{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:4MB6WG4PMDY7ZPOAGOVNOJDYPX","short_pith_number":"pith:4MB6WG4P","canonical_record":{"source":{"id":"1602.05836","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-02-18T15:23:41Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"bf138d68fc8893ef7c9db0c8fe49234660822f54c06ff0279ab7784e8ad1b53b","abstract_canon_sha256":"be15d39f6064754b69fea715718bbeee51d530acaf6a31fe85e59b6d03b51b0b"},"schema_version":"1.0"},"canonical_sha256":"e303eb1b8f60f1fcbdc033aad724787df96196702bb3de6b01a7849d05c1b34c","source":{"kind":"arxiv","id":"1602.05836","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.05836","created_at":"2026-05-18T01:18:56Z"},{"alias_kind":"arxiv_version","alias_value":"1602.05836v2","created_at":"2026-05-18T01:18:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.05836","created_at":"2026-05-18T01:18:56Z"},{"alias_kind":"pith_short_12","alias_value":"4MB6WG4PMDY7","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4MB6WG4PMDY7ZPOA","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4MB6WG4P","created_at":"2026-05-18T12:29:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:4MB6WG4PMDY7ZPOAGOVNOJDYPX","target":"record","payload":{"canonical_record":{"source":{"id":"1602.05836","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-02-18T15:23:41Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"bf138d68fc8893ef7c9db0c8fe49234660822f54c06ff0279ab7784e8ad1b53b","abstract_canon_sha256":"be15d39f6064754b69fea715718bbeee51d530acaf6a31fe85e59b6d03b51b0b"},"schema_version":"1.0"},"canonical_sha256":"e303eb1b8f60f1fcbdc033aad724787df96196702bb3de6b01a7849d05c1b34c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:56.962985Z","signature_b64":"XbfRHRLEFMucK/eZ71w6gcwf+NxSvb/NM/rATMEC+fn3lzI0SaI6Fk88InAOSQ2m6h7O9OyHOjlelQ8NdF5gCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e303eb1b8f60f1fcbdc033aad724787df96196702bb3de6b01a7849d05c1b34c","last_reissued_at":"2026-05-18T01:18:56.962585Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:56.962585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.05836","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":"2026-05-18T01:18:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7LviTdGyy3we5Acw5rFdoancVrkJrc0QNS6uQClNGkYJqQqHUT/KvASci0/PCcD1fezuqZFjBgXpE4DIDJa2AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:35:35.394284Z"},"content_sha256":"d3713c0ab7154e7571f0be4159de0717b38d57c1ea78f4399ef5c06f5263d274","schema_version":"1.0","event_id":"sha256:d3713c0ab7154e7571f0be4159de0717b38d57c1ea78f4399ef5c06f5263d274"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:4MB6WG4PMDY7ZPOAGOVNOJDYPX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"RadioLensfit: Bayesian weak lensing measurement in the visibility domain","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.IM","authors_text":"Filipe Batoni Abdalla, Lance Miller, Marzia Rivi, Sphesihle Makhathini","submitted_at":"2016-02-18T15:23:41Z","abstract_excerpt":"Observationally, weak lensing has been served so far by optical surveys due to the much larger number densities of background galaxies achieved, which is typically by two to three orders of magnitude compared to radio. However, the high sensitivity of the new generation of radio telescopes such as the Square Kilometre Array (SKA) will provide a density of detected galaxies that is comparable to that found at optical wavelengths, and with significant source shape measurements to make large area radio surveys competitive for weak lensing studies. This will lead weak lensing to become one of the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.05836","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":""},"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":"2026-05-18T01:18:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6yzeeB9z0Osy2IYh0GYiDW7CUDLoVBu0lxyTu2UqmL0h7ds3RSMGocrxGzjSKA1mzmVSlB7RHDMEnOaxHd7UBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:35:35.394704Z"},"content_sha256":"b2275729b1aa15af9ac15b94c7b55697f19f134da9f17dfba130c437974c7bc1","schema_version":"1.0","event_id":"sha256:b2275729b1aa15af9ac15b94c7b55697f19f134da9f17dfba130c437974c7bc1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4MB6WG4PMDY7ZPOAGOVNOJDYPX/bundle.json","state_url":"https://pith.science/pith/4MB6WG4PMDY7ZPOAGOVNOJDYPX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4MB6WG4PMDY7ZPOAGOVNOJDYPX/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":"2026-05-27T07:35:35Z","links":{"resolver":"https://pith.science/pith/4MB6WG4PMDY7ZPOAGOVNOJDYPX","bundle":"https://pith.science/pith/4MB6WG4PMDY7ZPOAGOVNOJDYPX/bundle.json","state":"https://pith.science/pith/4MB6WG4PMDY7ZPOAGOVNOJDYPX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4MB6WG4PMDY7ZPOAGOVNOJDYPX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:4MB6WG4PMDY7ZPOAGOVNOJDYPX","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":"be15d39f6064754b69fea715718bbeee51d530acaf6a31fe85e59b6d03b51b0b","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-02-18T15:23:41Z","title_canon_sha256":"bf138d68fc8893ef7c9db0c8fe49234660822f54c06ff0279ab7784e8ad1b53b"},"schema_version":"1.0","source":{"id":"1602.05836","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.05836","created_at":"2026-05-18T01:18:56Z"},{"alias_kind":"arxiv_version","alias_value":"1602.05836v2","created_at":"2026-05-18T01:18:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.05836","created_at":"2026-05-18T01:18:56Z"},{"alias_kind":"pith_short_12","alias_value":"4MB6WG4PMDY7","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4MB6WG4PMDY7ZPOA","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4MB6WG4P","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:b2275729b1aa15af9ac15b94c7b55697f19f134da9f17dfba130c437974c7bc1","target":"graph","created_at":"2026-05-18T01:18:56Z","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":"Observationally, weak lensing has been served so far by optical surveys due to the much larger number densities of background galaxies achieved, which is typically by two to three orders of magnitude compared to radio. However, the high sensitivity of the new generation of radio telescopes such as the Square Kilometre Array (SKA) will provide a density of detected galaxies that is comparable to that found at optical wavelengths, and with significant source shape measurements to make large area radio surveys competitive for weak lensing studies. This will lead weak lensing to become one of the ","authors_text":"Filipe Batoni Abdalla, Lance Miller, Marzia Rivi, Sphesihle Makhathini","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-02-18T15:23:41Z","title":"RadioLensfit: Bayesian weak lensing measurement in the visibility domain"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.05836","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:d3713c0ab7154e7571f0be4159de0717b38d57c1ea78f4399ef5c06f5263d274","target":"record","created_at":"2026-05-18T01:18:56Z","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":"be15d39f6064754b69fea715718bbeee51d530acaf6a31fe85e59b6d03b51b0b","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-02-18T15:23:41Z","title_canon_sha256":"bf138d68fc8893ef7c9db0c8fe49234660822f54c06ff0279ab7784e8ad1b53b"},"schema_version":"1.0","source":{"id":"1602.05836","kind":"arxiv","version":2}},"canonical_sha256":"e303eb1b8f60f1fcbdc033aad724787df96196702bb3de6b01a7849d05c1b34c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e303eb1b8f60f1fcbdc033aad724787df96196702bb3de6b01a7849d05c1b34c","first_computed_at":"2026-05-18T01:18:56.962585Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:56.962585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XbfRHRLEFMucK/eZ71w6gcwf+NxSvb/NM/rATMEC+fn3lzI0SaI6Fk88InAOSQ2m6h7O9OyHOjlelQ8NdF5gCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:56.962985Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.05836","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d3713c0ab7154e7571f0be4159de0717b38d57c1ea78f4399ef5c06f5263d274","sha256:b2275729b1aa15af9ac15b94c7b55697f19f134da9f17dfba130c437974c7bc1"],"state_sha256":"f85603d0bed9cd2cde8e5935bf20afbca234d29dc2473373614d9b66ccfcc128"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3xD1bCxJt+UigTlNicg1DWrcB0qUPeTCFb+P0ozTiCVPEcPYu8RmtSm1aO1T+HdhP018eiO8E7VUDZjvoWnvAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T07:35:35.396911Z","bundle_sha256":"904dd592780cb88af84f13eef8a0defcdf4f6f115b708010212279e708baaa78"}}