{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:XHEFGQXSEEE3HMFBVPY6GZ2VAT","short_pith_number":"pith:XHEFGQXS","canonical_record":{"source":{"id":"1804.07993","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-04-21T16:18:54Z","cross_cats_sorted":[],"title_canon_sha256":"9f3019c58fe32b2957f87617f166fc7131bbdaf69ed44114f2e8dc5bfd1b1950","abstract_canon_sha256":"7e2cc712ef7549d84ee16b2b3035d3783abdcbed858a882098759ab66aefbbb5"},"schema_version":"1.0"},"canonical_sha256":"b9c85342f22109b3b0a1abf1e3675504dbf927707a16e5203312023b913143f8","source":{"kind":"arxiv","id":"1804.07993","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.07993","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"arxiv_version","alias_value":"1804.07993v3","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.07993","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"pith_short_12","alias_value":"XHEFGQXSEEE3","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XHEFGQXSEEE3HMFB","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XHEFGQXS","created_at":"2026-05-18T12:33:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:XHEFGQXSEEE3HMFBVPY6GZ2VAT","target":"record","payload":{"canonical_record":{"source":{"id":"1804.07993","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-04-21T16:18:54Z","cross_cats_sorted":[],"title_canon_sha256":"9f3019c58fe32b2957f87617f166fc7131bbdaf69ed44114f2e8dc5bfd1b1950","abstract_canon_sha256":"7e2cc712ef7549d84ee16b2b3035d3783abdcbed858a882098759ab66aefbbb5"},"schema_version":"1.0"},"canonical_sha256":"b9c85342f22109b3b0a1abf1e3675504dbf927707a16e5203312023b913143f8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:02.574333Z","signature_b64":"GaUZwCLH7/C8g0h2Tf1ZvEL0pKKY3r8XtZ+3rNhu0jRp2Myjz3IlZjEIcA/B7H6vmXqmVIRgM7pmr15fooPjCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9c85342f22109b3b0a1abf1e3675504dbf927707a16e5203312023b913143f8","last_reissued_at":"2026-05-18T00:04:02.573606Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:02.573606Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.07993","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:04:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rdbOOEB/IcnGuXxvuwwbV9iYiKXGJmQFfritbvvBdbADeBIxi0UWntUKlmnaravcTRvAFzUeAzP9ws0TeTWoBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T16:28:29.504819Z"},"content_sha256":"23e0a71cc4a977b59651d0197b5ecef71d77a22b349b034702061f1cca4b7108","schema_version":"1.0","event_id":"sha256:23e0a71cc4a977b59651d0197b5ecef71d77a22b349b034702061f1cca4b7108"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:XHEFGQXSEEE3HMFBVPY6GZ2VAT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dipole Anisotropy as an Essential Qualifier for the Monopole Component of the Cosmic-Dawn Spectral Signature, and the Potential of Diurnal Pattern for Foreground Estimation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Avinash A. Deshpande","submitted_at":"2018-04-21T16:18:54Z","abstract_excerpt":"While the importance of detecting the Global spectral signatures of the red-shifted 21-cm line of atomic hydrogen from the very early epochs cannot be overstated, the associated challenges primarily include isolating the weak signal of interest from the orders of magnitude brighter foregrounds, and extend equally to reliably establishing the origin of the {\\it apparent} global signal to the very early epochs. This letter proposes a critical dipole test that the measurements of the monopole component of the spectrum of interest should necessarily pass. Our criterion is based on a unique corresp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07993","kind":"arxiv","version":3},"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":"2026-05-18T00:04:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UbxAdGtmv3OieFJa+01qTeZax2V2Sr3yNy9hOhnunBVrdfEDAXFkDXolMCJkxIiiMW+sCbJJmVFWU7iMD2mYDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T16:28:29.505643Z"},"content_sha256":"638739914d83f6b7207ba78320bf8146c225afee8500c22c93f32e83cf293cd4","schema_version":"1.0","event_id":"sha256:638739914d83f6b7207ba78320bf8146c225afee8500c22c93f32e83cf293cd4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XHEFGQXSEEE3HMFBVPY6GZ2VAT/bundle.json","state_url":"https://pith.science/pith/XHEFGQXSEEE3HMFBVPY6GZ2VAT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XHEFGQXSEEE3HMFBVPY6GZ2VAT/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":"2026-08-11T16:28:29Z","links":{"resolver":"https://pith.science/pith/XHEFGQXSEEE3HMFBVPY6GZ2VAT","bundle":"https://pith.science/pith/XHEFGQXSEEE3HMFBVPY6GZ2VAT/bundle.json","state":"https://pith.science/pith/XHEFGQXSEEE3HMFBVPY6GZ2VAT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XHEFGQXSEEE3HMFBVPY6GZ2VAT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:XHEFGQXSEEE3HMFBVPY6GZ2VAT","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":"7e2cc712ef7549d84ee16b2b3035d3783abdcbed858a882098759ab66aefbbb5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-04-21T16:18:54Z","title_canon_sha256":"9f3019c58fe32b2957f87617f166fc7131bbdaf69ed44114f2e8dc5bfd1b1950"},"schema_version":"1.0","source":{"id":"1804.07993","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.07993","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"arxiv_version","alias_value":"1804.07993v3","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.07993","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"pith_short_12","alias_value":"XHEFGQXSEEE3","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XHEFGQXSEEE3HMFB","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XHEFGQXS","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:638739914d83f6b7207ba78320bf8146c225afee8500c22c93f32e83cf293cd4","target":"graph","created_at":"2026-05-18T00:04:02Z","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":"While the importance of detecting the Global spectral signatures of the red-shifted 21-cm line of atomic hydrogen from the very early epochs cannot be overstated, the associated challenges primarily include isolating the weak signal of interest from the orders of magnitude brighter foregrounds, and extend equally to reliably establishing the origin of the {\\it apparent} global signal to the very early epochs. This letter proposes a critical dipole test that the measurements of the monopole component of the spectrum of interest should necessarily pass. Our criterion is based on a unique corresp","authors_text":"Avinash A. Deshpande","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-04-21T16:18:54Z","title":"Dipole Anisotropy as an Essential Qualifier for the Monopole Component of the Cosmic-Dawn Spectral Signature, and the Potential of Diurnal Pattern for Foreground Estimation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07993","kind":"arxiv","version":3},"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":"sha256:23e0a71cc4a977b59651d0197b5ecef71d77a22b349b034702061f1cca4b7108","target":"record","created_at":"2026-05-18T00:04:02Z","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":"7e2cc712ef7549d84ee16b2b3035d3783abdcbed858a882098759ab66aefbbb5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-04-21T16:18:54Z","title_canon_sha256":"9f3019c58fe32b2957f87617f166fc7131bbdaf69ed44114f2e8dc5bfd1b1950"},"schema_version":"1.0","source":{"id":"1804.07993","kind":"arxiv","version":3}},"canonical_sha256":"b9c85342f22109b3b0a1abf1e3675504dbf927707a16e5203312023b913143f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9c85342f22109b3b0a1abf1e3675504dbf927707a16e5203312023b913143f8","first_computed_at":"2026-05-18T00:04:02.573606Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:04:02.573606Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GaUZwCLH7/C8g0h2Tf1ZvEL0pKKY3r8XtZ+3rNhu0jRp2Myjz3IlZjEIcA/B7H6vmXqmVIRgM7pmr15fooPjCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:04:02.574333Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.07993","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:23e0a71cc4a977b59651d0197b5ecef71d77a22b349b034702061f1cca4b7108","sha256:638739914d83f6b7207ba78320bf8146c225afee8500c22c93f32e83cf293cd4"],"state_sha256":"0839c76e2dc16e1cf98418f7b97ca60ccfdf0db70fa1107a44db2afa9284cddb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qycn6KNZztedOWiJpjsUwKkAFE8cqENh/pnYgrsbsVvwqZLan5MhlmlakzYEW73vxaSY79JPpq7U3yWv5+aEDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T16:28:29.513510Z","bundle_sha256":"51fee6fc824033fa9c56be98a9ed9203566b3adb24f2528b9e1f0a043cd4c881"}}