{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:7T6OXB6JM7INUUCRRYS6MQERTB","short_pith_number":"pith:7T6OXB6J","canonical_record":{"source":{"id":"1801.00128","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-12-30T12:42:21Z","cross_cats_sorted":[],"title_canon_sha256":"d5e6e8d73297119f2ea1b33acfb2689b0460e5b3fc2d92c1d4952fb2967b79d9","abstract_canon_sha256":"0a662cc41229bd88a5f4ebe7cf09f94e89d4a869deacef3bc0bbcf1bf9bc2797"},"schema_version":"1.0"},"canonical_sha256":"fcfceb87c967d0da50518e25e64091987b025cc7da5c406304f8f9f5c6c0d22b","source":{"kind":"arxiv","id":"1801.00128","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.00128","created_at":"2026-05-18T00:26:23Z"},{"alias_kind":"arxiv_version","alias_value":"1801.00128v1","created_at":"2026-05-18T00:26:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.00128","created_at":"2026-05-18T00:26:23Z"},{"alias_kind":"pith_short_12","alias_value":"7T6OXB6JM7IN","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7T6OXB6JM7INUUCR","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7T6OXB6J","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:7T6OXB6JM7INUUCRRYS6MQERTB","target":"record","payload":{"canonical_record":{"source":{"id":"1801.00128","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-12-30T12:42:21Z","cross_cats_sorted":[],"title_canon_sha256":"d5e6e8d73297119f2ea1b33acfb2689b0460e5b3fc2d92c1d4952fb2967b79d9","abstract_canon_sha256":"0a662cc41229bd88a5f4ebe7cf09f94e89d4a869deacef3bc0bbcf1bf9bc2797"},"schema_version":"1.0"},"canonical_sha256":"fcfceb87c967d0da50518e25e64091987b025cc7da5c406304f8f9f5c6c0d22b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:26:23.112624Z","signature_b64":"45fNbE81zfKZBthcJzLMtUq5o5bqCltbzaQJMPZbrfIRsy2OGPT83BOz3ZEEwIS+CqJNaCo8sSr/od6dJaV4DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fcfceb87c967d0da50518e25e64091987b025cc7da5c406304f8f9f5c6c0d22b","last_reissued_at":"2026-05-18T00:26:23.111945Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:26:23.111945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.00128","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":"2026-05-18T00:26:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bAkAZmGGtlNIsNQuFOAVb/vuFmj/Cu976Rk5cxuaN3bxW2wizDrTyzxaKnf/h08ypiMfCSaFpBwQZ/tl2JWqDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T21:52:35.453627Z"},"content_sha256":"17a95c26aa8ae0dcc6423575480172911e9644111e58ccc1927e17959d05cf29","schema_version":"1.0","event_id":"sha256:17a95c26aa8ae0dcc6423575480172911e9644111e58ccc1927e17959d05cf29"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:7T6OXB6JM7INUUCRRYS6MQERTB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hubble law: measure and interpretation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Georges Paturel, Pekka Teerikorpi, Yurij Baryshev","submitted_at":"2017-12-30T12:42:21Z","abstract_excerpt":"We have had the chance to live through a fascinating revolution in measuring the fundamental empirical cosmological Hubble law. The key progress is analysed : 1) improvement of observational means (ground-based radio and optical observations, space missions) ; 2) understanding of the biases that affect both distant and local determinations of the Hubble constant; 3) new theoretical and observational results. These circumstances encourage us to take a critical look at some facts and ideas related to the cosmological red-shift. This is important because we are probably on the eve of a new unders"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.00128","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":"2026-05-18T00:26:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CNv31b9NqC0NWfl8RPBvrKXaptdexuXxMaTHF/94vS+28ZgVUHCCWp9H/PleUz3pq8+AKBrnGJXbWiGFWl14BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T21:52:35.453968Z"},"content_sha256":"239dd356e4add755ea10c0cfc4cacce6764d988225638a88dc68164078458ed7","schema_version":"1.0","event_id":"sha256:239dd356e4add755ea10c0cfc4cacce6764d988225638a88dc68164078458ed7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7T6OXB6JM7INUUCRRYS6MQERTB/bundle.json","state_url":"https://pith.science/pith/7T6OXB6JM7INUUCRRYS6MQERTB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7T6OXB6JM7INUUCRRYS6MQERTB/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":"2026-06-10T21:52:35Z","links":{"resolver":"https://pith.science/pith/7T6OXB6JM7INUUCRRYS6MQERTB","bundle":"https://pith.science/pith/7T6OXB6JM7INUUCRRYS6MQERTB/bundle.json","state":"https://pith.science/pith/7T6OXB6JM7INUUCRRYS6MQERTB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7T6OXB6JM7INUUCRRYS6MQERTB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7T6OXB6JM7INUUCRRYS6MQERTB","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":"0a662cc41229bd88a5f4ebe7cf09f94e89d4a869deacef3bc0bbcf1bf9bc2797","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-12-30T12:42:21Z","title_canon_sha256":"d5e6e8d73297119f2ea1b33acfb2689b0460e5b3fc2d92c1d4952fb2967b79d9"},"schema_version":"1.0","source":{"id":"1801.00128","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.00128","created_at":"2026-05-18T00:26:23Z"},{"alias_kind":"arxiv_version","alias_value":"1801.00128v1","created_at":"2026-05-18T00:26:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.00128","created_at":"2026-05-18T00:26:23Z"},{"alias_kind":"pith_short_12","alias_value":"7T6OXB6JM7IN","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7T6OXB6JM7INUUCR","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7T6OXB6J","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:239dd356e4add755ea10c0cfc4cacce6764d988225638a88dc68164078458ed7","target":"graph","created_at":"2026-05-18T00:26:23Z","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 have had the chance to live through a fascinating revolution in measuring the fundamental empirical cosmological Hubble law. The key progress is analysed : 1) improvement of observational means (ground-based radio and optical observations, space missions) ; 2) understanding of the biases that affect both distant and local determinations of the Hubble constant; 3) new theoretical and observational results. These circumstances encourage us to take a critical look at some facts and ideas related to the cosmological red-shift. This is important because we are probably on the eve of a new unders","authors_text":"Georges Paturel, Pekka Teerikorpi, Yurij Baryshev","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-12-30T12:42:21Z","title":"Hubble law: measure and interpretation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.00128","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":"sha256:17a95c26aa8ae0dcc6423575480172911e9644111e58ccc1927e17959d05cf29","target":"record","created_at":"2026-05-18T00:26:23Z","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":"0a662cc41229bd88a5f4ebe7cf09f94e89d4a869deacef3bc0bbcf1bf9bc2797","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-12-30T12:42:21Z","title_canon_sha256":"d5e6e8d73297119f2ea1b33acfb2689b0460e5b3fc2d92c1d4952fb2967b79d9"},"schema_version":"1.0","source":{"id":"1801.00128","kind":"arxiv","version":1}},"canonical_sha256":"fcfceb87c967d0da50518e25e64091987b025cc7da5c406304f8f9f5c6c0d22b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fcfceb87c967d0da50518e25e64091987b025cc7da5c406304f8f9f5c6c0d22b","first_computed_at":"2026-05-18T00:26:23.111945Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:26:23.111945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"45fNbE81zfKZBthcJzLMtUq5o5bqCltbzaQJMPZbrfIRsy2OGPT83BOz3ZEEwIS+CqJNaCo8sSr/od6dJaV4DA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:26:23.112624Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.00128","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17a95c26aa8ae0dcc6423575480172911e9644111e58ccc1927e17959d05cf29","sha256:239dd356e4add755ea10c0cfc4cacce6764d988225638a88dc68164078458ed7"],"state_sha256":"44ee95c6af5006553d939daf2101fd98fcced805733eb4d1dcef76c68af05cf0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hiNx0bBfhcga11WqXhaFjSFx94HGiTRd4EDYakSGfwZtWleoj34UwtLDVHcTgmcDnAUngEk0K7q9ETafL+fgCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T21:52:35.455863Z","bundle_sha256":"c853c1a22d8a4f222b93f88015de75fce976e4f231c7d1d298d6fdbd00601e1b"}}