{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:SAWWLPCUPCUOR44ETXRZBPWXC5","short_pith_number":"pith:SAWWLPCU","canonical_record":{"source":{"id":"1805.08731","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-05-22T16:41:48Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"8fce405dd012e2e69209cbd8ef2c4708c77907885146eb739a6be4289bf7f79f","abstract_canon_sha256":"989818223dbcc04496bff416f6cb4c44f60d18c4f71567855222c47b73eedf3c"},"schema_version":"1.0"},"canonical_sha256":"902d65bc5478a8e8f3849de390bed71746f608ff5131c5c64413fbe5a8f4d0ff","source":{"kind":"arxiv","id":"1805.08731","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.08731","created_at":"2026-05-18T00:10:31Z"},{"alias_kind":"arxiv_version","alias_value":"1805.08731v3","created_at":"2026-05-18T00:10:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.08731","created_at":"2026-05-18T00:10:31Z"},{"alias_kind":"pith_short_12","alias_value":"SAWWLPCUPCUO","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"SAWWLPCUPCUOR44E","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"SAWWLPCU","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:SAWWLPCUPCUOR44ETXRZBPWXC5","target":"record","payload":{"canonical_record":{"source":{"id":"1805.08731","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-05-22T16:41:48Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"8fce405dd012e2e69209cbd8ef2c4708c77907885146eb739a6be4289bf7f79f","abstract_canon_sha256":"989818223dbcc04496bff416f6cb4c44f60d18c4f71567855222c47b73eedf3c"},"schema_version":"1.0"},"canonical_sha256":"902d65bc5478a8e8f3849de390bed71746f608ff5131c5c64413fbe5a8f4d0ff","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:10:31.132086Z","signature_b64":"EJEMDDLUFw9fBG6lgdYfQG+MQG1S7Y37fxLJf/gsGR0kTyx4Zmtj29MF16XLApuw56dFv7IkAP5XbcHlGmLQDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"902d65bc5478a8e8f3849de390bed71746f608ff5131c5c64413fbe5a8f4d0ff","last_reissued_at":"2026-05-18T00:10:31.131396Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:10:31.131396Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.08731","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":"2026-05-18T00:10:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qbE84pMR9pAEKU40hAwGbbqdKLWvJ3XKKJFtMEdEG8xpseXRTcY344GRelyHmnFKDDJWnBkD6ue5+qjx6HTkCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:23:21.028413Z"},"content_sha256":"92593d10cbab00e947d60ffcd444f04b5832d4cd890abd77dcdf9ab11f20f598","schema_version":"1.0","event_id":"sha256:92593d10cbab00e947d60ffcd444f04b5832d4cd890abd77dcdf9ab11f20f598"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:SAWWLPCUPCUOR44ETXRZBPWXC5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modified gravitational-wave propagation and standard sirens","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Enis Belgacem, Michele Maggiore, Stefano Foffa, Yves Dirian","submitted_at":"2018-05-22T16:41:48Z","abstract_excerpt":"Studies of dark energy at advanced gravitational-wave (GW) interferometers normally focus on the dark energy equation of state $w_{\\rm DE}(z)$. However, modified gravity theories that predict a non-trivial dark energy equation of state generically also predict deviations from general relativity in the propagation of GWs across cosmological distances, even in theories where the speed of gravity is equal to $c$. We find that, in generic modified gravity models, the effect of modified GW propagation dominates over that of $w_{\\rm DE}(z)$, making modified GW propagation a crucial observable for da"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.08731","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":"2026-05-18T00:10:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C26Lt88RHq6lnERG+UVVVZgYq/vDE/EehlExKpR6MMONla2jw9j5JGJ7oakeNsPbJIkM4ajlGFhiDbNGke9NBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:23:21.029148Z"},"content_sha256":"d1bd93615345d5ec76c95f0ebf12f0375f4181e49bf5f482c7ee40d10ab8ec6d","schema_version":"1.0","event_id":"sha256:d1bd93615345d5ec76c95f0ebf12f0375f4181e49bf5f482c7ee40d10ab8ec6d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SAWWLPCUPCUOR44ETXRZBPWXC5/bundle.json","state_url":"https://pith.science/pith/SAWWLPCUPCUOR44ETXRZBPWXC5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SAWWLPCUPCUOR44ETXRZBPWXC5/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":"2026-05-30T22:23:21Z","links":{"resolver":"https://pith.science/pith/SAWWLPCUPCUOR44ETXRZBPWXC5","bundle":"https://pith.science/pith/SAWWLPCUPCUOR44ETXRZBPWXC5/bundle.json","state":"https://pith.science/pith/SAWWLPCUPCUOR44ETXRZBPWXC5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SAWWLPCUPCUOR44ETXRZBPWXC5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SAWWLPCUPCUOR44ETXRZBPWXC5","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":"989818223dbcc04496bff416f6cb4c44f60d18c4f71567855222c47b73eedf3c","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-05-22T16:41:48Z","title_canon_sha256":"8fce405dd012e2e69209cbd8ef2c4708c77907885146eb739a6be4289bf7f79f"},"schema_version":"1.0","source":{"id":"1805.08731","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.08731","created_at":"2026-05-18T00:10:31Z"},{"alias_kind":"arxiv_version","alias_value":"1805.08731v3","created_at":"2026-05-18T00:10:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.08731","created_at":"2026-05-18T00:10:31Z"},{"alias_kind":"pith_short_12","alias_value":"SAWWLPCUPCUO","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"SAWWLPCUPCUOR44E","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"SAWWLPCU","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:d1bd93615345d5ec76c95f0ebf12f0375f4181e49bf5f482c7ee40d10ab8ec6d","target":"graph","created_at":"2026-05-18T00:10:31Z","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":"Studies of dark energy at advanced gravitational-wave (GW) interferometers normally focus on the dark energy equation of state $w_{\\rm DE}(z)$. However, modified gravity theories that predict a non-trivial dark energy equation of state generically also predict deviations from general relativity in the propagation of GWs across cosmological distances, even in theories where the speed of gravity is equal to $c$. We find that, in generic modified gravity models, the effect of modified GW propagation dominates over that of $w_{\\rm DE}(z)$, making modified GW propagation a crucial observable for da","authors_text":"Enis Belgacem, Michele Maggiore, Stefano Foffa, Yves Dirian","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-05-22T16:41:48Z","title":"Modified gravitational-wave propagation and standard sirens"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.08731","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":"sha256:92593d10cbab00e947d60ffcd444f04b5832d4cd890abd77dcdf9ab11f20f598","target":"record","created_at":"2026-05-18T00:10:31Z","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":"989818223dbcc04496bff416f6cb4c44f60d18c4f71567855222c47b73eedf3c","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-05-22T16:41:48Z","title_canon_sha256":"8fce405dd012e2e69209cbd8ef2c4708c77907885146eb739a6be4289bf7f79f"},"schema_version":"1.0","source":{"id":"1805.08731","kind":"arxiv","version":3}},"canonical_sha256":"902d65bc5478a8e8f3849de390bed71746f608ff5131c5c64413fbe5a8f4d0ff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"902d65bc5478a8e8f3849de390bed71746f608ff5131c5c64413fbe5a8f4d0ff","first_computed_at":"2026-05-18T00:10:31.131396Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:31.131396Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EJEMDDLUFw9fBG6lgdYfQG+MQG1S7Y37fxLJf/gsGR0kTyx4Zmtj29MF16XLApuw56dFv7IkAP5XbcHlGmLQDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:31.132086Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.08731","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:92593d10cbab00e947d60ffcd444f04b5832d4cd890abd77dcdf9ab11f20f598","sha256:d1bd93615345d5ec76c95f0ebf12f0375f4181e49bf5f482c7ee40d10ab8ec6d"],"state_sha256":"73747fec2128679b1375bdf034d17d194e60fbe0aa41eb8bc653488a5e8d708d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"790AA8udTMh0HT6GG7g7tpUfNtqHx556opC6+wY9rApTiDki6IIrlkjFTNTrmXqr/BkyldWFZ36aSQUYZrykCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T22:23:21.032892Z","bundle_sha256":"0fb661e8c0df032cc06cb41b1691be2b3c7cdd89664aa492935ce02ec0a8a367"}}