{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:RCKUYKQBBWQG6D5J7X3U7RTZJN","short_pith_number":"pith:RCKUYKQB","canonical_record":{"source":{"id":"astro-ph/0506750","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-06-30T08:59:14Z","cross_cats_sorted":[],"title_canon_sha256":"fe3eb3b5508ec4fa3d58b28d8c44f2c6174882fe8a15c1b552550b55efa6eec8","abstract_canon_sha256":"454224a8a75d618786ae16d7aaad62559c97a7370bf7e26deb02140e6ea13d68"},"schema_version":"1.0"},"canonical_sha256":"88954c2a010da06f0fa9fdf74fc6794b42fe53a7da653260e1b8481a2f831eb6","source":{"kind":"arxiv","id":"astro-ph/0506750","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0506750","created_at":"2026-07-04T17:25:15Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0506750v2","created_at":"2026-07-04T17:25:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0506750","created_at":"2026-07-04T17:25:15Z"},{"alias_kind":"pith_short_12","alias_value":"RCKUYKQBBWQG","created_at":"2026-07-04T17:25:15Z"},{"alias_kind":"pith_short_16","alias_value":"RCKUYKQBBWQG6D5J","created_at":"2026-07-04T17:25:15Z"},{"alias_kind":"pith_short_8","alias_value":"RCKUYKQB","created_at":"2026-07-04T17:25:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:RCKUYKQBBWQG6D5J7X3U7RTZJN","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0506750","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-06-30T08:59:14Z","cross_cats_sorted":[],"title_canon_sha256":"fe3eb3b5508ec4fa3d58b28d8c44f2c6174882fe8a15c1b552550b55efa6eec8","abstract_canon_sha256":"454224a8a75d618786ae16d7aaad62559c97a7370bf7e26deb02140e6ea13d68"},"schema_version":"1.0"},"canonical_sha256":"88954c2a010da06f0fa9fdf74fc6794b42fe53a7da653260e1b8481a2f831eb6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:25:15.306308Z","signature_b64":"S5kWeBthmdph4SyBkYNsihrmZFsGNTWNVFNXjaMby4bwBE6vFeGEmpdL++kpcQv/yTyor2osgXLR9Helh0YYAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"88954c2a010da06f0fa9fdf74fc6794b42fe53a7da653260e1b8481a2f831eb6","last_reissued_at":"2026-07-04T17:25:15.305796Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:25:15.305796Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0506750","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:25:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ppl2Ah51UAJLB7sfuSDQbfKRSNcNQaHxxT+GTg9y8gRqZ0WGpqEtikQNkBaSbUCMMQPjOWFtWSjA4U8K9W8cBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T19:39:59.643230Z"},"content_sha256":"b4e93a4d25264ac686bb6b70cbf69a258bf53602b2da54c3a39b68fa4e263100","schema_version":"1.0","event_id":"sha256:b4e93a4d25264ac686bb6b70cbf69a258bf53602b2da54c3a39b68fa4e263100"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:RCKUYKQBBWQG6D5J7X3U7RTZJN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Baryonic Tully-Fisher Relation of Galaxies with Extended Rotation Curves and the Stellar Mass of Rotating Galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Stacy S. McGaugh (U. Maryland)","submitted_at":"2005-06-30T08:59:14Z","abstract_excerpt":"I investigate the Baryonic Tully-Fisher relation for a sample of galaxies with extended 21 cm rotation curves spanning the range 20 < Vf < 300 km/s. A variety of scalings of the stellar mass-to-light ratio are considered. For each prescription for M/L, I give fits of the form Md = A Vf^x. Presumably, the prescription that comes closest to the correct value will minimize the scatter in the relation. The fit with minimum scatter has A = 50 solar masses/(km/s)^4 and x = 4. This relation holds over five decades in mass. Galaxy color, stellar fraction, and M/L are correlated with each other and wit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0506750","kind":"arxiv","version":2},"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/0506750/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":"2026-07-04T17:25:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zul7K2bMUVEG+gPRuY1hjzDItv4ODBuhGTzRJRVIe5hVF4vhU6vo9AV8GFfi4XSGWc3/vMU7/t8GBM1i3jTpBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T19:39:59.644168Z"},"content_sha256":"f7f2793ab6a257b2cebb96f2ce04f65aad08cebaee7af5c67576992f0c6df60c","schema_version":"1.0","event_id":"sha256:f7f2793ab6a257b2cebb96f2ce04f65aad08cebaee7af5c67576992f0c6df60c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RCKUYKQBBWQG6D5J7X3U7RTZJN/bundle.json","state_url":"https://pith.science/pith/RCKUYKQBBWQG6D5J7X3U7RTZJN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RCKUYKQBBWQG6D5J7X3U7RTZJN/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":"2026-08-18T19:39:59Z","links":{"resolver":"https://pith.science/pith/RCKUYKQBBWQG6D5J7X3U7RTZJN","bundle":"https://pith.science/pith/RCKUYKQBBWQG6D5J7X3U7RTZJN/bundle.json","state":"https://pith.science/pith/RCKUYKQBBWQG6D5J7X3U7RTZJN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RCKUYKQBBWQG6D5J7X3U7RTZJN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:RCKUYKQBBWQG6D5J7X3U7RTZJN","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":"454224a8a75d618786ae16d7aaad62559c97a7370bf7e26deb02140e6ea13d68","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-06-30T08:59:14Z","title_canon_sha256":"fe3eb3b5508ec4fa3d58b28d8c44f2c6174882fe8a15c1b552550b55efa6eec8"},"schema_version":"1.0","source":{"id":"astro-ph/0506750","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0506750","created_at":"2026-07-04T17:25:15Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0506750v2","created_at":"2026-07-04T17:25:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0506750","created_at":"2026-07-04T17:25:15Z"},{"alias_kind":"pith_short_12","alias_value":"RCKUYKQBBWQG","created_at":"2026-07-04T17:25:15Z"},{"alias_kind":"pith_short_16","alias_value":"RCKUYKQBBWQG6D5J","created_at":"2026-07-04T17:25:15Z"},{"alias_kind":"pith_short_8","alias_value":"RCKUYKQB","created_at":"2026-07-04T17:25:15Z"}],"graph_snapshots":[{"event_id":"sha256:f7f2793ab6a257b2cebb96f2ce04f65aad08cebaee7af5c67576992f0c6df60c","target":"graph","created_at":"2026-07-04T17:25:15Z","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/0506750/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"I investigate the Baryonic Tully-Fisher relation for a sample of galaxies with extended 21 cm rotation curves spanning the range 20 < Vf < 300 km/s. A variety of scalings of the stellar mass-to-light ratio are considered. For each prescription for M/L, I give fits of the form Md = A Vf^x. Presumably, the prescription that comes closest to the correct value will minimize the scatter in the relation. The fit with minimum scatter has A = 50 solar masses/(km/s)^4 and x = 4. This relation holds over five decades in mass. Galaxy color, stellar fraction, and M/L are correlated with each other and wit","authors_text":"Stacy S. McGaugh (U. Maryland)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-06-30T08:59:14Z","title":"The Baryonic Tully-Fisher Relation of Galaxies with Extended Rotation Curves and the Stellar Mass of Rotating Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0506750","kind":"arxiv","version":2},"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:b4e93a4d25264ac686bb6b70cbf69a258bf53602b2da54c3a39b68fa4e263100","target":"record","created_at":"2026-07-04T17:25:15Z","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":"454224a8a75d618786ae16d7aaad62559c97a7370bf7e26deb02140e6ea13d68","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-06-30T08:59:14Z","title_canon_sha256":"fe3eb3b5508ec4fa3d58b28d8c44f2c6174882fe8a15c1b552550b55efa6eec8"},"schema_version":"1.0","source":{"id":"astro-ph/0506750","kind":"arxiv","version":2}},"canonical_sha256":"88954c2a010da06f0fa9fdf74fc6794b42fe53a7da653260e1b8481a2f831eb6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"88954c2a010da06f0fa9fdf74fc6794b42fe53a7da653260e1b8481a2f831eb6","first_computed_at":"2026-07-04T17:25:15.305796Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:25:15.305796Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"S5kWeBthmdph4SyBkYNsihrmZFsGNTWNVFNXjaMby4bwBE6vFeGEmpdL++kpcQv/yTyor2osgXLR9Helh0YYAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:25:15.306308Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0506750","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b4e93a4d25264ac686bb6b70cbf69a258bf53602b2da54c3a39b68fa4e263100","sha256:f7f2793ab6a257b2cebb96f2ce04f65aad08cebaee7af5c67576992f0c6df60c"],"state_sha256":"733ceda9b661e0b79ca7b34530e8c4d295e4ec5239bbfa7dbf8b65a8742eff25"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hiOn5dFkfag66cHzTflB2AQ7IBqpsl4Am4BvvggViWnoLqBZaVqvST6aNiKBxdBLpc/vnbHzgnBoDhgdHkmcDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T19:39:59.650786Z","bundle_sha256":"e29d69ad1f0a576c2bbe53014907e9e964a5b99786fbe0df51299cc49013c2e3"}}