{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:YKPCR7JE2GUJSDAP7ZT5LGPTXL","short_pith_number":"pith:YKPCR7JE","canonical_record":{"source":{"id":"1008.5107","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-08-30T16:16:58Z","cross_cats_sorted":[],"title_canon_sha256":"d28626f3cd157be67fd6732acb56832b901c66d3d9cd399e32dfc66ade88b409","abstract_canon_sha256":"9240457e1a3b04d4a1d915108706486adb59224891d9f8461d041fad93bef7f4"},"schema_version":"1.0"},"canonical_sha256":"c29e28fd24d1a8990c0ffe67d599f3bade2920df1919d66a6ca11fc3e558d4fe","source":{"kind":"arxiv","id":"1008.5107","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.5107","created_at":"2026-05-18T02:05:41Z"},{"alias_kind":"arxiv_version","alias_value":"1008.5107v1","created_at":"2026-05-18T02:05:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.5107","created_at":"2026-05-18T02:05:41Z"},{"alias_kind":"pith_short_12","alias_value":"YKPCR7JE2GUJ","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"YKPCR7JE2GUJSDAP","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"YKPCR7JE","created_at":"2026-05-18T12:26:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:YKPCR7JE2GUJSDAP7ZT5LGPTXL","target":"record","payload":{"canonical_record":{"source":{"id":"1008.5107","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-08-30T16:16:58Z","cross_cats_sorted":[],"title_canon_sha256":"d28626f3cd157be67fd6732acb56832b901c66d3d9cd399e32dfc66ade88b409","abstract_canon_sha256":"9240457e1a3b04d4a1d915108706486adb59224891d9f8461d041fad93bef7f4"},"schema_version":"1.0"},"canonical_sha256":"c29e28fd24d1a8990c0ffe67d599f3bade2920df1919d66a6ca11fc3e558d4fe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:41.356650Z","signature_b64":"icrdCu6QJNbKtxX5Yz67j92TnONhHRl1BjTirI8YU2FIstC+ehuMF0YO/UgmzZap24OcisNcWDkgAQ2E9zRfAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c29e28fd24d1a8990c0ffe67d599f3bade2920df1919d66a6ca11fc3e558d4fe","last_reissued_at":"2026-05-18T02:05:41.355882Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:41.355882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.5107","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":"2026-05-18T02:05:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VNlb4K3vfx1pHGd9bi+50Z4cH3bb9IkgH9VPTyiRZLjlxvmy2NSYiQHgkLFzHB8QbJrXZ6KSVGM/8CHjHaCkAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:03:53.299195Z"},"content_sha256":"c68bcf278dff20241be59169fa538061b426dd4258dda84fb76ba71783a799c2","schema_version":"1.0","event_id":"sha256:c68bcf278dff20241be59169fa538061b426dd4258dda84fb76ba71783a799c2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:YKPCR7JE2GUJSDAP7ZT5LGPTXL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Arecibo Legacy Fast ALFA Survey: X. The HI Mass Function and Omega_HI From the 40% ALFALFA Survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Ann M. Martin, Christopher M. Springob, Emmanouil Papastergis, Martha P. Haynes, Riccardo Giovanelli, Sabrina Stierwalt","submitted_at":"2010-08-30T16:16:58Z","abstract_excerpt":"The Arecibo Legacy Fast ALFA (ALFALFA) survey has completed source extraction for 40% of its total sky area, resulting in the largest sample of HI-selected galaxies to date. We measure the HI mass function from a sample of 10,119 galaxies with 6.2 < log (M_HI/M_Sun) < 11.0 and with well-described mass errors that accurately reflect our knowledge of low-mass systems. We characterize the survey sensitivity and its dependence on profile velocity width, the effect of large-scale structure, and the impact of radio frequency interference in order to calculate the HIMF with both the 1/Vmax and 2DSWML"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.5107","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":"2026-05-18T02:05:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ITfxng0CEXzBCSvZMJntWOwE6OEkXbYUzXnX65+Fg9DEJNu8bqvu0xApafVxC44hEEqT1Ha1T2ubXE00iMpGAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:03:53.299886Z"},"content_sha256":"0100a5d9250aa1b2927cda23974cc0381666e90f701670ffb56c5dbf78f67efa","schema_version":"1.0","event_id":"sha256:0100a5d9250aa1b2927cda23974cc0381666e90f701670ffb56c5dbf78f67efa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YKPCR7JE2GUJSDAP7ZT5LGPTXL/bundle.json","state_url":"https://pith.science/pith/YKPCR7JE2GUJSDAP7ZT5LGPTXL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YKPCR7JE2GUJSDAP7ZT5LGPTXL/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":"2026-05-26T00:03:53Z","links":{"resolver":"https://pith.science/pith/YKPCR7JE2GUJSDAP7ZT5LGPTXL","bundle":"https://pith.science/pith/YKPCR7JE2GUJSDAP7ZT5LGPTXL/bundle.json","state":"https://pith.science/pith/YKPCR7JE2GUJSDAP7ZT5LGPTXL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YKPCR7JE2GUJSDAP7ZT5LGPTXL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:YKPCR7JE2GUJSDAP7ZT5LGPTXL","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":"9240457e1a3b04d4a1d915108706486adb59224891d9f8461d041fad93bef7f4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-08-30T16:16:58Z","title_canon_sha256":"d28626f3cd157be67fd6732acb56832b901c66d3d9cd399e32dfc66ade88b409"},"schema_version":"1.0","source":{"id":"1008.5107","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.5107","created_at":"2026-05-18T02:05:41Z"},{"alias_kind":"arxiv_version","alias_value":"1008.5107v1","created_at":"2026-05-18T02:05:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.5107","created_at":"2026-05-18T02:05:41Z"},{"alias_kind":"pith_short_12","alias_value":"YKPCR7JE2GUJ","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"YKPCR7JE2GUJSDAP","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"YKPCR7JE","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:0100a5d9250aa1b2927cda23974cc0381666e90f701670ffb56c5dbf78f67efa","target":"graph","created_at":"2026-05-18T02:05:41Z","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":"The Arecibo Legacy Fast ALFA (ALFALFA) survey has completed source extraction for 40% of its total sky area, resulting in the largest sample of HI-selected galaxies to date. We measure the HI mass function from a sample of 10,119 galaxies with 6.2 < log (M_HI/M_Sun) < 11.0 and with well-described mass errors that accurately reflect our knowledge of low-mass systems. We characterize the survey sensitivity and its dependence on profile velocity width, the effect of large-scale structure, and the impact of radio frequency interference in order to calculate the HIMF with both the 1/Vmax and 2DSWML","authors_text":"Ann M. Martin, Christopher M. Springob, Emmanouil Papastergis, Martha P. Haynes, Riccardo Giovanelli, Sabrina Stierwalt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-08-30T16:16:58Z","title":"The Arecibo Legacy Fast ALFA Survey: X. The HI Mass Function and Omega_HI From the 40% ALFALFA Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.5107","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:c68bcf278dff20241be59169fa538061b426dd4258dda84fb76ba71783a799c2","target":"record","created_at":"2026-05-18T02:05:41Z","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":"9240457e1a3b04d4a1d915108706486adb59224891d9f8461d041fad93bef7f4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-08-30T16:16:58Z","title_canon_sha256":"d28626f3cd157be67fd6732acb56832b901c66d3d9cd399e32dfc66ade88b409"},"schema_version":"1.0","source":{"id":"1008.5107","kind":"arxiv","version":1}},"canonical_sha256":"c29e28fd24d1a8990c0ffe67d599f3bade2920df1919d66a6ca11fc3e558d4fe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c29e28fd24d1a8990c0ffe67d599f3bade2920df1919d66a6ca11fc3e558d4fe","first_computed_at":"2026-05-18T02:05:41.355882Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:41.355882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"icrdCu6QJNbKtxX5Yz67j92TnONhHRl1BjTirI8YU2FIstC+ehuMF0YO/UgmzZap24OcisNcWDkgAQ2E9zRfAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:41.356650Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.5107","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c68bcf278dff20241be59169fa538061b426dd4258dda84fb76ba71783a799c2","sha256:0100a5d9250aa1b2927cda23974cc0381666e90f701670ffb56c5dbf78f67efa"],"state_sha256":"b6d2da9bc0f675b84e722f71b732229297f438751e957af914dbb5544d28af0e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0E7sB9PoIarCjnan1oPo27ie8p4Tsokqj2I1u1X1wn8Ipdc4BIbdlsdiynMQwA6IFAbh9qPMeDAnvurR5zjpBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T00:03:53.303023Z","bundle_sha256":"8480dca1099ad125efbe9c9c57b65e4918058b71a7f24f586c404c6f338b69e6"}}