{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:BG5W76IH22SO6R4PL2447VGCLS","short_pith_number":"pith:BG5W76IH","canonical_record":{"source":{"id":"1703.00625","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-02T05:19:29Z","cross_cats_sorted":[],"title_canon_sha256":"67b9787cfe3837c512fea989b0b425b9a84b49b21a7c0e92f60dbf832c4bc2d9","abstract_canon_sha256":"53eb63d2ba1ea6f4effdbcfb64c538d42ac913ed62036e949211d233dfe0af2d"},"schema_version":"1.0"},"canonical_sha256":"09bb6ff907d6a4ef478f5eb9cfd4c25c910af165e735c2e0040b2dff3f0dba24","source":{"kind":"arxiv","id":"1703.00625","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.00625","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"arxiv_version","alias_value":"1703.00625v1","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.00625","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"pith_short_12","alias_value":"BG5W76IH22SO","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"BG5W76IH22SO6R4P","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"BG5W76IH","created_at":"2026-05-18T12:31:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:BG5W76IH22SO6R4PL2447VGCLS","target":"record","payload":{"canonical_record":{"source":{"id":"1703.00625","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-02T05:19:29Z","cross_cats_sorted":[],"title_canon_sha256":"67b9787cfe3837c512fea989b0b425b9a84b49b21a7c0e92f60dbf832c4bc2d9","abstract_canon_sha256":"53eb63d2ba1ea6f4effdbcfb64c538d42ac913ed62036e949211d233dfe0af2d"},"schema_version":"1.0"},"canonical_sha256":"09bb6ff907d6a4ef478f5eb9cfd4c25c910af165e735c2e0040b2dff3f0dba24","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:47:45.565794Z","signature_b64":"DqXa4k9KghOtP/PxpIx2a9Wv/2M3IWq5hWiLs4nOPcxa32iKa4uRgO8Yr/xpcApA7hfP+hOtEpxdbxsmhqF8Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"09bb6ff907d6a4ef478f5eb9cfd4c25c910af165e735c2e0040b2dff3f0dba24","last_reissued_at":"2026-05-18T00:47:45.565186Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:47:45.565186Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.00625","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":"2026-05-18T00:47:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E4pI7A7mHbrNp9gnpT9hQTDEShyAVVFWpEgQP/v4YF55Qc9JXBrTestPK/I0y2w5HF6/xlL/35dPD84vs4wXBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T11:06:29.095877Z"},"content_sha256":"7ddf622700419553c036909a1572b606f35e77dac81368a464d226376d033f4a","schema_version":"1.0","event_id":"sha256:7ddf622700419553c036909a1572b606f35e77dac81368a464d226376d033f4a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:BG5W76IH22SO6R4PL2447VGCLS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Receiver System 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":"A.K. Mittal, B.S. Girish, C.R. Subrahmanya, P.K. Manoharan, P. Prasad, R. Somashekar","submitted_at":"2017-03-02T05:19:29Z","abstract_excerpt":"The legacy Ooty Radio Telescope (ORT) is being reconfigured as a 264-element synthesis telescope, called the Ooty Wide Field Array (OWFA). Its antenna elements are the contiguous 1.92 m sections of the parabolic cylinder. It will operate in a 38-MHz frequency band centred at 326.5 MHz and will be equipped with a digital receiver including a 264-element spectral correlator with a spectral resolution of 48 kHz. OWFA is designed to retain the benefits of equatorial mount, continuous 9-hour tracking ability and large collecting area of the legacy telescope and use modern digital techniques to enha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.00625","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":"2026-05-18T00:47:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"spS9V2lkZJsern+/TRXR8VZ3GslHO1Mfmd3K/O2cMO0apTwhi7yyx7jQQdtSqfg+sOFeWEmaJ1ZqbrUbCKM0CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T11:06:29.096608Z"},"content_sha256":"5464e622fb1e6baeaaef238037800a6201e9502ac6b27122ca8054d0ea254ad4","schema_version":"1.0","event_id":"sha256:5464e622fb1e6baeaaef238037800a6201e9502ac6b27122ca8054d0ea254ad4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BG5W76IH22SO6R4PL2447VGCLS/bundle.json","state_url":"https://pith.science/pith/BG5W76IH22SO6R4PL2447VGCLS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BG5W76IH22SO6R4PL2447VGCLS/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":"2026-06-06T11:06:29Z","links":{"resolver":"https://pith.science/pith/BG5W76IH22SO6R4PL2447VGCLS","bundle":"https://pith.science/pith/BG5W76IH22SO6R4PL2447VGCLS/bundle.json","state":"https://pith.science/pith/BG5W76IH22SO6R4PL2447VGCLS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BG5W76IH22SO6R4PL2447VGCLS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:BG5W76IH22SO6R4PL2447VGCLS","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":"53eb63d2ba1ea6f4effdbcfb64c538d42ac913ed62036e949211d233dfe0af2d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-02T05:19:29Z","title_canon_sha256":"67b9787cfe3837c512fea989b0b425b9a84b49b21a7c0e92f60dbf832c4bc2d9"},"schema_version":"1.0","source":{"id":"1703.00625","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.00625","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"arxiv_version","alias_value":"1703.00625v1","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.00625","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"pith_short_12","alias_value":"BG5W76IH22SO","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"BG5W76IH22SO6R4P","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"BG5W76IH","created_at":"2026-05-18T12:31:08Z"}],"graph_snapshots":[{"event_id":"sha256:5464e622fb1e6baeaaef238037800a6201e9502ac6b27122ca8054d0ea254ad4","target":"graph","created_at":"2026-05-18T00:47:45Z","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":"The legacy Ooty Radio Telescope (ORT) is being reconfigured as a 264-element synthesis telescope, called the Ooty Wide Field Array (OWFA). Its antenna elements are the contiguous 1.92 m sections of the parabolic cylinder. It will operate in a 38-MHz frequency band centred at 326.5 MHz and will be equipped with a digital receiver including a 264-element spectral correlator with a spectral resolution of 48 kHz. OWFA is designed to retain the benefits of equatorial mount, continuous 9-hour tracking ability and large collecting area of the legacy telescope and use modern digital techniques to enha","authors_text":"A.K. Mittal, B.S. Girish, C.R. Subrahmanya, P.K. Manoharan, P. Prasad, R. Somashekar","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-02T05:19:29Z","title":"The Receiver System for the Ooty Wide Field Array"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.00625","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":"sha256:7ddf622700419553c036909a1572b606f35e77dac81368a464d226376d033f4a","target":"record","created_at":"2026-05-18T00:47:45Z","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":"53eb63d2ba1ea6f4effdbcfb64c538d42ac913ed62036e949211d233dfe0af2d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-02T05:19:29Z","title_canon_sha256":"67b9787cfe3837c512fea989b0b425b9a84b49b21a7c0e92f60dbf832c4bc2d9"},"schema_version":"1.0","source":{"id":"1703.00625","kind":"arxiv","version":1}},"canonical_sha256":"09bb6ff907d6a4ef478f5eb9cfd4c25c910af165e735c2e0040b2dff3f0dba24","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"09bb6ff907d6a4ef478f5eb9cfd4c25c910af165e735c2e0040b2dff3f0dba24","first_computed_at":"2026-05-18T00:47:45.565186Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:47:45.565186Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DqXa4k9KghOtP/PxpIx2a9Wv/2M3IWq5hWiLs4nOPcxa32iKa4uRgO8Yr/xpcApA7hfP+hOtEpxdbxsmhqF8Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:47:45.565794Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.00625","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7ddf622700419553c036909a1572b606f35e77dac81368a464d226376d033f4a","sha256:5464e622fb1e6baeaaef238037800a6201e9502ac6b27122ca8054d0ea254ad4"],"state_sha256":"1554f7e161d2a4774391ba4ff5f0949dbf3bcb75c3c990e14cc394e1d34898d7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fr5S/FcpmEu0dTCi9w3qDOJwJbzHSTXIgS91vRnM7yMmIIiN30NapYWJiI/ctC255244tFzspWP9HPkaGRnmCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T11:06:29.100703Z","bundle_sha256":"531d98c1aefa796ec662762300591e72eed68c75c654b060fffdef7c4cf8101b"}}