{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:MUAHURJAMC7QWXMSADMQ3ACB2T","short_pith_number":"pith:MUAHURJA","canonical_record":{"source":{"id":"1804.08332","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-23T10:59:26Z","cross_cats_sorted":[],"title_canon_sha256":"c6b1f3116121bc43fb25ad67ba8855ce72a0e80cb8711f21ee604e8a81e3afa5","abstract_canon_sha256":"31d32242406205fd7604bd0536feb63a2324e34a0f5e6c4feee543e41d3f0af6"},"schema_version":"1.0"},"canonical_sha256":"65007a452060bf0b5d9200d90d8041d4d1cba9de1b07e0bf581c91832d12ffe3","source":{"kind":"arxiv","id":"1804.08332","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.08332","created_at":"2026-05-18T00:17:48Z"},{"alias_kind":"arxiv_version","alias_value":"1804.08332v1","created_at":"2026-05-18T00:17:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.08332","created_at":"2026-05-18T00:17:48Z"},{"alias_kind":"pith_short_12","alias_value":"MUAHURJAMC7Q","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MUAHURJAMC7QWXMS","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MUAHURJA","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:MUAHURJAMC7QWXMSADMQ3ACB2T","target":"record","payload":{"canonical_record":{"source":{"id":"1804.08332","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-23T10:59:26Z","cross_cats_sorted":[],"title_canon_sha256":"c6b1f3116121bc43fb25ad67ba8855ce72a0e80cb8711f21ee604e8a81e3afa5","abstract_canon_sha256":"31d32242406205fd7604bd0536feb63a2324e34a0f5e6c4feee543e41d3f0af6"},"schema_version":"1.0"},"canonical_sha256":"65007a452060bf0b5d9200d90d8041d4d1cba9de1b07e0bf581c91832d12ffe3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:17:48.749746Z","signature_b64":"OXk3t21d8dvNizv4kFKxui+9nR/CRQauNNZmUHj2aw/20KQ91wXem+2fmeqo0ArdMI1OW6nE8xuHp+xc1ie6DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65007a452060bf0b5d9200d90d8041d4d1cba9de1b07e0bf581c91832d12ffe3","last_reissued_at":"2026-05-18T00:17:48.749043Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:17:48.749043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.08332","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":"2026-05-18T00:17:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AfZtIobWEmDP8MqPMPTcO4M4PSDikgbYccHe5N75biekxLPYopTMgTwRW0zXSCHEmJUrhww2kab2rVBfFss4Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T19:42:08.682610Z"},"content_sha256":"9cf4ca68d59b82468549c0e170cd90343af9f14804d9f4b72ad93953f5a8d53d","schema_version":"1.0","event_id":"sha256:9cf4ca68d59b82468549c0e170cd90343af9f14804d9f4b72ad93953f5a8d53d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:MUAHURJAMC7QWXMSADMQ3ACB2T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Automated detection of very Low Surface Brightness galaxies in the Virgo Cluster","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Daniel J. Prole, Jonathan I. Davies, Luke J. M. Davies, Olivia C. Keenan","submitted_at":"2018-04-23T10:59:26Z","abstract_excerpt":"We report the automatic detection of a new sample of very low surface brightness (LSB) galaxies, likely members of the Virgo cluster. We introduce our new software, {\\tt DeepScan}, that has been designed specifically to detect extended LSB features automatically using the DBSCAN algorithm. We demonstrate the technique by applying it over a 5 degree$^2$ portion of the Next-Generation Virgo Survey (NGVS) data to reveal 53 low surface brightness galaxies that are candidate cluster members based on their sizes and colours. 30 of these sources are new detections despite the region being searched sp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.08332","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":"2026-05-18T00:17:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7NrIOBKtf68E0f9vp+D5iH6FKYaHPuDMGGw9EPGpqeFAWQH7UpXiz7ufAgwl15shXES7H7WBHJeHcJCmQS6EBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T19:42:08.683288Z"},"content_sha256":"6ca96fc21d9c256e917fb1aa8bb0b3ebe2a90908d431ce9fa00679fdd8a4dfde","schema_version":"1.0","event_id":"sha256:6ca96fc21d9c256e917fb1aa8bb0b3ebe2a90908d431ce9fa00679fdd8a4dfde"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MUAHURJAMC7QWXMSADMQ3ACB2T/bundle.json","state_url":"https://pith.science/pith/MUAHURJAMC7QWXMSADMQ3ACB2T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MUAHURJAMC7QWXMSADMQ3ACB2T/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":"2026-05-26T19:42:08Z","links":{"resolver":"https://pith.science/pith/MUAHURJAMC7QWXMSADMQ3ACB2T","bundle":"https://pith.science/pith/MUAHURJAMC7QWXMSADMQ3ACB2T/bundle.json","state":"https://pith.science/pith/MUAHURJAMC7QWXMSADMQ3ACB2T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MUAHURJAMC7QWXMSADMQ3ACB2T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MUAHURJAMC7QWXMSADMQ3ACB2T","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":"31d32242406205fd7604bd0536feb63a2324e34a0f5e6c4feee543e41d3f0af6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-23T10:59:26Z","title_canon_sha256":"c6b1f3116121bc43fb25ad67ba8855ce72a0e80cb8711f21ee604e8a81e3afa5"},"schema_version":"1.0","source":{"id":"1804.08332","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.08332","created_at":"2026-05-18T00:17:48Z"},{"alias_kind":"arxiv_version","alias_value":"1804.08332v1","created_at":"2026-05-18T00:17:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.08332","created_at":"2026-05-18T00:17:48Z"},{"alias_kind":"pith_short_12","alias_value":"MUAHURJAMC7Q","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MUAHURJAMC7QWXMS","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MUAHURJA","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:6ca96fc21d9c256e917fb1aa8bb0b3ebe2a90908d431ce9fa00679fdd8a4dfde","target":"graph","created_at":"2026-05-18T00:17:48Z","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 report the automatic detection of a new sample of very low surface brightness (LSB) galaxies, likely members of the Virgo cluster. We introduce our new software, {\\tt DeepScan}, that has been designed specifically to detect extended LSB features automatically using the DBSCAN algorithm. We demonstrate the technique by applying it over a 5 degree$^2$ portion of the Next-Generation Virgo Survey (NGVS) data to reveal 53 low surface brightness galaxies that are candidate cluster members based on their sizes and colours. 30 of these sources are new detections despite the region being searched sp","authors_text":"Daniel J. Prole, Jonathan I. Davies, Luke J. M. Davies, Olivia C. Keenan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-23T10:59:26Z","title":"Automated detection of very Low Surface Brightness galaxies in the Virgo Cluster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.08332","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":"sha256:9cf4ca68d59b82468549c0e170cd90343af9f14804d9f4b72ad93953f5a8d53d","target":"record","created_at":"2026-05-18T00:17:48Z","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":"31d32242406205fd7604bd0536feb63a2324e34a0f5e6c4feee543e41d3f0af6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-23T10:59:26Z","title_canon_sha256":"c6b1f3116121bc43fb25ad67ba8855ce72a0e80cb8711f21ee604e8a81e3afa5"},"schema_version":"1.0","source":{"id":"1804.08332","kind":"arxiv","version":1}},"canonical_sha256":"65007a452060bf0b5d9200d90d8041d4d1cba9de1b07e0bf581c91832d12ffe3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65007a452060bf0b5d9200d90d8041d4d1cba9de1b07e0bf581c91832d12ffe3","first_computed_at":"2026-05-18T00:17:48.749043Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:17:48.749043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OXk3t21d8dvNizv4kFKxui+9nR/CRQauNNZmUHj2aw/20KQ91wXem+2fmeqo0ArdMI1OW6nE8xuHp+xc1ie6DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:17:48.749746Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.08332","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9cf4ca68d59b82468549c0e170cd90343af9f14804d9f4b72ad93953f5a8d53d","sha256:6ca96fc21d9c256e917fb1aa8bb0b3ebe2a90908d431ce9fa00679fdd8a4dfde"],"state_sha256":"66a5ce9f3fc360f0ac67d316f179fa1d71c2664a667c10baa12e0ba6a8826020"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2aae8o6Ui6Vkj9AXq0EGPBRkZrD2Qq1sAM0fqTVOjNuZ0jJ3DmEEQP2bkMvaf7352Bpas1xNHciNbwPhPW2eCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T19:42:08.687559Z","bundle_sha256":"0387b097ec9929d5ce35cd5b7e6bd4277c41741e28f0147e212730e6615066fd"}}