{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:VEZIECWJTKGJVUQRS64ODRAUYV","short_pith_number":"pith:VEZIECWJ","canonical_record":{"source":{"id":"astro-ph/0203188","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-12T21:27:09Z","cross_cats_sorted":[],"title_canon_sha256":"3361ee4d0db34920495c373807474fc26ba9d40430efbc58af79fdbc4239d4ed","abstract_canon_sha256":"1453f1e877107d798d77ae648154ebb6a98b3221e3e8ea55bfbef90401c455d1"},"schema_version":"1.0"},"canonical_sha256":"a932820ac99a8c9ad21197b8e1c414c5614435bdcefec80048c7d91a2ce17e6e","source":{"kind":"arxiv","id":"astro-ph/0203188","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0203188","created_at":"2026-05-18T03:47:51Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0203188v1","created_at":"2026-05-18T03:47:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0203188","created_at":"2026-05-18T03:47:51Z"},{"alias_kind":"pith_short_12","alias_value":"VEZIECWJTKGJ","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"VEZIECWJTKGJVUQR","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"VEZIECWJ","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:VEZIECWJTKGJVUQRS64ODRAUYV","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0203188","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-12T21:27:09Z","cross_cats_sorted":[],"title_canon_sha256":"3361ee4d0db34920495c373807474fc26ba9d40430efbc58af79fdbc4239d4ed","abstract_canon_sha256":"1453f1e877107d798d77ae648154ebb6a98b3221e3e8ea55bfbef90401c455d1"},"schema_version":"1.0"},"canonical_sha256":"a932820ac99a8c9ad21197b8e1c414c5614435bdcefec80048c7d91a2ce17e6e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:47:51.719842Z","signature_b64":"aH1T5s59jeVe75x1i493OLKhyORtcxZ1ewag4lyVMSF8PiL7+KHtWPS3LXqxa3JsBCCHFh4PPkGSK50bQ/eRDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a932820ac99a8c9ad21197b8e1c414c5614435bdcefec80048c7d91a2ce17e6e","last_reissued_at":"2026-05-18T03:47:51.719278Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:47:51.719278Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0203188","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":"2026-05-18T03:47:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"adkW/vmBSaIIPeN37s+W8V+k1OuhZrqnocDOAUsPTipWlYtasRyctmc5gu9kfp3sFjhesdPiKeKZaeelsswCAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T21:26:22.906532Z"},"content_sha256":"4bf8f50fcc910d0071c7c468667c22121904646635d00114f5316b6bff56549d","schema_version":"1.0","event_id":"sha256:4bf8f50fcc910d0071c7c468667c22121904646635d00114f5316b6bff56549d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:VEZIECWJTKGJVUQRS64ODRAUYV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-Resolution Optical Rotation Curves of Low-Luminosity Spiral Galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) University of Wisconsin-Madison), III (2) ((1) Harvard-Smithsonian Center for Astrophysics, J. S. Gallagher, L. D. Matthews (1)","submitted_at":"2002-03-12T21:27:09Z","abstract_excerpt":"We present optical longslit spectroscopic observations of 21 low-luminosity, extreme late-type spiral galaxies. Our sample is comprised of Sc-Sm Local Supercluster spirals with moderate-to-low optical surface brightnesses and with luminosities at the low end for spiral disk galaxies (M_V>-18.8). For each galaxy we have measured high spatial resolution position-velocity (P-V) curves using the H alpha emission line, and for 15 of the galaxies we also derive major axis rotation curves. In ~50% of our sample, the P-V curves show significant asymmetries in shape, extent, and/or amplitude on the app"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0203188","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":"2026-05-18T03:47:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CbJvsacBnDAMlO9dVDpKFYd42i+i91GQfhhcbSXLe05jxhpVQINYUddoywVRh3lzvhSMvgviBzNXifREuNbjAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T21:26:22.906878Z"},"content_sha256":"525fc5a2aeb7de3cb6a772e6488fd2e70ab2ea9ce8fe78d0af2cf703340647e9","schema_version":"1.0","event_id":"sha256:525fc5a2aeb7de3cb6a772e6488fd2e70ab2ea9ce8fe78d0af2cf703340647e9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VEZIECWJTKGJVUQRS64ODRAUYV/bundle.json","state_url":"https://pith.science/pith/VEZIECWJTKGJVUQRS64ODRAUYV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VEZIECWJTKGJVUQRS64ODRAUYV/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":"2026-06-27T21:26:22Z","links":{"resolver":"https://pith.science/pith/VEZIECWJTKGJVUQRS64ODRAUYV","bundle":"https://pith.science/pith/VEZIECWJTKGJVUQRS64ODRAUYV/bundle.json","state":"https://pith.science/pith/VEZIECWJTKGJVUQRS64ODRAUYV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VEZIECWJTKGJVUQRS64ODRAUYV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:VEZIECWJTKGJVUQRS64ODRAUYV","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":"1453f1e877107d798d77ae648154ebb6a98b3221e3e8ea55bfbef90401c455d1","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-12T21:27:09Z","title_canon_sha256":"3361ee4d0db34920495c373807474fc26ba9d40430efbc58af79fdbc4239d4ed"},"schema_version":"1.0","source":{"id":"astro-ph/0203188","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0203188","created_at":"2026-05-18T03:47:51Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0203188v1","created_at":"2026-05-18T03:47:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0203188","created_at":"2026-05-18T03:47:51Z"},{"alias_kind":"pith_short_12","alias_value":"VEZIECWJTKGJ","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"VEZIECWJTKGJVUQR","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"VEZIECWJ","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:525fc5a2aeb7de3cb6a772e6488fd2e70ab2ea9ce8fe78d0af2cf703340647e9","target":"graph","created_at":"2026-05-18T03:47:51Z","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":"We present optical longslit spectroscopic observations of 21 low-luminosity, extreme late-type spiral galaxies. Our sample is comprised of Sc-Sm Local Supercluster spirals with moderate-to-low optical surface brightnesses and with luminosities at the low end for spiral disk galaxies (M_V>-18.8). For each galaxy we have measured high spatial resolution position-velocity (P-V) curves using the H alpha emission line, and for 15 of the galaxies we also derive major axis rotation curves. In ~50% of our sample, the P-V curves show significant asymmetries in shape, extent, and/or amplitude on the app","authors_text":"(2) University of Wisconsin-Madison), III (2) ((1) Harvard-Smithsonian Center for Astrophysics, J. S. Gallagher, L. D. Matthews (1)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-03-12T21:27:09Z","title":"High-Resolution Optical Rotation Curves of Low-Luminosity Spiral Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0203188","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":"sha256:4bf8f50fcc910d0071c7c468667c22121904646635d00114f5316b6bff56549d","target":"record","created_at":"2026-05-18T03:47:51Z","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":"1453f1e877107d798d77ae648154ebb6a98b3221e3e8ea55bfbef90401c455d1","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-12T21:27:09Z","title_canon_sha256":"3361ee4d0db34920495c373807474fc26ba9d40430efbc58af79fdbc4239d4ed"},"schema_version":"1.0","source":{"id":"astro-ph/0203188","kind":"arxiv","version":1}},"canonical_sha256":"a932820ac99a8c9ad21197b8e1c414c5614435bdcefec80048c7d91a2ce17e6e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a932820ac99a8c9ad21197b8e1c414c5614435bdcefec80048c7d91a2ce17e6e","first_computed_at":"2026-05-18T03:47:51.719278Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:47:51.719278Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aH1T5s59jeVe75x1i493OLKhyORtcxZ1ewag4lyVMSF8PiL7+KHtWPS3LXqxa3JsBCCHFh4PPkGSK50bQ/eRDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:47:51.719842Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0203188","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4bf8f50fcc910d0071c7c468667c22121904646635d00114f5316b6bff56549d","sha256:525fc5a2aeb7de3cb6a772e6488fd2e70ab2ea9ce8fe78d0af2cf703340647e9"],"state_sha256":"8eeeee0ec1becedbd4473abbbe0aa855cd78661fac4d7b2c395452a72ccf7ac7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VF8I5IN+7alxmtgr/o321z5exKKe6FLg0eG39YaTJ62c75EGqNKlu5LpK3/k81i4tx9WTJ2eABcv4H1yeuU5Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T21:26:22.908891Z","bundle_sha256":"d6775ba364102a61967ce2b1f6b15f60dd2d55b610e9aaccdce13f5a0a9c3566"}}