"6fbe28c1f7f30db9d64195a8a943b8acb9475ec4f2320cace02b748016cace66","abstract_canon_sha256":"69e4851a9138d3efe790b92668444aa46f84156200a253c47ad287a329fc3b65"},"schema_version":"1.0"},"canonical_sha256":"bcf994e1492269cbb0e2cb364ba3098afd3aa6d43dddbd2f90356f6931b9a237","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:45:41.927535Z","signature_b64":"DpIfMDXp0r1+94ltdTLpWUxq2d6kJN7s8O32PxiDf88qXFbkXgXNeA+o1nOH10CD8QZWDy+3tWxaOFuN/PX+Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bcf994e1492269cbb0e2cb364ba3098afd3aa6d43dddbd2f90356f6931b9a237","last_reissued_at":"2026-05-17T23:45:41.927019Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:45:41.927019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1110.0518","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":"2026-05-17T23:45:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LYXhax2Oufu0YL7QuKZmQi8aoE0EdltgDFL92I3DcgURL+OGrkXb36FRbS+x8nXLFjUOQ+aB0F/01gDBAFcwAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:26:46.083895Z"},"content_sha256":"0341b700fd9b7f8704bae6e365bfbfb0db467882e5b049b6c65c9e41ff21314b","schema_version":"1.0","event_id":"sha256:0341b700fd9b7f8704bae6e365bfbfb0db467882e5b049b6c65c9e41ff21314b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:XT4ZJYKJEJU4XMHCZM3EXIYJRL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"IVOA Recommendation: The UCD1+ controlled vocabulary Version 1.23","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Andrea Preite Martinez, Francois Ochsenbein, Guy Rixon, Jonathan McDowell, Nausicaa Delmotte, Norman Gray, Pedro Osuna, Robert Mann, Roy Williams, Sebastien Derriere, Thomas Mc Glynn","submitted_at":"2011-10-03T21:36:29Z","abstract_excerpt":"This document describes the list of controlled terms used to build the Unified Content Descriptors, Version 1+ (UCD1+). The document describing the UCD1+ can be found at the URL: http://www.ivoa.net/Documents/latest/UCD.html. This document reviews the structure of the UCD1+ and presents the current vocabulary."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.0518","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":"2026-05-17T23:45:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vro2WpMyZwSZruoKZ+QhoVfzn41pf7CyI2JCXD8d5WzRvd6ya8bDz1np6w5SmwUOYPq/45ZxBNiroN19enY8Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:26:46.084486Z"},"content_sha256":"f6573c84c495363b49b5c3f16bb660ead939d816020cf269b536ace2da75f77d","schema_version":"1.0","event_id":"sha256:f6573c84c495363b49b5c3f16bb660ead939d816020cf269b536ace2da75f77d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XT4ZJYKJEJU4XMHCZM3EXIYJRL/bundle.json","state_url":"https://pith.science/pith/XT4ZJYKJEJU4XMHCZM3EXIYJRL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XT4ZJYKJEJU4XMHCZM3EXIYJRL/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":"2026-05-25T16:26:46Z","links":{"resolver":"https://pith.science/pith/XT4ZJYKJEJU4XMHCZM3EXIYJRL","bundle":"https://pith.science/pith/XT4ZJYKJEJU4XMHCZM3EXIYJRL/bundle.json","state":"https://pith.science/pith/XT4ZJYKJEJU4XMHCZM3EXIYJRL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XT4ZJYKJEJU4XMHCZM3EXIYJRL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:XT4ZJYKJEJU4XMHCZM3EXIYJRL","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":"69e4851a9138d3efe790b92668444aa46f84156200a253c47ad287a329fc3b65","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-03T21:36:29Z","title_canon_sha256":"6fbe28c1f7f30db9d64195a8a943b8acb9475ec4f2320cace02b748016cace66"},"schema_version":"1.0","source":{"id":"1110.0518","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.0518","created_at":"2026-05-17T23:45:41Z"},{"alias_kind":"arxiv_version","alias_value":"1110.0518v1","created_at":"2026-05-17T23:45:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.0518","created_at":"2026-05-17T23:45:41Z"},{"alias_kind":"pith_short_12","alias_value":"XT4ZJYKJEJU4","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"XT4ZJYKJEJU4XMHC","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"XT4ZJYKJ","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:f6573c84c495363b49b5c3f16bb660ead939d816020cf269b536ace2da75f77d","target":"graph","created_at":"2026-05-17T23:45:41Z","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":"This document describes the list of controlled terms used to build the Unified Content Descriptors, Version 1+ (UCD1+). The document describing the UCD1+ can be found at the URL: http://www.ivoa.net/Documents/latest/UCD.html. This document reviews the structure of the UCD1+ and presents the current vocabulary.","authors_text":"Andrea Preite Martinez, Francois Ochsenbein, Guy Rixon, Jonathan McDowell, Nausicaa Delmotte, Norman Gray, Pedro Osuna, Robert Mann, Roy Williams, Sebastien Derriere, Thomas Mc Glynn","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-03T21:36:29Z","title":"IVOA Recommendation: The UCD1+ controlled vocabulary Version 1.23"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.0518","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":"sha256:0341b700fd9b7f8704bae6e365bfbfb0db467882e5b049b6c65c9e41ff21314b","target":"record","created_at":"2026-05-17T23:45:41Z","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":"69e4851a9138d3efe790b92668444aa46f84156200a253c47ad287a329fc3b65","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-03T21:36:29Z","title_canon_sha256":"6fbe28c1f7f30db9d64195a8a943b8acb9475ec4f2320cace02b748016cace66"},"schema_version":"1.0","source":{"id":"1110.0518","kind":"arxiv","version":1}},"canonical_sha256":"bcf994e1492269cbb0e2cb364ba3098afd3aa6d43dddbd2f90356f6931b9a237","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bcf994e1492269cbb0e2cb364ba3098afd3aa6d43dddbd2f90356f6931b9a237","first_computed_at":"2026-05-17T23:45:41.927019Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:41.927019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DpIfMDXp0r1+94ltdTLpWUxq2d6kJN7s8O32PxiDf88qXFbkXgXNeA+o1nOH10CD8QZWDy+3tWxaOFuN/PX+Dw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:41.927535Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.0518","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0341b700fd9b7f8704bae6e365bfbfb0db467882e5b049b6c65c9e41ff21314b","sha256:f6573c84c495363b49b5c3f16bb660ead939d816020cf269b536ace2da75f77d"],"state_sha256":"1fae2082da8a788a98bc5cff4adf801eb24b61e1b22ab0fceedbd17212c5f382"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jfbW3KDEcMe+CsNYMGA5u6mOBtG+kmicUS5x7ePJGNc+ZXIndPB9CHfwE4kMXlxzZi2g395+qdEbwuyY8c6CDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T16:26:46.088028Z","bundle_sha256":"88b5df2f626e9db6ce8972f2aff8debfe1b8fce2c63d9a1acb7cf88cdc4c6390"}}