{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1997:5ER7PLXDF2SU2ATRTVU7G3YFHI","short_pith_number":"pith:5ER7PLXD","canonical_record":{"source":{"id":"astro-ph/9708072","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1997-08-07T21:17:23Z","cross_cats_sorted":[],"title_canon_sha256":"90dc3bdc6328cf30c95dd54ba75a5d842828d88ad19c4d6a04fd2dd7be2728f3","abstract_canon_sha256":"991c09d3f0164be1cac3a20e2194bd090cdd4982e31c502420147dca16bcd2e0"},"schema_version":"1.0"},"canonical_sha256":"e923f7aee32ea54d02719d69f36f053a27002b2e6294c46b23f84938971a7809","source":{"kind":"arxiv","id":"astro-ph/9708072","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9708072","created_at":"2026-07-04T16:03:10Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9708072v1","created_at":"2026-07-04T16:03:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9708072","created_at":"2026-07-04T16:03:10Z"},{"alias_kind":"pith_short_12","alias_value":"5ER7PLXDF2SU","created_at":"2026-07-04T16:03:10Z"},{"alias_kind":"pith_short_16","alias_value":"5ER7PLXDF2SU2ATR","created_at":"2026-07-04T16:03:10Z"},{"alias_kind":"pith_short_8","alias_value":"5ER7PLXD","created_at":"2026-07-04T16:03:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1997:5ER7PLXDF2SU2ATRTVU7G3YFHI","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9708072","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1997-08-07T21:17:23Z","cross_cats_sorted":[],"title_canon_sha256":"90dc3bdc6328cf30c95dd54ba75a5d842828d88ad19c4d6a04fd2dd7be2728f3","abstract_canon_sha256":"991c09d3f0164be1cac3a20e2194bd090cdd4982e31c502420147dca16bcd2e0"},"schema_version":"1.0"},"canonical_sha256":"e923f7aee32ea54d02719d69f36f053a27002b2e6294c46b23f84938971a7809","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:03:10.839174Z","signature_b64":"BUIc7HxQSUzTN/j6ODYnDqV+5nHfBfrybN60Hc4QH3UUCGcOAb4gBl5ufkZX8fh6LUBbnVjBItdwcE+zOp96Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e923f7aee32ea54d02719d69f36f053a27002b2e6294c46b23f84938971a7809","last_reissued_at":"2026-07-04T16:03:10.838770Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:03:10.838770Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9708072","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":"2026-07-04T16:03:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o1OQb5LXUa1CYIIunYdp4l7rDH6rRTPhVdAZc7T8YcMi7mbitlTjkf2+9oMUOnCARo/37PSNJfGSkZbLGEHqAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T06:32:45.442578Z"},"content_sha256":"66d4871a035d8d1e40de3896a89b44fa80e3f0f6ded591ea6dbd2b2befff8887","schema_version":"1.0","event_id":"sha256:66d4871a035d8d1e40de3896a89b44fa80e3f0f6ded591ea6dbd2b2befff8887"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1997:5ER7PLXDF2SU2ATRTVU7G3YFHI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Demography of Massive Dark Objects in Galaxy Centres","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Alan Dressler, Carl Grillmair, Douglas Richstone, Gary Bower, John Kormendy, John Magorrian, Karl Gebhardt, Ralf Bender, Richard Green, Scott Tremaine, S. M. Faber, Tod Lauer","submitted_at":"1997-08-07T21:17:23Z","abstract_excerpt":"We construct dynamical models for a sample of 36 nearby galaxies with Hubble Space Telescope photometry and ground-based kinematics. The models assume that each galaxy is axisymmetric, with a two-integral distribution function, arbitrary inclination angle, a position-independent stellar mass-to-light ratio Upsilon, and a central massive dark object (MDO) of arbitrary mass M_bh. They provide acceptable fits to 32 of the galaxies for some value of M_bh and Upsilon; the four galaxies that cannot be fit have kinematically decoupled cores. The mass-to-light ratios inferred for the 32 well-fit galax"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9708072","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/astro-ph/9708072/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":"2026-07-04T16:03:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7tWsQo5vZNFysoq/EIyxcMLrfmaQRkyFBCdFcLk24aCGLZ4cqt9ScYUyJ6nCpmGtCPXIFMvp8HhjngImOFStCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T06:32:45.442950Z"},"content_sha256":"e1cf4e683e10414f14b82fcdbe44f44738f1ccf2548b56e25ba57a78981f4ce7","schema_version":"1.0","event_id":"sha256:e1cf4e683e10414f14b82fcdbe44f44738f1ccf2548b56e25ba57a78981f4ce7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5ER7PLXDF2SU2ATRTVU7G3YFHI/bundle.json","state_url":"https://pith.science/pith/5ER7PLXDF2SU2ATRTVU7G3YFHI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5ER7PLXDF2SU2ATRTVU7G3YFHI/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":"2026-07-13T06:32:45Z","links":{"resolver":"https://pith.science/pith/5ER7PLXDF2SU2ATRTVU7G3YFHI","bundle":"https://pith.science/pith/5ER7PLXDF2SU2ATRTVU7G3YFHI/bundle.json","state":"https://pith.science/pith/5ER7PLXDF2SU2ATRTVU7G3YFHI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5ER7PLXDF2SU2ATRTVU7G3YFHI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:5ER7PLXDF2SU2ATRTVU7G3YFHI","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":"991c09d3f0164be1cac3a20e2194bd090cdd4982e31c502420147dca16bcd2e0","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-08-07T21:17:23Z","title_canon_sha256":"90dc3bdc6328cf30c95dd54ba75a5d842828d88ad19c4d6a04fd2dd7be2728f3"},"schema_version":"1.0","source":{"id":"astro-ph/9708072","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9708072","created_at":"2026-07-04T16:03:10Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9708072v1","created_at":"2026-07-04T16:03:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9708072","created_at":"2026-07-04T16:03:10Z"},{"alias_kind":"pith_short_12","alias_value":"5ER7PLXDF2SU","created_at":"2026-07-04T16:03:10Z"},{"alias_kind":"pith_short_16","alias_value":"5ER7PLXDF2SU2ATR","created_at":"2026-07-04T16:03:10Z"},{"alias_kind":"pith_short_8","alias_value":"5ER7PLXD","created_at":"2026-07-04T16:03:10Z"}],"graph_snapshots":[{"event_id":"sha256:e1cf4e683e10414f14b82fcdbe44f44738f1ccf2548b56e25ba57a78981f4ce7","target":"graph","created_at":"2026-07-04T16:03:10Z","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/astro-ph/9708072/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We construct dynamical models for a sample of 36 nearby galaxies with Hubble Space Telescope photometry and ground-based kinematics. The models assume that each galaxy is axisymmetric, with a two-integral distribution function, arbitrary inclination angle, a position-independent stellar mass-to-light ratio Upsilon, and a central massive dark object (MDO) of arbitrary mass M_bh. They provide acceptable fits to 32 of the galaxies for some value of M_bh and Upsilon; the four galaxies that cannot be fit have kinematically decoupled cores. The mass-to-light ratios inferred for the 32 well-fit galax","authors_text":"Alan Dressler, Carl Grillmair, Douglas Richstone, Gary Bower, John Kormendy, John Magorrian, Karl Gebhardt, Ralf Bender, Richard Green, Scott Tremaine, S. M. Faber, Tod Lauer","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1997-08-07T21:17:23Z","title":"The Demography of Massive Dark Objects in Galaxy Centres"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9708072","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":"sha256:66d4871a035d8d1e40de3896a89b44fa80e3f0f6ded591ea6dbd2b2befff8887","target":"record","created_at":"2026-07-04T16:03:10Z","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":"991c09d3f0164be1cac3a20e2194bd090cdd4982e31c502420147dca16bcd2e0","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-08-07T21:17:23Z","title_canon_sha256":"90dc3bdc6328cf30c95dd54ba75a5d842828d88ad19c4d6a04fd2dd7be2728f3"},"schema_version":"1.0","source":{"id":"astro-ph/9708072","kind":"arxiv","version":1}},"canonical_sha256":"e923f7aee32ea54d02719d69f36f053a27002b2e6294c46b23f84938971a7809","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e923f7aee32ea54d02719d69f36f053a27002b2e6294c46b23f84938971a7809","first_computed_at":"2026-07-04T16:03:10.838770Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:03:10.838770Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BUIc7HxQSUzTN/j6ODYnDqV+5nHfBfrybN60Hc4QH3UUCGcOAb4gBl5ufkZX8fh6LUBbnVjBItdwcE+zOp96Cg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:03:10.839174Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9708072","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:66d4871a035d8d1e40de3896a89b44fa80e3f0f6ded591ea6dbd2b2befff8887","sha256:e1cf4e683e10414f14b82fcdbe44f44738f1ccf2548b56e25ba57a78981f4ce7"],"state_sha256":"db94ea503cb3b6e988b599f2a5c394d9d3e8b73263dfcbd41d153b488d1cadbb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vNn7zdfylz0mOJHC2w1CefeDWo8yN0KZ3sOCQ5v5rF/eyXESScdoKBnjf2c9EwpaFZrPDpM7jJX6UE754e8mBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-13T06:32:45.445063Z","bundle_sha256":"7b652835fa97bb258ca50520037cd591969c35ff105a432beed0403684538aed"}}