{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:XT2LTRLDMICEDFT6EANVKO62HG","short_pith_number":"pith:XT2LTRLD","canonical_record":{"source":{"id":"1402.5429","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-02-21T21:24:00Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"dfdd156446bd4248b8c5701e75d95a93f6163c77931712edb11685d2718d88d2","abstract_canon_sha256":"61f2eac52b402e819832671742468caafc9b96a75cc1a1d9e344582dae63465c"},"schema_version":"1.0"},"canonical_sha256":"bcf4b9c563620441967e201b553bda39ba22a307c95f0b9fbb8ad31bd32b1e9b","source":{"kind":"arxiv","id":"1402.5429","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.5429","created_at":"2026-05-18T01:44:29Z"},{"alias_kind":"arxiv_version","alias_value":"1402.5429v1","created_at":"2026-05-18T01:44:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.5429","created_at":"2026-05-18T01:44:29Z"},{"alias_kind":"pith_short_12","alias_value":"XT2LTRLDMICE","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XT2LTRLDMICEDFT6","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XT2LTRLD","created_at":"2026-05-18T12:28:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:XT2LTRLDMICEDFT6EANVKO62HG","target":"record","payload":{"canonical_record":{"source":{"id":"1402.5429","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-02-21T21:24:00Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"dfdd156446bd4248b8c5701e75d95a93f6163c77931712edb11685d2718d88d2","abstract_canon_sha256":"61f2eac52b402e819832671742468caafc9b96a75cc1a1d9e344582dae63465c"},"schema_version":"1.0"},"canonical_sha256":"bcf4b9c563620441967e201b553bda39ba22a307c95f0b9fbb8ad31bd32b1e9b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:44:29.461345Z","signature_b64":"AMkwbAGrid4GKugq2svFUIw/gVERYvhyg3HyEtkBiJRagDcCTcl7jWW+U54JJENXmSxZXg4O+VLHpYwqfJsOBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bcf4b9c563620441967e201b553bda39ba22a307c95f0b9fbb8ad31bd32b1e9b","last_reissued_at":"2026-05-18T01:44:29.460925Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:44:29.460925Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.5429","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":"2026-05-18T01:44:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U/ySn+qf7UIbtBAUzgmRc2D/omPUyeXZbRvPwpvIGPTgj94paRGeIEIgMS2syGlVnuI2MFLyAZKeWKJdXUZvDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T18:52:40.310987Z"},"content_sha256":"06e015c8b55ac7aeb3d61a841fed85e68b72bce88510f48bd56f7e11a2f6252f","schema_version":"1.0","event_id":"sha256:06e015c8b55ac7aeb3d61a841fed85e68b72bce88510f48bd56f7e11a2f6252f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:XT2LTRLDMICEDFT6EANVKO62HG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evidence for a Lower Value for $H_0$ from Cosmic Chronometers Data?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Chris Clarkson, Marina Seikel, Vinicius C. Busti","submitted_at":"2014-02-21T21:24:00Z","abstract_excerpt":"An intriguing discrepancy emerging in the concordance model of cosmology is the tension between the locally measured value of the Hubble rate, and the 'global' value inferred from the cosmic microwave background (CMB). This could be due to systematic uncertainties when measuring $H_0$ locally, or it could be that we live in a highly unlikely Hubble bubble, or other exotic scenarios. We point out that the global $H_0$ can be found by extrapolating $H(z)$ data points at high-$z$ down to $z=0$. By doing this in a Bayesian non-parametric way we can find a model-independent value for $H_0$. We appl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.5429","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":"2026-05-18T01:44:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OeKDzV1bY8UBUdEyGfdlRz17biz0lgu/t6EozCoCx9Boxw1ZTGnpoZh/RWYFYLZ0TaaaBLhsWCgUJjik2SSPBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T18:52:40.311357Z"},"content_sha256":"3670e08366319565b310da03822bd7d72cba13badc62305d92ad621750a42e81","schema_version":"1.0","event_id":"sha256:3670e08366319565b310da03822bd7d72cba13badc62305d92ad621750a42e81"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XT2LTRLDMICEDFT6EANVKO62HG/bundle.json","state_url":"https://pith.science/pith/XT2LTRLDMICEDFT6EANVKO62HG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XT2LTRLDMICEDFT6EANVKO62HG/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":"2026-06-05T18:52:40Z","links":{"resolver":"https://pith.science/pith/XT2LTRLDMICEDFT6EANVKO62HG","bundle":"https://pith.science/pith/XT2LTRLDMICEDFT6EANVKO62HG/bundle.json","state":"https://pith.science/pith/XT2LTRLDMICEDFT6EANVKO62HG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XT2LTRLDMICEDFT6EANVKO62HG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:XT2LTRLDMICEDFT6EANVKO62HG","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":"61f2eac52b402e819832671742468caafc9b96a75cc1a1d9e344582dae63465c","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-02-21T21:24:00Z","title_canon_sha256":"dfdd156446bd4248b8c5701e75d95a93f6163c77931712edb11685d2718d88d2"},"schema_version":"1.0","source":{"id":"1402.5429","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.5429","created_at":"2026-05-18T01:44:29Z"},{"alias_kind":"arxiv_version","alias_value":"1402.5429v1","created_at":"2026-05-18T01:44:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.5429","created_at":"2026-05-18T01:44:29Z"},{"alias_kind":"pith_short_12","alias_value":"XT2LTRLDMICE","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XT2LTRLDMICEDFT6","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XT2LTRLD","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:3670e08366319565b310da03822bd7d72cba13badc62305d92ad621750a42e81","target":"graph","created_at":"2026-05-18T01:44:29Z","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":"An intriguing discrepancy emerging in the concordance model of cosmology is the tension between the locally measured value of the Hubble rate, and the 'global' value inferred from the cosmic microwave background (CMB). This could be due to systematic uncertainties when measuring $H_0$ locally, or it could be that we live in a highly unlikely Hubble bubble, or other exotic scenarios. We point out that the global $H_0$ can be found by extrapolating $H(z)$ data points at high-$z$ down to $z=0$. By doing this in a Bayesian non-parametric way we can find a model-independent value for $H_0$. We appl","authors_text":"Chris Clarkson, Marina Seikel, Vinicius C. Busti","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-02-21T21:24:00Z","title":"Evidence for a Lower Value for $H_0$ from Cosmic Chronometers Data?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.5429","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":"sha256:06e015c8b55ac7aeb3d61a841fed85e68b72bce88510f48bd56f7e11a2f6252f","target":"record","created_at":"2026-05-18T01:44:29Z","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":"61f2eac52b402e819832671742468caafc9b96a75cc1a1d9e344582dae63465c","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-02-21T21:24:00Z","title_canon_sha256":"dfdd156446bd4248b8c5701e75d95a93f6163c77931712edb11685d2718d88d2"},"schema_version":"1.0","source":{"id":"1402.5429","kind":"arxiv","version":1}},"canonical_sha256":"bcf4b9c563620441967e201b553bda39ba22a307c95f0b9fbb8ad31bd32b1e9b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bcf4b9c563620441967e201b553bda39ba22a307c95f0b9fbb8ad31bd32b1e9b","first_computed_at":"2026-05-18T01:44:29.460925Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:44:29.460925Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AMkwbAGrid4GKugq2svFUIw/gVERYvhyg3HyEtkBiJRagDcCTcl7jWW+U54JJENXmSxZXg4O+VLHpYwqfJsOBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:44:29.461345Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.5429","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:06e015c8b55ac7aeb3d61a841fed85e68b72bce88510f48bd56f7e11a2f6252f","sha256:3670e08366319565b310da03822bd7d72cba13badc62305d92ad621750a42e81"],"state_sha256":"d594c91404797b3c663a8721fd4fc9e84d1f611f8cc729374a020a2da3a9b121"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DBT5bXxtRieg7Typ8eHuAxE8iG0rPM8nlFue+Cla8fLy67yQTSBJJ8acntd5yg071fHlPZjfD7qjm1dezQeUDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T18:52:40.313697Z","bundle_sha256":"fe36e2aedb8afca079b8425232bac0dea910117d94a67191fe8619ba8c439163"}}