{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:636VVNG6BAOFX5QOZJEMCFDVIV","short_pith_number":"pith:636VVNG6","canonical_record":{"source":{"id":"1209.1200","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-09-06T07:19:22Z","cross_cats_sorted":[],"title_canon_sha256":"f17813c75f8c969df6a79e84211a5e06ceeccaad0f4451e8663bdfc59de6f173","abstract_canon_sha256":"f5061f13d0a967fda3c7c40476eac081f11a3e24e971fcb2cd3283e8e77964fb"},"schema_version":"1.0"},"canonical_sha256":"f6fd5ab4de081c5bf60eca48c11475454f8fec55360c35466fd6de8db63479fc","source":{"kind":"arxiv","id":"1209.1200","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.1200","created_at":"2026-05-18T03:46:06Z"},{"alias_kind":"arxiv_version","alias_value":"1209.1200v1","created_at":"2026-05-18T03:46:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.1200","created_at":"2026-05-18T03:46:06Z"},{"alias_kind":"pith_short_12","alias_value":"636VVNG6BAOF","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"636VVNG6BAOFX5QO","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"636VVNG6","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:636VVNG6BAOFX5QOZJEMCFDVIV","target":"record","payload":{"canonical_record":{"source":{"id":"1209.1200","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-09-06T07:19:22Z","cross_cats_sorted":[],"title_canon_sha256":"f17813c75f8c969df6a79e84211a5e06ceeccaad0f4451e8663bdfc59de6f173","abstract_canon_sha256":"f5061f13d0a967fda3c7c40476eac081f11a3e24e971fcb2cd3283e8e77964fb"},"schema_version":"1.0"},"canonical_sha256":"f6fd5ab4de081c5bf60eca48c11475454f8fec55360c35466fd6de8db63479fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:06.269058Z","signature_b64":"0d+KVdB9jfO0sniqeu54Ukw5fbESpPnArSuYja4SqcmJGqPtXszsqhCQOEu0tkwlHL1T6bz74R/zUeIPX/Q6BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f6fd5ab4de081c5bf60eca48c11475454f8fec55360c35466fd6de8db63479fc","last_reissued_at":"2026-05-18T03:46:06.268352Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:06.268352Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.1200","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":"2026-05-18T03:46:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2PqNzjzXCnNak0RrYYuexSuw/+WUwyTOwcglK0RvBZiwMPobPTEEXTLWoWn6kBIey8FHHVb1FQYTJ3HXzNcXBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T14:47:35.492925Z"},"content_sha256":"5b05c84e5228cabcbf202e1fb28374e7affa1d0dabb98f0983bfcfe01235e10d","schema_version":"1.0","event_id":"sha256:5b05c84e5228cabcbf202e1fb28374e7affa1d0dabb98f0983bfcfe01235e10d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:636VVNG6BAOFX5QOZJEMCFDVIV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Ultra Fast Image Generator (UFig) for wide-field astronomy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Adam Amara, Alexandre R\\'efr\\'egier, Joel Berg\\'e, Lukas Gamper","submitted_at":"2012-09-06T07:19:22Z","abstract_excerpt":"Simulated wide-field images are becoming an important part of observational astronomy, either to prepare for new surveys or to test measurement methods. In order to efficiently explore vast parameter spaces, the computational speed of simulation codes is a central requirement to their implementation. We introduce the Ultra Fast Image Generator (UFig) which aims to bring wide-field imaging simulations to the current limits of computational capabilities. We achieve this goal through: (1) models of galaxies, stars and observational conditions, which, while simple, capture the key features necessa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.1200","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":"2026-05-18T03:46:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lgL1XNESAPfIFQNEo1WBti4Mlgvs9G+pqqMYGuUopDgNe+HBXVuKGBR1CvyxskBNap3xqB+NWgoD9cxzIOghCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T14:47:35.493355Z"},"content_sha256":"347b410b611ae890be9bfd73eba31004f046cda3086e2b3007e0fe5d3b5805f1","schema_version":"1.0","event_id":"sha256:347b410b611ae890be9bfd73eba31004f046cda3086e2b3007e0fe5d3b5805f1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/636VVNG6BAOFX5QOZJEMCFDVIV/bundle.json","state_url":"https://pith.science/pith/636VVNG6BAOFX5QOZJEMCFDVIV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/636VVNG6BAOFX5QOZJEMCFDVIV/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":"2026-05-22T14:47:35Z","links":{"resolver":"https://pith.science/pith/636VVNG6BAOFX5QOZJEMCFDVIV","bundle":"https://pith.science/pith/636VVNG6BAOFX5QOZJEMCFDVIV/bundle.json","state":"https://pith.science/pith/636VVNG6BAOFX5QOZJEMCFDVIV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/636VVNG6BAOFX5QOZJEMCFDVIV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:636VVNG6BAOFX5QOZJEMCFDVIV","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":"f5061f13d0a967fda3c7c40476eac081f11a3e24e971fcb2cd3283e8e77964fb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-09-06T07:19:22Z","title_canon_sha256":"f17813c75f8c969df6a79e84211a5e06ceeccaad0f4451e8663bdfc59de6f173"},"schema_version":"1.0","source":{"id":"1209.1200","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.1200","created_at":"2026-05-18T03:46:06Z"},{"alias_kind":"arxiv_version","alias_value":"1209.1200v1","created_at":"2026-05-18T03:46:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.1200","created_at":"2026-05-18T03:46:06Z"},{"alias_kind":"pith_short_12","alias_value":"636VVNG6BAOF","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"636VVNG6BAOFX5QO","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"636VVNG6","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:347b410b611ae890be9bfd73eba31004f046cda3086e2b3007e0fe5d3b5805f1","target":"graph","created_at":"2026-05-18T03:46:06Z","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":"Simulated wide-field images are becoming an important part of observational astronomy, either to prepare for new surveys or to test measurement methods. In order to efficiently explore vast parameter spaces, the computational speed of simulation codes is a central requirement to their implementation. We introduce the Ultra Fast Image Generator (UFig) which aims to bring wide-field imaging simulations to the current limits of computational capabilities. We achieve this goal through: (1) models of galaxies, stars and observational conditions, which, while simple, capture the key features necessa","authors_text":"Adam Amara, Alexandre R\\'efr\\'egier, Joel Berg\\'e, Lukas Gamper","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-09-06T07:19:22Z","title":"An Ultra Fast Image Generator (UFig) for wide-field astronomy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.1200","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":"sha256:5b05c84e5228cabcbf202e1fb28374e7affa1d0dabb98f0983bfcfe01235e10d","target":"record","created_at":"2026-05-18T03:46:06Z","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":"f5061f13d0a967fda3c7c40476eac081f11a3e24e971fcb2cd3283e8e77964fb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-09-06T07:19:22Z","title_canon_sha256":"f17813c75f8c969df6a79e84211a5e06ceeccaad0f4451e8663bdfc59de6f173"},"schema_version":"1.0","source":{"id":"1209.1200","kind":"arxiv","version":1}},"canonical_sha256":"f6fd5ab4de081c5bf60eca48c11475454f8fec55360c35466fd6de8db63479fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f6fd5ab4de081c5bf60eca48c11475454f8fec55360c35466fd6de8db63479fc","first_computed_at":"2026-05-18T03:46:06.268352Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:46:06.268352Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0d+KVdB9jfO0sniqeu54Ukw5fbESpPnArSuYja4SqcmJGqPtXszsqhCQOEu0tkwlHL1T6bz74R/zUeIPX/Q6BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:46:06.269058Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.1200","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b05c84e5228cabcbf202e1fb28374e7affa1d0dabb98f0983bfcfe01235e10d","sha256:347b410b611ae890be9bfd73eba31004f046cda3086e2b3007e0fe5d3b5805f1"],"state_sha256":"3fc4eb22c26fa774afad052aee1e3cbe7ff2f04cb4ea62852785f200e166756f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cuzPlQVlSIUr3AvKKa9Ui7YODbLG5gJO4HRSjlMSUQYh9N4f2Gqav1HVJfI/cW2lmbPLPbA6oD/tHpV/NuyzAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T14:47:35.495892Z","bundle_sha256":"0010abbd4fd3b81948d90a1475bf19792030afca932235405d3ad9b112f170b1"}}