{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:2SK5DA7MT6N7GUSK73XCIT6TAK","short_pith_number":"pith:2SK5DA7M","canonical_record":{"source":{"id":"1301.3968","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-01-17T02:19:36Z","cross_cats_sorted":[],"title_canon_sha256":"d108dfd758ec5998e46c31370aa4d06a7f0502edd6824146a8cb8839c89d5b2a","abstract_canon_sha256":"0d79ce8375fff6bc18a64648ed5272d7a093f1e86276ca418c9fb0db0d5777aa"},"schema_version":"1.0"},"canonical_sha256":"d495d183ec9f9bf3524afeee244fd30294f5ec0e292e0bec1a994b03bcb1468e","source":{"kind":"arxiv","id":"1301.3968","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.3968","created_at":"2026-05-18T01:52:06Z"},{"alias_kind":"arxiv_version","alias_value":"1301.3968v1","created_at":"2026-05-18T01:52:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.3968","created_at":"2026-05-18T01:52:06Z"},{"alias_kind":"pith_short_12","alias_value":"2SK5DA7MT6N7","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2SK5DA7MT6N7GUSK","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2SK5DA7M","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:2SK5DA7MT6N7GUSK73XCIT6TAK","target":"record","payload":{"canonical_record":{"source":{"id":"1301.3968","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-01-17T02:19:36Z","cross_cats_sorted":[],"title_canon_sha256":"d108dfd758ec5998e46c31370aa4d06a7f0502edd6824146a8cb8839c89d5b2a","abstract_canon_sha256":"0d79ce8375fff6bc18a64648ed5272d7a093f1e86276ca418c9fb0db0d5777aa"},"schema_version":"1.0"},"canonical_sha256":"d495d183ec9f9bf3524afeee244fd30294f5ec0e292e0bec1a994b03bcb1468e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:06.384741Z","signature_b64":"+2fbhZB2i2nfzs0gRp+inlVYAsX96tkUMKXsBf6qWKszHs1mSGGGz+QRGMPI363f+8O9zYOIIC4p08oByVVfCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d495d183ec9f9bf3524afeee244fd30294f5ec0e292e0bec1a994b03bcb1468e","last_reissued_at":"2026-05-18T01:52:06.384213Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:06.384213Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1301.3968","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":"2026-05-18T01:52:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LpkisWEnNWmNc+09rzUHTCG3N7SzseEjB1P3bXZtdmhlB9SvFPFipd/t35chpObQDxepj2E1GnICpG9T6vf5BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:07:08.127092Z"},"content_sha256":"cb67a56e94f9bbd5f0a894b3e36418588dc2b8bc39e086ee2cfea9804a636bfc","schema_version":"1.0","event_id":"sha256:cb67a56e94f9bbd5f0a894b3e36418588dc2b8bc39e086ee2cfea9804a636bfc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:2SK5DA7MT6N7GUSK73XCIT6TAK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Performance of a novel fast transients detection system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Cathryn Trott, Jean-Pierre Macquart, Nathan Clarke","submitted_at":"2013-01-17T02:19:36Z","abstract_excerpt":"We investigate the S/N of a new incoherent dedispersion algorithm optimized for FPGA-based architectures intended for deployment on ASKAP and other SKA precursors for fast transients surveys. Unlike conventional CPU- and GPU-optimized incoherent dedispersion algorithms, this algorithm has the freedom to maximize the S/N by way of programmable dispersion profiles that enable the inclusion of different numbers of time samples per spectral channel. This allows, for example, more samples to be summed at lower frequencies where intra-channel dispersion smearing is larger, or it could even be used t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.3968","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":"2026-05-18T01:52:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MvXHrEILRo2reuptzSDOdksxn+ZhvTUhAKAb46OXSrptV6uAEm28sY0vc+fbozfQZz+hSRr6MyB4FgCWAYNyBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:07:08.127748Z"},"content_sha256":"98a02f104e175076a97b30a7bd5445498bb4888736d8ce37df3908333ec5f02d","schema_version":"1.0","event_id":"sha256:98a02f104e175076a97b30a7bd5445498bb4888736d8ce37df3908333ec5f02d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2SK5DA7MT6N7GUSK73XCIT6TAK/bundle.json","state_url":"https://pith.science/pith/2SK5DA7MT6N7GUSK73XCIT6TAK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2SK5DA7MT6N7GUSK73XCIT6TAK/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":"2026-05-27T04:07:08Z","links":{"resolver":"https://pith.science/pith/2SK5DA7MT6N7GUSK73XCIT6TAK","bundle":"https://pith.science/pith/2SK5DA7MT6N7GUSK73XCIT6TAK/bundle.json","state":"https://pith.science/pith/2SK5DA7MT6N7GUSK73XCIT6TAK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2SK5DA7MT6N7GUSK73XCIT6TAK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2SK5DA7MT6N7GUSK73XCIT6TAK","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":"0d79ce8375fff6bc18a64648ed5272d7a093f1e86276ca418c9fb0db0d5777aa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-01-17T02:19:36Z","title_canon_sha256":"d108dfd758ec5998e46c31370aa4d06a7f0502edd6824146a8cb8839c89d5b2a"},"schema_version":"1.0","source":{"id":"1301.3968","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.3968","created_at":"2026-05-18T01:52:06Z"},{"alias_kind":"arxiv_version","alias_value":"1301.3968v1","created_at":"2026-05-18T01:52:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.3968","created_at":"2026-05-18T01:52:06Z"},{"alias_kind":"pith_short_12","alias_value":"2SK5DA7MT6N7","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2SK5DA7MT6N7GUSK","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2SK5DA7M","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:98a02f104e175076a97b30a7bd5445498bb4888736d8ce37df3908333ec5f02d","target":"graph","created_at":"2026-05-18T01:52:06Z","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":"We investigate the S/N of a new incoherent dedispersion algorithm optimized for FPGA-based architectures intended for deployment on ASKAP and other SKA precursors for fast transients surveys. Unlike conventional CPU- and GPU-optimized incoherent dedispersion algorithms, this algorithm has the freedom to maximize the S/N by way of programmable dispersion profiles that enable the inclusion of different numbers of time samples per spectral channel. This allows, for example, more samples to be summed at lower frequencies where intra-channel dispersion smearing is larger, or it could even be used t","authors_text":"Cathryn Trott, Jean-Pierre Macquart, Nathan Clarke","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-01-17T02:19:36Z","title":"Performance of a novel fast transients detection system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.3968","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:cb67a56e94f9bbd5f0a894b3e36418588dc2b8bc39e086ee2cfea9804a636bfc","target":"record","created_at":"2026-05-18T01:52:06Z","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":"0d79ce8375fff6bc18a64648ed5272d7a093f1e86276ca418c9fb0db0d5777aa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-01-17T02:19:36Z","title_canon_sha256":"d108dfd758ec5998e46c31370aa4d06a7f0502edd6824146a8cb8839c89d5b2a"},"schema_version":"1.0","source":{"id":"1301.3968","kind":"arxiv","version":1}},"canonical_sha256":"d495d183ec9f9bf3524afeee244fd30294f5ec0e292e0bec1a994b03bcb1468e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d495d183ec9f9bf3524afeee244fd30294f5ec0e292e0bec1a994b03bcb1468e","first_computed_at":"2026-05-18T01:52:06.384213Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:06.384213Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+2fbhZB2i2nfzs0gRp+inlVYAsX96tkUMKXsBf6qWKszHs1mSGGGz+QRGMPI363f+8O9zYOIIC4p08oByVVfCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:06.384741Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.3968","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cb67a56e94f9bbd5f0a894b3e36418588dc2b8bc39e086ee2cfea9804a636bfc","sha256:98a02f104e175076a97b30a7bd5445498bb4888736d8ce37df3908333ec5f02d"],"state_sha256":"5b2f09e184e73aeee0704657790b46770cb0f04cc1711b9c975a3e860af9afcc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P9IA56BRPry6qSqu4NknMILPWnex7Sv2NL9Qh2IO8M9PvXbp4gaKrmZMt7IwQUxD+fqmpOpKPvgY+rTsz7m1Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T04:07:08.132295Z","bundle_sha256":"3fa13ca478c59ddb5120050a4a54c711f34210e4ac6f14fc50f6555a3142b189"}}