{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:7WAFH7E7GQZMTN5MDFZIRVLQ7K","short_pith_number":"pith:7WAFH7E7","canonical_record":{"source":{"id":"1709.09135","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-09-26T17:13:01Z","cross_cats_sorted":[],"title_canon_sha256":"3911a5185baee249c5aec1557fbc9bbeaa5121ef5474b9f2a8b5888acd64c2e6","abstract_canon_sha256":"1dfde8620186d030df759a7823ac8d0bf9a918f03da9858d6103b5a37ecd72b0"},"schema_version":"1.0"},"canonical_sha256":"fd8053fc9f3432c9b7ac197288d570fa80d065d10648e54eae2f157a107d4bc2","source":{"kind":"arxiv","id":"1709.09135","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.09135","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"arxiv_version","alias_value":"1709.09135v2","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.09135","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"pith_short_12","alias_value":"7WAFH7E7GQZM","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7WAFH7E7GQZMTN5M","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7WAFH7E7","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:7WAFH7E7GQZMTN5MDFZIRVLQ7K","target":"record","payload":{"canonical_record":{"source":{"id":"1709.09135","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-09-26T17:13:01Z","cross_cats_sorted":[],"title_canon_sha256":"3911a5185baee249c5aec1557fbc9bbeaa5121ef5474b9f2a8b5888acd64c2e6","abstract_canon_sha256":"1dfde8620186d030df759a7823ac8d0bf9a918f03da9858d6103b5a37ecd72b0"},"schema_version":"1.0"},"canonical_sha256":"fd8053fc9f3432c9b7ac197288d570fa80d065d10648e54eae2f157a107d4bc2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:51.438659Z","signature_b64":"Zt27AbWqTDIQQMu7OgS49VWGT1p8ukklDSzVvG4qMb/vP+AbaS19gw0MyacZKiKM5IEttWhlOOvi59B6xR0oBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd8053fc9f3432c9b7ac197288d570fa80d065d10648e54eae2f157a107d4bc2","last_reissued_at":"2026-05-18T00:24:51.437674Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:51.437674Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.09135","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:24:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EhGe6pwsELRYb85RqRLZoAPm97RIYLXRfJbceQwotHf9mncGhV8RO42tentbsyFNILa1eOYq/f+5PbFS9ih1AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T04:29:19.661903Z"},"content_sha256":"bb48b9484e3b053638fb1b27d2426ecc2f74bab35f586ca631c2518c511392bb","schema_version":"1.0","event_id":"sha256:bb48b9484e3b053638fb1b27d2426ecc2f74bab35f586ca631c2518c511392bb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:7WAFH7E7GQZMTN5MDFZIRVLQ7K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A comparison of Einstein-Boltzmann solvers for testing General Relativity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Avilez-Lopez, A. Barreira, A. Silvestri, B. Bolliet, B. Hu, B. Li, C. Skordis, C. Umilt\\`a, D. Paoletti, E. Bellini, E. Calabrese, F. Finelli, F. Pace, F. Vernizzi, I. Sawicki, J. Lesgourgues, M. Ballardini, M. M. Ivanov, M. Raveri, M. Zumalac\\'arregui, N. A. Lima, N. Frusciante, P. G. Ferreira, R. A. Battye, S. Peirone, Y. Dirian, Z. Huang","submitted_at":"2017-09-26T17:13:01Z","abstract_excerpt":"We compare Einstein-Boltzmann solvers that include modifications to General Relativity and find that, for a wide range of models and parameters, they agree to a high level of precision. We look at three general purpose codes that primarily model general scalar-tensor theories, three codes that model Jordan-Brans-Dicke (JBD) gravity, a code that models f(R) gravity, a code that models covariant Galileons, a code that models Ho\\v{r}ava-Lifschitz gravity and two codes that model non-local models of gravity. Comparing predictions of the angular power spectrum of the cosmic microwave background and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.09135","kind":"arxiv","version":2},"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":"2026-05-18T00:24:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sfFOBWDV/Cz/h0umNuHcyTy0p6eaUouI5OEKM3uklC16EUGyL2lBXsm+U67B8Y/4Slk6pdP1d1ts9DIlyiSKAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T04:29:19.662582Z"},"content_sha256":"c9f79d8d5af3b98d00ed5ce172618a619c79a5eb2aab96dcd5c21d2dbd20a04e","schema_version":"1.0","event_id":"sha256:c9f79d8d5af3b98d00ed5ce172618a619c79a5eb2aab96dcd5c21d2dbd20a04e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7WAFH7E7GQZMTN5MDFZIRVLQ7K/bundle.json","state_url":"https://pith.science/pith/7WAFH7E7GQZMTN5MDFZIRVLQ7K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7WAFH7E7GQZMTN5MDFZIRVLQ7K/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":"2026-05-19T04:29:19Z","links":{"resolver":"https://pith.science/pith/7WAFH7E7GQZMTN5MDFZIRVLQ7K","bundle":"https://pith.science/pith/7WAFH7E7GQZMTN5MDFZIRVLQ7K/bundle.json","state":"https://pith.science/pith/7WAFH7E7GQZMTN5MDFZIRVLQ7K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7WAFH7E7GQZMTN5MDFZIRVLQ7K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7WAFH7E7GQZMTN5MDFZIRVLQ7K","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":"1dfde8620186d030df759a7823ac8d0bf9a918f03da9858d6103b5a37ecd72b0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-09-26T17:13:01Z","title_canon_sha256":"3911a5185baee249c5aec1557fbc9bbeaa5121ef5474b9f2a8b5888acd64c2e6"},"schema_version":"1.0","source":{"id":"1709.09135","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.09135","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"arxiv_version","alias_value":"1709.09135v2","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.09135","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"pith_short_12","alias_value":"7WAFH7E7GQZM","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7WAFH7E7GQZMTN5M","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7WAFH7E7","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:c9f79d8d5af3b98d00ed5ce172618a619c79a5eb2aab96dcd5c21d2dbd20a04e","target":"graph","created_at":"2026-05-18T00:24:51Z","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":"We compare Einstein-Boltzmann solvers that include modifications to General Relativity and find that, for a wide range of models and parameters, they agree to a high level of precision. We look at three general purpose codes that primarily model general scalar-tensor theories, three codes that model Jordan-Brans-Dicke (JBD) gravity, a code that models f(R) gravity, a code that models covariant Galileons, a code that models Ho\\v{r}ava-Lifschitz gravity and two codes that model non-local models of gravity. Comparing predictions of the angular power spectrum of the cosmic microwave background and","authors_text":"A. Avilez-Lopez, A. Barreira, A. Silvestri, B. Bolliet, B. Hu, B. Li, C. Skordis, C. Umilt\\`a, D. Paoletti, E. Bellini, E. Calabrese, F. Finelli, F. Pace, F. Vernizzi, I. Sawicki, J. Lesgourgues, M. Ballardini, M. M. Ivanov, M. Raveri, M. Zumalac\\'arregui, N. A. Lima, N. Frusciante, P. G. Ferreira, R. A. Battye, S. Peirone, Y. Dirian, Z. Huang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-09-26T17:13:01Z","title":"A comparison of Einstein-Boltzmann solvers for testing General Relativity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.09135","kind":"arxiv","version":2},"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:bb48b9484e3b053638fb1b27d2426ecc2f74bab35f586ca631c2518c511392bb","target":"record","created_at":"2026-05-18T00:24:51Z","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":"1dfde8620186d030df759a7823ac8d0bf9a918f03da9858d6103b5a37ecd72b0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-09-26T17:13:01Z","title_canon_sha256":"3911a5185baee249c5aec1557fbc9bbeaa5121ef5474b9f2a8b5888acd64c2e6"},"schema_version":"1.0","source":{"id":"1709.09135","kind":"arxiv","version":2}},"canonical_sha256":"fd8053fc9f3432c9b7ac197288d570fa80d065d10648e54eae2f157a107d4bc2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd8053fc9f3432c9b7ac197288d570fa80d065d10648e54eae2f157a107d4bc2","first_computed_at":"2026-05-18T00:24:51.437674Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:51.437674Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Zt27AbWqTDIQQMu7OgS49VWGT1p8ukklDSzVvG4qMb/vP+AbaS19gw0MyacZKiKM5IEttWhlOOvi59B6xR0oBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:51.438659Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.09135","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bb48b9484e3b053638fb1b27d2426ecc2f74bab35f586ca631c2518c511392bb","sha256:c9f79d8d5af3b98d00ed5ce172618a619c79a5eb2aab96dcd5c21d2dbd20a04e"],"state_sha256":"29680f75a258341328b7c676229811ca6d1c34a2383e7fd94b28fc23d072357f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yXgCxgFODTvgJDcRVPgLF/+hAuVeedVjxnJFi2ZbD3177T/XEuD94Zs00IZLa0x1Zymmj43eoVxxaEQJD6pGBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T04:29:19.664920Z","bundle_sha256":"340bd77f64ba5487d70972df47ceebe7a1d59fd36ed76c115f86a4b0f2d0b2e6"}}