{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:2N24LWH37XKD4GCZFKO256HPBP","short_pith_number":"pith:2N24LWH3","canonical_record":{"source":{"id":"1703.00643","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-02T07:20:19Z","cross_cats_sorted":[],"title_canon_sha256":"16b165862ee53127d3d3a95c7635f34f51650d84350d71dc7ecf2e62944dc26a","abstract_canon_sha256":"496d7507a068058e1195ad8be040463b5f982f9b791f17dcc882cca67b796788"},"schema_version":"1.0"},"canonical_sha256":"d375c5d8fbfdd43e18592a9daef8ef0bfd60c6e646fe611ded65c745f664938b","source":{"kind":"arxiv","id":"1703.00643","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.00643","created_at":"2026-05-18T00:40:07Z"},{"alias_kind":"arxiv_version","alias_value":"1703.00643v1","created_at":"2026-05-18T00:40:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.00643","created_at":"2026-05-18T00:40:07Z"},{"alias_kind":"pith_short_12","alias_value":"2N24LWH37XKD","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"2N24LWH37XKD4GCZ","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"2N24LWH3","created_at":"2026-05-18T12:30:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:2N24LWH37XKD4GCZFKO256HPBP","target":"record","payload":{"canonical_record":{"source":{"id":"1703.00643","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-02T07:20:19Z","cross_cats_sorted":[],"title_canon_sha256":"16b165862ee53127d3d3a95c7635f34f51650d84350d71dc7ecf2e62944dc26a","abstract_canon_sha256":"496d7507a068058e1195ad8be040463b5f982f9b791f17dcc882cca67b796788"},"schema_version":"1.0"},"canonical_sha256":"d375c5d8fbfdd43e18592a9daef8ef0bfd60c6e646fe611ded65c745f664938b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:40:07.044228Z","signature_b64":"5UoXk5Y/zz2gP69PXh4mP/bWprMdBVce+KPYFDGHUH3O2x2LyzaFb4FtjZpeisO318dPIFsvtekiV1pOUO3ECA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d375c5d8fbfdd43e18592a9daef8ef0bfd60c6e646fe611ded65c745f664938b","last_reissued_at":"2026-05-18T00:40:07.043637Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:40:07.043637Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.00643","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":"2026-05-18T00:40:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RQy/mELuBQDTOkAg+F17PW+rIgx9wHE/kkk4ig+YK5l5+9TwBshHB6KoXF54fjqIxE3yYNWp1aeiCopPSRBCAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:37:58.524163Z"},"content_sha256":"761518423ff9de7005047b5f07576af867d0343614b2d22ae54e888e6fad1ccb","schema_version":"1.0","event_id":"sha256:761518423ff9de7005047b5f07576af867d0343614b2d22ae54e888e6fad1ccb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:2N24LWH37XKD4GCZFKO256HPBP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Prowess - a software model for the Ooty Wide Field Array","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Visweshwar Ram Marthi","submitted_at":"2017-03-02T07:20:19Z","abstract_excerpt":"One of the scientific objectives of the Ooty Wide Field Array(OWFA) is to observe the redshifted HI emission from z ~ 3.35. Although predictions spell out optimistic outcomes in reasonable integration times, these studies were based purely on analytical assumptions, without accounting for limiting systematics. A software model for OWFA has been developed with a view to understanding the instrument-induced systematics, by describing a complete software model for the instrument. This model has been implemented through a suite of programs, together called Prowess, which has been conceived with a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.00643","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":"2026-05-18T00:40:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QAm7f9cWHGs15RL5Uq2UP57TEpNmYSE10K3gM1s8GGCSyieYv8lD93rBFaVxN436FfvgzL7/iOZaJTaEt5m6Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:37:58.524928Z"},"content_sha256":"8466c7deba964648e70acd3e7e9dde60de8207039be391ddf3b6da9866647997","schema_version":"1.0","event_id":"sha256:8466c7deba964648e70acd3e7e9dde60de8207039be391ddf3b6da9866647997"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2N24LWH37XKD4GCZFKO256HPBP/bundle.json","state_url":"https://pith.science/pith/2N24LWH37XKD4GCZFKO256HPBP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2N24LWH37XKD4GCZFKO256HPBP/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":"2026-05-31T12:37:58Z","links":{"resolver":"https://pith.science/pith/2N24LWH37XKD4GCZFKO256HPBP","bundle":"https://pith.science/pith/2N24LWH37XKD4GCZFKO256HPBP/bundle.json","state":"https://pith.science/pith/2N24LWH37XKD4GCZFKO256HPBP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2N24LWH37XKD4GCZFKO256HPBP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:2N24LWH37XKD4GCZFKO256HPBP","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":"496d7507a068058e1195ad8be040463b5f982f9b791f17dcc882cca67b796788","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-02T07:20:19Z","title_canon_sha256":"16b165862ee53127d3d3a95c7635f34f51650d84350d71dc7ecf2e62944dc26a"},"schema_version":"1.0","source":{"id":"1703.00643","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.00643","created_at":"2026-05-18T00:40:07Z"},{"alias_kind":"arxiv_version","alias_value":"1703.00643v1","created_at":"2026-05-18T00:40:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.00643","created_at":"2026-05-18T00:40:07Z"},{"alias_kind":"pith_short_12","alias_value":"2N24LWH37XKD","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"2N24LWH37XKD4GCZ","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"2N24LWH3","created_at":"2026-05-18T12:30:55Z"}],"graph_snapshots":[{"event_id":"sha256:8466c7deba964648e70acd3e7e9dde60de8207039be391ddf3b6da9866647997","target":"graph","created_at":"2026-05-18T00:40:07Z","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":"One of the scientific objectives of the Ooty Wide Field Array(OWFA) is to observe the redshifted HI emission from z ~ 3.35. Although predictions spell out optimistic outcomes in reasonable integration times, these studies were based purely on analytical assumptions, without accounting for limiting systematics. A software model for OWFA has been developed with a view to understanding the instrument-induced systematics, by describing a complete software model for the instrument. This model has been implemented through a suite of programs, together called Prowess, which has been conceived with a ","authors_text":"Visweshwar Ram Marthi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-02T07:20:19Z","title":"Prowess - a software model for the Ooty Wide Field Array"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.00643","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":"sha256:761518423ff9de7005047b5f07576af867d0343614b2d22ae54e888e6fad1ccb","target":"record","created_at":"2026-05-18T00:40:07Z","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":"496d7507a068058e1195ad8be040463b5f982f9b791f17dcc882cca67b796788","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-02T07:20:19Z","title_canon_sha256":"16b165862ee53127d3d3a95c7635f34f51650d84350d71dc7ecf2e62944dc26a"},"schema_version":"1.0","source":{"id":"1703.00643","kind":"arxiv","version":1}},"canonical_sha256":"d375c5d8fbfdd43e18592a9daef8ef0bfd60c6e646fe611ded65c745f664938b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d375c5d8fbfdd43e18592a9daef8ef0bfd60c6e646fe611ded65c745f664938b","first_computed_at":"2026-05-18T00:40:07.043637Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:40:07.043637Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5UoXk5Y/zz2gP69PXh4mP/bWprMdBVce+KPYFDGHUH3O2x2LyzaFb4FtjZpeisO318dPIFsvtekiV1pOUO3ECA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:40:07.044228Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.00643","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:761518423ff9de7005047b5f07576af867d0343614b2d22ae54e888e6fad1ccb","sha256:8466c7deba964648e70acd3e7e9dde60de8207039be391ddf3b6da9866647997"],"state_sha256":"e95868b5be4ee8c87abff061be309defc5eb827b60ee6bf7dd9e57026ce5acc6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d2seWz8340zIUZmTwgRkik13/pwGJDrfRa05BF8HxNDUOmmMcF3x4d00v++OmwJ7F2S/xBXGqbYOfQClYLiYCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T12:37:58.529187Z","bundle_sha256":"e814fa1b668821ffe11137e0fb032cef42027639578d59e34959d83eb649343b"}}