{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:6CXUBU4CNQCWSQOF332JZM2QVW","short_pith_number":"pith:6CXUBU4C","canonical_record":{"source":{"id":"1210.3069","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-10T21:35:52Z","cross_cats_sorted":[],"title_canon_sha256":"2b6f04a3a19d893d657da013dc8dd45e37e0d7b972ef156082c24560ec0ee137","abstract_canon_sha256":"c51274da5bdf6b7a70d8563fce45eae541b232245b1eb310aea1c2a7cc2a491c"},"schema_version":"1.0"},"canonical_sha256":"f0af40d3826c056941c5def49cb350ada3ad088a411f8d77926aeae39d5b130a","source":{"kind":"arxiv","id":"1210.3069","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.3069","created_at":"2026-05-18T03:43:20Z"},{"alias_kind":"arxiv_version","alias_value":"1210.3069v2","created_at":"2026-05-18T03:43:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.3069","created_at":"2026-05-18T03:43:20Z"},{"alias_kind":"pith_short_12","alias_value":"6CXUBU4CNQCW","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6CXUBU4CNQCWSQOF","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6CXUBU4C","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:6CXUBU4CNQCWSQOF332JZM2QVW","target":"record","payload":{"canonical_record":{"source":{"id":"1210.3069","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-10T21:35:52Z","cross_cats_sorted":[],"title_canon_sha256":"2b6f04a3a19d893d657da013dc8dd45e37e0d7b972ef156082c24560ec0ee137","abstract_canon_sha256":"c51274da5bdf6b7a70d8563fce45eae541b232245b1eb310aea1c2a7cc2a491c"},"schema_version":"1.0"},"canonical_sha256":"f0af40d3826c056941c5def49cb350ada3ad088a411f8d77926aeae39d5b130a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:43:20.117423Z","signature_b64":"7Cu4t3XQ6jochr/efNVgh9zE87iCW/3H0aLtngih6UM2Rozsx8r1gwY0h7cLioDugbWvaEAHWeW3F21E/9JcAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f0af40d3826c056941c5def49cb350ada3ad088a411f8d77926aeae39d5b130a","last_reissued_at":"2026-05-18T03:43:20.116756Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:43:20.116756Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.3069","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":"2026-05-18T03:43:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nDU0N9C5fmQH+nsWSGzXFagmbUFXqc3KNJ8yFZl+S0ID5TniaQVFUB5VPdnp1VXI0AN1VP5s+GDHw0bClClMDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:11:59.335637Z"},"content_sha256":"e5df484d68660df6795b83c8968212eb368ad8fe425ecf5b8ce5ed9ec9843498","schema_version":"1.0","event_id":"sha256:e5df484d68660df6795b83c8968212eb368ad8fe425ecf5b8ce5ed9ec9843498"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:6CXUBU4CNQCWSQOF332JZM2QVW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CALCLENS: Weak Lensing Simulations for Large-area Sky Surveys and Second-order Effects in Cosmic Shear Power Spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Matthew R. Becker (UChicago/KICP)","submitted_at":"2012-10-10T21:35:52Z","abstract_excerpt":"I present a new algorithm, CALCLENS, for efficiently computing weak gravitational lensing shear signals from large N-body light cone simulations over a curved sky. This new algorithm properly accounts for the sky curvature and boundary conditions, is able to produce redshift-dependent shear signals including corrections to the Born approximation by using multiple-plane ray tracing, and properly computes the lensed images of source galaxies in the light cone. The key feature of this algorithm is a new, computationally efficient Poisson solver for the sphere that combines spherical harmonic tran"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.3069","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":"2026-05-18T03:43:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yDEtXNL8A5+EdDZ3MGN/o6nWmMRly3tmcOLkO8cqooYYgtuwxx3+9186LVodAvEh4PyDScvKR2dZ6oRJuLJKCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:11:59.336485Z"},"content_sha256":"036cd670c76be86cf35e756c5d2a6af648199acb3137556e5a690332e49492d2","schema_version":"1.0","event_id":"sha256:036cd670c76be86cf35e756c5d2a6af648199acb3137556e5a690332e49492d2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6CXUBU4CNQCWSQOF332JZM2QVW/bundle.json","state_url":"https://pith.science/pith/6CXUBU4CNQCWSQOF332JZM2QVW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6CXUBU4CNQCWSQOF332JZM2QVW/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":"2026-08-03T18:11:59Z","links":{"resolver":"https://pith.science/pith/6CXUBU4CNQCWSQOF332JZM2QVW","bundle":"https://pith.science/pith/6CXUBU4CNQCWSQOF332JZM2QVW/bundle.json","state":"https://pith.science/pith/6CXUBU4CNQCWSQOF332JZM2QVW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6CXUBU4CNQCWSQOF332JZM2QVW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:6CXUBU4CNQCWSQOF332JZM2QVW","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":"c51274da5bdf6b7a70d8563fce45eae541b232245b1eb310aea1c2a7cc2a491c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-10T21:35:52Z","title_canon_sha256":"2b6f04a3a19d893d657da013dc8dd45e37e0d7b972ef156082c24560ec0ee137"},"schema_version":"1.0","source":{"id":"1210.3069","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.3069","created_at":"2026-05-18T03:43:20Z"},{"alias_kind":"arxiv_version","alias_value":"1210.3069v2","created_at":"2026-05-18T03:43:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.3069","created_at":"2026-05-18T03:43:20Z"},{"alias_kind":"pith_short_12","alias_value":"6CXUBU4CNQCW","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6CXUBU4CNQCWSQOF","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6CXUBU4C","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:036cd670c76be86cf35e756c5d2a6af648199acb3137556e5a690332e49492d2","target":"graph","created_at":"2026-05-18T03:43:20Z","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":"I present a new algorithm, CALCLENS, for efficiently computing weak gravitational lensing shear signals from large N-body light cone simulations over a curved sky. This new algorithm properly accounts for the sky curvature and boundary conditions, is able to produce redshift-dependent shear signals including corrections to the Born approximation by using multiple-plane ray tracing, and properly computes the lensed images of source galaxies in the light cone. The key feature of this algorithm is a new, computationally efficient Poisson solver for the sphere that combines spherical harmonic tran","authors_text":"Matthew R. Becker (UChicago/KICP)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-10T21:35:52Z","title":"CALCLENS: Weak Lensing Simulations for Large-area Sky Surveys and Second-order Effects in Cosmic Shear Power Spectra"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.3069","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:e5df484d68660df6795b83c8968212eb368ad8fe425ecf5b8ce5ed9ec9843498","target":"record","created_at":"2026-05-18T03:43:20Z","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":"c51274da5bdf6b7a70d8563fce45eae541b232245b1eb310aea1c2a7cc2a491c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-10T21:35:52Z","title_canon_sha256":"2b6f04a3a19d893d657da013dc8dd45e37e0d7b972ef156082c24560ec0ee137"},"schema_version":"1.0","source":{"id":"1210.3069","kind":"arxiv","version":2}},"canonical_sha256":"f0af40d3826c056941c5def49cb350ada3ad088a411f8d77926aeae39d5b130a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f0af40d3826c056941c5def49cb350ada3ad088a411f8d77926aeae39d5b130a","first_computed_at":"2026-05-18T03:43:20.116756Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:43:20.116756Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7Cu4t3XQ6jochr/efNVgh9zE87iCW/3H0aLtngih6UM2Rozsx8r1gwY0h7cLioDugbWvaEAHWeW3F21E/9JcAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:43:20.117423Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.3069","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e5df484d68660df6795b83c8968212eb368ad8fe425ecf5b8ce5ed9ec9843498","sha256:036cd670c76be86cf35e756c5d2a6af648199acb3137556e5a690332e49492d2"],"state_sha256":"57045c474b30aa1205c16556ec1c320ea02b9399534ebb4fd4099a7a38907dca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5tY0IR0OtzgOHgjwNQCj2OBeURhfzGiKW6Fz/Z5qt7jeIdt/ZBWmPzw3hA0Vwzrc739ItxwrUC92V13hfcBrDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T18:11:59.343156Z","bundle_sha256":"6e171fba60b9aaf4f7fdaa48654076f3279000e9dcaf8250badd03c19aeb8a6e"}}