{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:UMGWNPAP7DL6U2WYR6KOADYU2Q","short_pith_number":"pith:UMGWNPAP","canonical_record":{"source":{"id":"1510.07666","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-26T20:28:50Z","cross_cats_sorted":[],"title_canon_sha256":"2134560ab14024ee611b2e7026f5994f8c5c21f5ce1e8bb0901dfc43d8f0965f","abstract_canon_sha256":"31226bfe16f2a56a0268df1bc1cbf4f2ef7b4df24874b7b3f9becf1ab6e5a4f1"},"schema_version":"1.0"},"canonical_sha256":"a30d66bc0ff8d7ea6ad88f94e00f14d437040aa9d953381b05de68dd621958ca","source":{"kind":"arxiv","id":"1510.07666","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07666","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07666v1","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07666","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"pith_short_12","alias_value":"UMGWNPAP7DL6","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UMGWNPAP7DL6U2WY","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UMGWNPAP","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:UMGWNPAP7DL6U2WYR6KOADYU2Q","target":"record","payload":{"canonical_record":{"source":{"id":"1510.07666","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-26T20:28:50Z","cross_cats_sorted":[],"title_canon_sha256":"2134560ab14024ee611b2e7026f5994f8c5c21f5ce1e8bb0901dfc43d8f0965f","abstract_canon_sha256":"31226bfe16f2a56a0268df1bc1cbf4f2ef7b4df24874b7b3f9becf1ab6e5a4f1"},"schema_version":"1.0"},"canonical_sha256":"a30d66bc0ff8d7ea6ad88f94e00f14d437040aa9d953381b05de68dd621958ca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:23:54.820926Z","signature_b64":"KUldAzUvZ39AzJpDYWFc7uZQsLq+Ac9lUjAWmfo3MNIAfjG4auLx4GT7Q9gViS3JWlNySmhSx/SIZFpv1rJqBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a30d66bc0ff8d7ea6ad88f94e00f14d437040aa9d953381b05de68dd621958ca","last_reissued_at":"2026-05-18T01:23:54.820227Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:23:54.820227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.07666","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":"2026-05-18T01:23:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z6FSpj9YN88hDDNY4xOSwhUTykvKaUTjXclVupPG59MT0HILl8XRf1kbvzzMY7QKY57Az8tKsK48wGfBWNl0Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T00:31:42.034663Z"},"content_sha256":"ca8b3981fb3365258e63e46ff0af0484200daec7222495a0544369d589179edc","schema_version":"1.0","event_id":"sha256:ca8b3981fb3365258e63e46ff0af0484200daec7222495a0544369d589179edc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:UMGWNPAP7DL6U2WYR6KOADYU2Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The DiskMass Survey. X. Radio synthesis imaging of spiral galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"David R. Andersen, Kyle B. Westfall, Marc A. W. Verheijen, Matthew A. Bershady, Rob A. Swaters, Thomas P. K. Martinsson","submitted_at":"2015-10-26T20:28:50Z","abstract_excerpt":"We present results from 21 cm radio synthesis imaging of 28 spiral galaxies from the DiskMass Survey obtained with the VLA, WSRT, and GMRT facilities. We detail the observations and data reduction procedures and present a brief analysis of the radio data. We construct 21 cm continuum images, global HI emission-line profiles, column-density maps, velocity fields, and position-velocity diagrams. From these we determine star formation rates (SFRs), HI line widths, total HI masses, rotation curves, and azimuthally-averaged radial HI column-density profiles. All galaxies have an HI disk that extend"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07666","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":"2026-05-18T01:23:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HCdDjPUzOEpfMrSJZXAOtgui2gJVitfJgAyNi3XTwly33/ehcfxk0/t4mhjLDrs2WhRHl9YAbJsT/f4q93DhCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T00:31:42.035003Z"},"content_sha256":"4b5b4095b36d31ccd175fc1e391407ddaaaeb18dcee560800449de0570007b3f","schema_version":"1.0","event_id":"sha256:4b5b4095b36d31ccd175fc1e391407ddaaaeb18dcee560800449de0570007b3f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UMGWNPAP7DL6U2WYR6KOADYU2Q/bundle.json","state_url":"https://pith.science/pith/UMGWNPAP7DL6U2WYR6KOADYU2Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UMGWNPAP7DL6U2WYR6KOADYU2Q/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":"2026-06-02T00:31:42Z","links":{"resolver":"https://pith.science/pith/UMGWNPAP7DL6U2WYR6KOADYU2Q","bundle":"https://pith.science/pith/UMGWNPAP7DL6U2WYR6KOADYU2Q/bundle.json","state":"https://pith.science/pith/UMGWNPAP7DL6U2WYR6KOADYU2Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UMGWNPAP7DL6U2WYR6KOADYU2Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:UMGWNPAP7DL6U2WYR6KOADYU2Q","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":"31226bfe16f2a56a0268df1bc1cbf4f2ef7b4df24874b7b3f9becf1ab6e5a4f1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-26T20:28:50Z","title_canon_sha256":"2134560ab14024ee611b2e7026f5994f8c5c21f5ce1e8bb0901dfc43d8f0965f"},"schema_version":"1.0","source":{"id":"1510.07666","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07666","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07666v1","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07666","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"pith_short_12","alias_value":"UMGWNPAP7DL6","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UMGWNPAP7DL6U2WY","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UMGWNPAP","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:4b5b4095b36d31ccd175fc1e391407ddaaaeb18dcee560800449de0570007b3f","target":"graph","created_at":"2026-05-18T01:23:54Z","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 results from 21 cm radio synthesis imaging of 28 spiral galaxies from the DiskMass Survey obtained with the VLA, WSRT, and GMRT facilities. We detail the observations and data reduction procedures and present a brief analysis of the radio data. We construct 21 cm continuum images, global HI emission-line profiles, column-density maps, velocity fields, and position-velocity diagrams. From these we determine star formation rates (SFRs), HI line widths, total HI masses, rotation curves, and azimuthally-averaged radial HI column-density profiles. All galaxies have an HI disk that extend","authors_text":"David R. Andersen, Kyle B. Westfall, Marc A. W. Verheijen, Matthew A. Bershady, Rob A. Swaters, Thomas P. K. Martinsson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-26T20:28:50Z","title":"The DiskMass Survey. X. Radio synthesis imaging of spiral galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07666","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:ca8b3981fb3365258e63e46ff0af0484200daec7222495a0544369d589179edc","target":"record","created_at":"2026-05-18T01:23:54Z","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":"31226bfe16f2a56a0268df1bc1cbf4f2ef7b4df24874b7b3f9becf1ab6e5a4f1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-26T20:28:50Z","title_canon_sha256":"2134560ab14024ee611b2e7026f5994f8c5c21f5ce1e8bb0901dfc43d8f0965f"},"schema_version":"1.0","source":{"id":"1510.07666","kind":"arxiv","version":1}},"canonical_sha256":"a30d66bc0ff8d7ea6ad88f94e00f14d437040aa9d953381b05de68dd621958ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a30d66bc0ff8d7ea6ad88f94e00f14d437040aa9d953381b05de68dd621958ca","first_computed_at":"2026-05-18T01:23:54.820227Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:23:54.820227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KUldAzUvZ39AzJpDYWFc7uZQsLq+Ac9lUjAWmfo3MNIAfjG4auLx4GT7Q9gViS3JWlNySmhSx/SIZFpv1rJqBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:23:54.820926Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.07666","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ca8b3981fb3365258e63e46ff0af0484200daec7222495a0544369d589179edc","sha256:4b5b4095b36d31ccd175fc1e391407ddaaaeb18dcee560800449de0570007b3f"],"state_sha256":"e7f62ed988588b48cf807f7f6dc24c2cc0cf88572ceddb19a229cfe503d6edae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R6acx4NdDl9inQG5oyJHYmV8dDp6X/dS0PRDwr2Ev9VTm1gKbFtgs/OJPmnXVlZpssyDaGzCt/lbr+u3MMnFDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T00:31:42.037021Z","bundle_sha256":"eac2f9551841269d5a1f49ca877097d0b0097a7435a88acb00d993b976dcbf72"}}