{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:KMI73S46A4J2H4TRJVNUPY45JQ","short_pith_number":"pith:KMI73S46","canonical_record":{"source":{"id":"2403.13954","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-03-20T19:53:59Z","cross_cats_sorted":[],"title_canon_sha256":"a0195272db9958d81700601cd9ca7e371b37b3ff1dc5b8052c784d65ab17de64","abstract_canon_sha256":"e443f92ee96c0a59196822eec06451a0fb8cfe4b96bf04a52bff2257d739237c"},"schema_version":"1.0"},"canonical_sha256":"5311fdcb9e0713a3f2714d5b47e39d4c1669e4898687c33bbf42a670430b3b1c","source":{"kind":"arxiv","id":"2403.13954","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.13954","created_at":"2026-07-05T07:58:52Z"},{"alias_kind":"arxiv_version","alias_value":"2403.13954v1","created_at":"2026-07-05T07:58:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.13954","created_at":"2026-07-05T07:58:52Z"},{"alias_kind":"pith_short_12","alias_value":"KMI73S46A4J2","created_at":"2026-07-05T07:58:52Z"},{"alias_kind":"pith_short_16","alias_value":"KMI73S46A4J2H4TR","created_at":"2026-07-05T07:58:52Z"},{"alias_kind":"pith_short_8","alias_value":"KMI73S46","created_at":"2026-07-05T07:58:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:KMI73S46A4J2H4TRJVNUPY45JQ","target":"record","payload":{"canonical_record":{"source":{"id":"2403.13954","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-03-20T19:53:59Z","cross_cats_sorted":[],"title_canon_sha256":"a0195272db9958d81700601cd9ca7e371b37b3ff1dc5b8052c784d65ab17de64","abstract_canon_sha256":"e443f92ee96c0a59196822eec06451a0fb8cfe4b96bf04a52bff2257d739237c"},"schema_version":"1.0"},"canonical_sha256":"5311fdcb9e0713a3f2714d5b47e39d4c1669e4898687c33bbf42a670430b3b1c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:58:52.501778Z","signature_b64":"VSCcfwOC5bYQRWs8dVVg+WUCXBAk5OthfWS9CR4duT9FxZyMG8fA5jnbvZsp2m2G9clW2gBIGXRnkuxsfl7JBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5311fdcb9e0713a3f2714d5b47e39d4c1669e4898687c33bbf42a670430b3b1c","last_reissued_at":"2026-07-05T07:58:52.501233Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:58:52.501233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2403.13954","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":"2026-07-05T07:58:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w72RMhozHe5iOMWA1nHNTfNUGpIHvSFvNvy9FQmjA1BBtrfylLayH0lrQCMZ2fzllFei25T8kdwYHpaTUiDxBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T08:55:20.814711Z"},"content_sha256":"129ca35dd191c820d13a84893e1949c9461e914a037d59d1fd452e9f60293eb4","schema_version":"1.0","event_id":"sha256:129ca35dd191c820d13a84893e1949c9461e914a037d59d1fd452e9f60293eb4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:KMI73S46A4J2H4TRJVNUPY45JQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Eta Carinae left a curious ladder to climb","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Anthony F. J. Moffat, Augusto Damineli, Gerd Weigelt, Henrik Hartman, Michael F. Corcoran, Noel D. Richardson, Theodore R. Gull, Thomas Madura","submitted_at":"2024-03-20T19:53:59Z","abstract_excerpt":"Eta Carinae underwent the Great Eruption in the 1840s and a Lesser Eruption in the 1890s. Its apparent spectrum, modified by intervening ejecta, the Homunculus and Little Homunculus, continues to evolve but contains information pertaining to events in the 19th century. The LOS spectrum contains narrow absorption velocities, from -122 to -1665 km/s: rungs of a broken ladder caused by shells formed by the interacting winds. Estimated shell origin dates correlate with origin dates of expanding emission structures preceding the Great Eruption. The LOS absorption velocities extend the record post G"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.13954","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2403.13954/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T07:58:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zQ1syShPQ8GkUfWtzeClWbKGeyotY73qh4p+dSiicUVmbGPAMJ8cj3yVPStuSGLhvMLHRp7TLvLTMxj5/FgcCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T08:55:20.818263Z"},"content_sha256":"68e11354398fa0bac020b01815727fe8c998deae7385556ddf83511da965b319","schema_version":"1.0","event_id":"sha256:68e11354398fa0bac020b01815727fe8c998deae7385556ddf83511da965b319"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KMI73S46A4J2H4TRJVNUPY45JQ/bundle.json","state_url":"https://pith.science/pith/KMI73S46A4J2H4TRJVNUPY45JQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KMI73S46A4J2H4TRJVNUPY45JQ/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":"2026-08-14T08:55:20Z","links":{"resolver":"https://pith.science/pith/KMI73S46A4J2H4TRJVNUPY45JQ","bundle":"https://pith.science/pith/KMI73S46A4J2H4TRJVNUPY45JQ/bundle.json","state":"https://pith.science/pith/KMI73S46A4J2H4TRJVNUPY45JQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KMI73S46A4J2H4TRJVNUPY45JQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:KMI73S46A4J2H4TRJVNUPY45JQ","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":"e443f92ee96c0a59196822eec06451a0fb8cfe4b96bf04a52bff2257d739237c","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-03-20T19:53:59Z","title_canon_sha256":"a0195272db9958d81700601cd9ca7e371b37b3ff1dc5b8052c784d65ab17de64"},"schema_version":"1.0","source":{"id":"2403.13954","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.13954","created_at":"2026-07-05T07:58:52Z"},{"alias_kind":"arxiv_version","alias_value":"2403.13954v1","created_at":"2026-07-05T07:58:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.13954","created_at":"2026-07-05T07:58:52Z"},{"alias_kind":"pith_short_12","alias_value":"KMI73S46A4J2","created_at":"2026-07-05T07:58:52Z"},{"alias_kind":"pith_short_16","alias_value":"KMI73S46A4J2H4TR","created_at":"2026-07-05T07:58:52Z"},{"alias_kind":"pith_short_8","alias_value":"KMI73S46","created_at":"2026-07-05T07:58:52Z"}],"graph_snapshots":[{"event_id":"sha256:68e11354398fa0bac020b01815727fe8c998deae7385556ddf83511da965b319","target":"graph","created_at":"2026-07-05T07:58:52Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2403.13954/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Eta Carinae underwent the Great Eruption in the 1840s and a Lesser Eruption in the 1890s. Its apparent spectrum, modified by intervening ejecta, the Homunculus and Little Homunculus, continues to evolve but contains information pertaining to events in the 19th century. The LOS spectrum contains narrow absorption velocities, from -122 to -1665 km/s: rungs of a broken ladder caused by shells formed by the interacting winds. Estimated shell origin dates correlate with origin dates of expanding emission structures preceding the Great Eruption. The LOS absorption velocities extend the record post G","authors_text":"Anthony F. J. Moffat, Augusto Damineli, Gerd Weigelt, Henrik Hartman, Michael F. Corcoran, Noel D. Richardson, Theodore R. Gull, Thomas Madura","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-03-20T19:53:59Z","title":"Eta Carinae left a curious ladder to climb"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.13954","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":"sha256:129ca35dd191c820d13a84893e1949c9461e914a037d59d1fd452e9f60293eb4","target":"record","created_at":"2026-07-05T07:58:52Z","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":"e443f92ee96c0a59196822eec06451a0fb8cfe4b96bf04a52bff2257d739237c","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-03-20T19:53:59Z","title_canon_sha256":"a0195272db9958d81700601cd9ca7e371b37b3ff1dc5b8052c784d65ab17de64"},"schema_version":"1.0","source":{"id":"2403.13954","kind":"arxiv","version":1}},"canonical_sha256":"5311fdcb9e0713a3f2714d5b47e39d4c1669e4898687c33bbf42a670430b3b1c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5311fdcb9e0713a3f2714d5b47e39d4c1669e4898687c33bbf42a670430b3b1c","first_computed_at":"2026-07-05T07:58:52.501233Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:58:52.501233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VSCcfwOC5bYQRWs8dVVg+WUCXBAk5OthfWS9CR4duT9FxZyMG8fA5jnbvZsp2m2G9clW2gBIGXRnkuxsfl7JBg==","signature_status":"signed_v1","signed_at":"2026-07-05T07:58:52.501778Z","signed_message":"canonical_sha256_bytes"},"source_id":"2403.13954","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:129ca35dd191c820d13a84893e1949c9461e914a037d59d1fd452e9f60293eb4","sha256:68e11354398fa0bac020b01815727fe8c998deae7385556ddf83511da965b319"],"state_sha256":"8a433a8f8743f5db1094997d9286ccaeccd2ac3c98c2c50c5bca0f29d9aadda4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SpNKOxoHawsrO2Q0RNZUwTXiNUqJ2eAMV5sFLJDE8moBBiQB3ijeP77mtrlzTxrt835E5gTA1GqN0F3vj8cvAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T08:55:20.826313Z","bundle_sha256":"0beec81e898c5de28c82944bd42ec7000380101bc67afed80167386df5d8d2fc"}}