{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:ON26IWJNXLXIXRSDZBCPS63LLX","short_pith_number":"pith:ON26IWJN","canonical_record":{"source":{"id":"1703.10149","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-03-29T17:27:17Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"fe5ecbddbf01a659acb44848dd826b8603b5b2a0cffebdf9d9bfb8c15b93eab2","abstract_canon_sha256":"1bb6074dababfb8f018a47ce36e50b1953f64e68979ca8af8fef85cdd4f8b2df"},"schema_version":"1.0"},"canonical_sha256":"7375e4592dbaee8bc643c844f97b6b5def9b02f808c0036f3969d866bec9efff","source":{"kind":"arxiv","id":"1703.10149","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.10149","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"arxiv_version","alias_value":"1703.10149v1","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.10149","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"pith_short_12","alias_value":"ON26IWJNXLXI","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"ON26IWJNXLXIXRSD","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"ON26IWJN","created_at":"2026-05-18T12:31:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:ON26IWJNXLXIXRSDZBCPS63LLX","target":"record","payload":{"canonical_record":{"source":{"id":"1703.10149","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-03-29T17:27:17Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"fe5ecbddbf01a659acb44848dd826b8603b5b2a0cffebdf9d9bfb8c15b93eab2","abstract_canon_sha256":"1bb6074dababfb8f018a47ce36e50b1953f64e68979ca8af8fef85cdd4f8b2df"},"schema_version":"1.0"},"canonical_sha256":"7375e4592dbaee8bc643c844f97b6b5def9b02f808c0036f3969d866bec9efff","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:44:51.263511Z","signature_b64":"jxAz6Kmp+1PBhG+T6sTUZSfasYe9q+Z4BeFZp2RYayRQC+XhRxb454dmJKCFsXxLzIZWULNCUk9OClKuP4RLAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7375e4592dbaee8bc643c844f97b6b5def9b02f808c0036f3969d866bec9efff","last_reissued_at":"2026-05-18T00:44:51.263017Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:44:51.263017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.10149","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":"2026-05-18T00:44:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6foTISY4pN/IRrnFMlhYWkUCMOPPAyVLKF8smDYCokg23vS6CfsSV5o16Wu5TO9Ol8ib4i9LNXLKLETA8KZsBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:20:57.262160Z"},"content_sha256":"7dd17c8f071fcbc8fb7e8dbc465af9791a9612d4f01aaac6354eb1cb8cfb753e","schema_version":"1.0","event_id":"sha256:7dd17c8f071fcbc8fb7e8dbc465af9791a9612d4f01aaac6354eb1cb8cfb753e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:ON26IWJNXLXIXRSDZBCPS63LLX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fine-structure transitions as a tool for studying variation of alpha at high redshifts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"M. G. Kozlov, S. A. Levshakov","submitted_at":"2017-03-29T17:27:17Z","abstract_excerpt":"Star-forming galaxies at high redshifts are the ideal targets to probe the hypothetical variation of the fine-structure constant alpha over cosmological time scales. We propose a modification of the alkali doublets method which allows us to search for variation in alpha combining far infrared and submillimeter spectroscopic observations. This variation manifests as velocity offsets between the observed positions of the fine-structure and gross-structure transitions when compared to laboratory wavelengths. Here we describe our method whose sensitivity limit to the fractional changes in alpha is"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.10149","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":"2026-05-18T00:44:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tTs9n2O2/Z4lnL4AUf8hWfmRTh0rDQBmImDK1At1YI61bQU3DNFl+6kKoPWOcf/OM6IyoG9sop2Dj+VG2CRYDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:20:57.262541Z"},"content_sha256":"394d1ad194641fb9fb38639ab2e95424c962c8d9491c2c3b071e3b5f51513b16","schema_version":"1.0","event_id":"sha256:394d1ad194641fb9fb38639ab2e95424c962c8d9491c2c3b071e3b5f51513b16"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ON26IWJNXLXIXRSDZBCPS63LLX/bundle.json","state_url":"https://pith.science/pith/ON26IWJNXLXIXRSDZBCPS63LLX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ON26IWJNXLXIXRSDZBCPS63LLX/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":"2026-06-03T02:20:57Z","links":{"resolver":"https://pith.science/pith/ON26IWJNXLXIXRSDZBCPS63LLX","bundle":"https://pith.science/pith/ON26IWJNXLXIXRSDZBCPS63LLX/bundle.json","state":"https://pith.science/pith/ON26IWJNXLXIXRSDZBCPS63LLX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ON26IWJNXLXIXRSDZBCPS63LLX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ON26IWJNXLXIXRSDZBCPS63LLX","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":"1bb6074dababfb8f018a47ce36e50b1953f64e68979ca8af8fef85cdd4f8b2df","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-03-29T17:27:17Z","title_canon_sha256":"fe5ecbddbf01a659acb44848dd826b8603b5b2a0cffebdf9d9bfb8c15b93eab2"},"schema_version":"1.0","source":{"id":"1703.10149","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.10149","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"arxiv_version","alias_value":"1703.10149v1","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.10149","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"pith_short_12","alias_value":"ON26IWJNXLXI","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"ON26IWJNXLXIXRSD","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"ON26IWJN","created_at":"2026-05-18T12:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:394d1ad194641fb9fb38639ab2e95424c962c8d9491c2c3b071e3b5f51513b16","target":"graph","created_at":"2026-05-18T00:44:51Z","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":"Star-forming galaxies at high redshifts are the ideal targets to probe the hypothetical variation of the fine-structure constant alpha over cosmological time scales. We propose a modification of the alkali doublets method which allows us to search for variation in alpha combining far infrared and submillimeter spectroscopic observations. This variation manifests as velocity offsets between the observed positions of the fine-structure and gross-structure transitions when compared to laboratory wavelengths. Here we describe our method whose sensitivity limit to the fractional changes in alpha is","authors_text":"M. G. Kozlov, S. A. Levshakov","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-03-29T17:27:17Z","title":"Fine-structure transitions as a tool for studying variation of alpha at high redshifts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.10149","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":"sha256:7dd17c8f071fcbc8fb7e8dbc465af9791a9612d4f01aaac6354eb1cb8cfb753e","target":"record","created_at":"2026-05-18T00:44:51Z","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":"1bb6074dababfb8f018a47ce36e50b1953f64e68979ca8af8fef85cdd4f8b2df","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-03-29T17:27:17Z","title_canon_sha256":"fe5ecbddbf01a659acb44848dd826b8603b5b2a0cffebdf9d9bfb8c15b93eab2"},"schema_version":"1.0","source":{"id":"1703.10149","kind":"arxiv","version":1}},"canonical_sha256":"7375e4592dbaee8bc643c844f97b6b5def9b02f808c0036f3969d866bec9efff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7375e4592dbaee8bc643c844f97b6b5def9b02f808c0036f3969d866bec9efff","first_computed_at":"2026-05-18T00:44:51.263017Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:44:51.263017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jxAz6Kmp+1PBhG+T6sTUZSfasYe9q+Z4BeFZp2RYayRQC+XhRxb454dmJKCFsXxLzIZWULNCUk9OClKuP4RLAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:44:51.263511Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.10149","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7dd17c8f071fcbc8fb7e8dbc465af9791a9612d4f01aaac6354eb1cb8cfb753e","sha256:394d1ad194641fb9fb38639ab2e95424c962c8d9491c2c3b071e3b5f51513b16"],"state_sha256":"828adae81b190cc14a8fa641de1d59ce31e9a6e2b0996548ea98709bb6fc0f5e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hYYSVdAGxmVgQWYBirIPc5ZG3IJPRpbFOFwK6AJOaOeZdCscgQbGrpT5Euj4SI4VLX24ivwfdeIjYqOFeaTABA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T02:20:57.264554Z","bundle_sha256":"bd7561565c396b15b1d4d1d5318973dc02ed334e724a314a524d05f997c80bba"}}