{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:CK2I5YIHYOQ35DRUAUBRICN3RL","short_pith_number":"pith:CK2I5YIH","canonical_record":{"source":{"id":"0904.4184","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-04-27T15:40:14Z","cross_cats_sorted":[],"title_canon_sha256":"318c51be34e284f880abf532202f52f0616a87d42e6d3c8c6a37cdaf5fce114d","abstract_canon_sha256":"b0da7faec33a4971d7bae4a81671bff1487592b3e00954171ea5d00ba7c097fe"},"schema_version":"1.0"},"canonical_sha256":"12b48ee107c3a1be8e3405031409bb8ac2a3e63c462af2f5505922489892b57a","source":{"kind":"arxiv","id":"0904.4184","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.4184","created_at":"2026-05-18T04:36:09Z"},{"alias_kind":"arxiv_version","alias_value":"0904.4184v3","created_at":"2026-05-18T04:36:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.4184","created_at":"2026-05-18T04:36:09Z"},{"alias_kind":"pith_short_12","alias_value":"CK2I5YIHYOQ3","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"CK2I5YIHYOQ35DRU","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"CK2I5YIH","created_at":"2026-05-18T12:25:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:CK2I5YIHYOQ35DRUAUBRICN3RL","target":"record","payload":{"canonical_record":{"source":{"id":"0904.4184","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-04-27T15:40:14Z","cross_cats_sorted":[],"title_canon_sha256":"318c51be34e284f880abf532202f52f0616a87d42e6d3c8c6a37cdaf5fce114d","abstract_canon_sha256":"b0da7faec33a4971d7bae4a81671bff1487592b3e00954171ea5d00ba7c097fe"},"schema_version":"1.0"},"canonical_sha256":"12b48ee107c3a1be8e3405031409bb8ac2a3e63c462af2f5505922489892b57a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:36:09.468090Z","signature_b64":"6fhl5ShTBbYTala3/9l9SbbdZPzDgDIZdb6cBTTY/PjlR+V4Jn/2uea69hv0pGVY0o5u5Eb9VfFipDILDYD6DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"12b48ee107c3a1be8e3405031409bb8ac2a3e63c462af2f5505922489892b57a","last_reissued_at":"2026-05-18T04:36:09.467385Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:36:09.467385Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0904.4184","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:36:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B3QIt0P1IKcnZ4RMO7NGKAgXxDs8Y/T/ncrXE/ao+nT6NFe8s4DYX2FGQhnGj5oK3ns/q/5mFSZR7qsRekiyCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T03:37:13.509901Z"},"content_sha256":"10de742c6a54802446ef66297e93d63ed341ecb63c0f36733cd7ff3f3762f016","schema_version":"1.0","event_id":"sha256:10de742c6a54802446ef66297e93d63ed341ecb63c0f36733cd7ff3f3762f016"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:CK2I5YIHYOQ35DRUAUBRICN3RL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Catalogue of Spacetimes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Frank Grave, Thomas Mueller","submitted_at":"2009-04-27T15:40:14Z","abstract_excerpt":"The Catalogue of Spacetimes is a collection of four-dimensional Lorentzian spacetimes in the context of the General Theory of Relativity (GR). The aim of the catalogue is to give a quick reference for students who need some basic facts of the most well-known spacetimes in GR."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.4184","kind":"arxiv","version":3},"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":"2026-05-18T04:36:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4WZJjWEgXO00+dUZMll+pn9Eb0MryBgneX2b+7+hgyUww1bNHxcRJNX6QstpuEmJeopSY7yhWULy3vdzSDGfAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T03:37:13.510253Z"},"content_sha256":"e75496c4af908fa0595a11cf0d84b0897ab92de69a02b50b2b994cbe6edc4d95","schema_version":"1.0","event_id":"sha256:e75496c4af908fa0595a11cf0d84b0897ab92de69a02b50b2b994cbe6edc4d95"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CK2I5YIHYOQ35DRUAUBRICN3RL/bundle.json","state_url":"https://pith.science/pith/CK2I5YIHYOQ35DRUAUBRICN3RL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CK2I5YIHYOQ35DRUAUBRICN3RL/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":"2026-05-25T03:37:13Z","links":{"resolver":"https://pith.science/pith/CK2I5YIHYOQ35DRUAUBRICN3RL","bundle":"https://pith.science/pith/CK2I5YIHYOQ35DRUAUBRICN3RL/bundle.json","state":"https://pith.science/pith/CK2I5YIHYOQ35DRUAUBRICN3RL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CK2I5YIHYOQ35DRUAUBRICN3RL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:CK2I5YIHYOQ35DRUAUBRICN3RL","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":"b0da7faec33a4971d7bae4a81671bff1487592b3e00954171ea5d00ba7c097fe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-04-27T15:40:14Z","title_canon_sha256":"318c51be34e284f880abf532202f52f0616a87d42e6d3c8c6a37cdaf5fce114d"},"schema_version":"1.0","source":{"id":"0904.4184","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.4184","created_at":"2026-05-18T04:36:09Z"},{"alias_kind":"arxiv_version","alias_value":"0904.4184v3","created_at":"2026-05-18T04:36:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.4184","created_at":"2026-05-18T04:36:09Z"},{"alias_kind":"pith_short_12","alias_value":"CK2I5YIHYOQ3","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"CK2I5YIHYOQ35DRU","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"CK2I5YIH","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:e75496c4af908fa0595a11cf0d84b0897ab92de69a02b50b2b994cbe6edc4d95","target":"graph","created_at":"2026-05-18T04:36:09Z","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 Catalogue of Spacetimes is a collection of four-dimensional Lorentzian spacetimes in the context of the General Theory of Relativity (GR). The aim of the catalogue is to give a quick reference for students who need some basic facts of the most well-known spacetimes in GR.","authors_text":"Frank Grave, Thomas Mueller","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-04-27T15:40:14Z","title":"Catalogue of Spacetimes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.4184","kind":"arxiv","version":3},"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":"sha256:10de742c6a54802446ef66297e93d63ed341ecb63c0f36733cd7ff3f3762f016","target":"record","created_at":"2026-05-18T04:36:09Z","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":"b0da7faec33a4971d7bae4a81671bff1487592b3e00954171ea5d00ba7c097fe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-04-27T15:40:14Z","title_canon_sha256":"318c51be34e284f880abf532202f52f0616a87d42e6d3c8c6a37cdaf5fce114d"},"schema_version":"1.0","source":{"id":"0904.4184","kind":"arxiv","version":3}},"canonical_sha256":"12b48ee107c3a1be8e3405031409bb8ac2a3e63c462af2f5505922489892b57a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"12b48ee107c3a1be8e3405031409bb8ac2a3e63c462af2f5505922489892b57a","first_computed_at":"2026-05-18T04:36:09.467385Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:36:09.467385Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6fhl5ShTBbYTala3/9l9SbbdZPzDgDIZdb6cBTTY/PjlR+V4Jn/2uea69hv0pGVY0o5u5Eb9VfFipDILDYD6DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:36:09.468090Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.4184","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:10de742c6a54802446ef66297e93d63ed341ecb63c0f36733cd7ff3f3762f016","sha256:e75496c4af908fa0595a11cf0d84b0897ab92de69a02b50b2b994cbe6edc4d95"],"state_sha256":"c5bdbdbdb28fb14dfbf013ee6294a92ac33f4b7296c398e2d718a25e1539a61d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VIRJv0WtsO8Z8invC7qHpK8Q8JlmMQ7ZVlTlNw+MENKbQcMRt0/9E6msud+BIy4u8nArM4W/NBn1oHHsfmT+Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T03:37:13.512692Z","bundle_sha256":"800b5c4551f98b12abd28bb32d084c3017e450557f6d81c5e45c1b7fb7360a7d"}}