{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:WADEC3QIJUCDJRBSKE4P2BURO6","short_pith_number":"pith:WADEC3QI","canonical_record":{"source":{"id":"2608.04005","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-08-04T17:59:09Z","cross_cats_sorted":["astro-ph.IM","gr-qc"],"title_canon_sha256":"5c33b231a32cecc81e7175eae9f36918899eb5f69fe07898d981a5299d2f2c41","abstract_canon_sha256":"577617f0df2fbedf5159f19666f42023ceff609084daf23c3eb0c35ae51e9025"},"schema_version":"1.0"},"canonical_sha256":"b006416e084d0434c4325138fd069177b365a746e8ab3731515efcfccb1bf466","source":{"kind":"arxiv","id":"2608.04005","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.04005","created_at":"2026-08-05T01:37:41Z"},{"alias_kind":"arxiv_version","alias_value":"2608.04005v1","created_at":"2026-08-05T01:37:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.04005","created_at":"2026-08-05T01:37:41Z"},{"alias_kind":"pith_short_12","alias_value":"WADEC3QIJUCD","created_at":"2026-08-05T01:37:41Z"},{"alias_kind":"pith_short_16","alias_value":"WADEC3QIJUCDJRBS","created_at":"2026-08-05T01:37:41Z"},{"alias_kind":"pith_short_8","alias_value":"WADEC3QI","created_at":"2026-08-05T01:37:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:WADEC3QIJUCDJRBSKE4P2BURO6","target":"record","payload":{"canonical_record":{"source":{"id":"2608.04005","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-08-04T17:59:09Z","cross_cats_sorted":["astro-ph.IM","gr-qc"],"title_canon_sha256":"5c33b231a32cecc81e7175eae9f36918899eb5f69fe07898d981a5299d2f2c41","abstract_canon_sha256":"577617f0df2fbedf5159f19666f42023ceff609084daf23c3eb0c35ae51e9025"},"schema_version":"1.0"},"canonical_sha256":"b006416e084d0434c4325138fd069177b365a746e8ab3731515efcfccb1bf466","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-05T01:37:41.005123Z","signature_b64":"fxLmztsMzXEFfUj4no9hzbpzRZlwXpZ1bhv6gAsGzsevbuR8LtjIXvC1YpaccJb39CxVQgLAXMcZZOzaFIyIBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b006416e084d0434c4325138fd069177b365a746e8ab3731515efcfccb1bf466","last_reissued_at":"2026-08-05T01:37:41.003676Z","signature_status":"signed_v1","first_computed_at":"2026-08-05T01:37:41.003676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.04005","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":"2026-08-05T01:37:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+XnXp2Zq+TMJD7uer9xLxew9rs3TW4zPhNqVjKvWIdb7d8noB76brZo5XZ5sCWHiqz2jQyyEYBj2J7ubAanUAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T23:36:31.372194Z"},"content_sha256":"f9171e449c4b96a3e404f257fe55d4e5309e7cf12c83e18c7a45e6c9c2eda50e","schema_version":"1.0","event_id":"sha256:f9171e449c4b96a3e404f257fe55d4e5309e7cf12c83e18c7a45e6c9c2eda50e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:WADEC3QIJUCDJRBSKE4P2BURO6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmology in the Einstein Telescope era: comparing traditional and simulation-based methods for population inference","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Davide Sciotti, Giovanni Antinozzi, Guillermo Franco Abell\\'an, Matteo Martinelli","submitted_at":"2026-08-04T17:59:09Z","abstract_excerpt":"The next generation of gravitational wave detectors, such as the Einstein Telescope (ET), will observe orders of magnitude more binary black hole mergers than current facilities. Most of these events will lack an electromagnetic counterpart, also known as dark siren events, yet will still enable percent-level cosmological constraints. However, the likelihood traditionally used in Hierarchical Bayesian Inference (HBI) for population-level analyses becomes computationally prohibitive as the size of dark siren catalogues and population parameters grow. In this work we compare HBI against simulati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.04005","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2608.04005/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-08-05T01:37:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DDRfQ76yYlPqd5BEZAuNdhSN4znXq18oLGZK6sfNnwtBSMssRwgtOk4LSE7H7y69XP6tpN9Su5fQuWl6hdicBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T23:36:31.372712Z"},"content_sha256":"4b21cb5eed4dea14b8ccf58accc2c1f982f5d8d6816ed0c403edf80b28827a7b","schema_version":"1.0","event_id":"sha256:4b21cb5eed4dea14b8ccf58accc2c1f982f5d8d6816ed0c403edf80b28827a7b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WADEC3QIJUCDJRBSKE4P2BURO6/bundle.json","state_url":"https://pith.science/pith/WADEC3QIJUCDJRBSKE4P2BURO6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WADEC3QIJUCDJRBSKE4P2BURO6/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":"2026-08-15T23:36:31Z","links":{"resolver":"https://pith.science/pith/WADEC3QIJUCDJRBSKE4P2BURO6","bundle":"https://pith.science/pith/WADEC3QIJUCDJRBSKE4P2BURO6/bundle.json","state":"https://pith.science/pith/WADEC3QIJUCDJRBSKE4P2BURO6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WADEC3QIJUCDJRBSKE4P2BURO6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:WADEC3QIJUCDJRBSKE4P2BURO6","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":"577617f0df2fbedf5159f19666f42023ceff609084daf23c3eb0c35ae51e9025","cross_cats_sorted":["astro-ph.IM","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-08-04T17:59:09Z","title_canon_sha256":"5c33b231a32cecc81e7175eae9f36918899eb5f69fe07898d981a5299d2f2c41"},"schema_version":"1.0","source":{"id":"2608.04005","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.04005","created_at":"2026-08-05T01:37:41Z"},{"alias_kind":"arxiv_version","alias_value":"2608.04005v1","created_at":"2026-08-05T01:37:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.04005","created_at":"2026-08-05T01:37:41Z"},{"alias_kind":"pith_short_12","alias_value":"WADEC3QIJUCD","created_at":"2026-08-05T01:37:41Z"},{"alias_kind":"pith_short_16","alias_value":"WADEC3QIJUCDJRBS","created_at":"2026-08-05T01:37:41Z"},{"alias_kind":"pith_short_8","alias_value":"WADEC3QI","created_at":"2026-08-05T01:37:41Z"}],"graph_snapshots":[{"event_id":"sha256:4b21cb5eed4dea14b8ccf58accc2c1f982f5d8d6816ed0c403edf80b28827a7b","target":"graph","created_at":"2026-08-05T01:37:41Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2608.04005/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The next generation of gravitational wave detectors, such as the Einstein Telescope (ET), will observe orders of magnitude more binary black hole mergers than current facilities. Most of these events will lack an electromagnetic counterpart, also known as dark siren events, yet will still enable percent-level cosmological constraints. However, the likelihood traditionally used in Hierarchical Bayesian Inference (HBI) for population-level analyses becomes computationally prohibitive as the size of dark siren catalogues and population parameters grow. In this work we compare HBI against simulati","authors_text":"Davide Sciotti, Giovanni Antinozzi, Guillermo Franco Abell\\'an, Matteo Martinelli","cross_cats":["astro-ph.IM","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-08-04T17:59:09Z","title":"Cosmology in the Einstein Telescope era: comparing traditional and simulation-based methods for population inference"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.04005","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:f9171e449c4b96a3e404f257fe55d4e5309e7cf12c83e18c7a45e6c9c2eda50e","target":"record","created_at":"2026-08-05T01:37:41Z","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":"577617f0df2fbedf5159f19666f42023ceff609084daf23c3eb0c35ae51e9025","cross_cats_sorted":["astro-ph.IM","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-08-04T17:59:09Z","title_canon_sha256":"5c33b231a32cecc81e7175eae9f36918899eb5f69fe07898d981a5299d2f2c41"},"schema_version":"1.0","source":{"id":"2608.04005","kind":"arxiv","version":1}},"canonical_sha256":"b006416e084d0434c4325138fd069177b365a746e8ab3731515efcfccb1bf466","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b006416e084d0434c4325138fd069177b365a746e8ab3731515efcfccb1bf466","first_computed_at":"2026-08-05T01:37:41.003676Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-05T01:37:41.003676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fxLmztsMzXEFfUj4no9hzbpzRZlwXpZ1bhv6gAsGzsevbuR8LtjIXvC1YpaccJb39CxVQgLAXMcZZOzaFIyIBw==","signature_status":"signed_v1","signed_at":"2026-08-05T01:37:41.005123Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.04005","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f9171e449c4b96a3e404f257fe55d4e5309e7cf12c83e18c7a45e6c9c2eda50e","sha256:4b21cb5eed4dea14b8ccf58accc2c1f982f5d8d6816ed0c403edf80b28827a7b"],"state_sha256":"0ca7d9d65c8a61309599bc596df56bbe0836ab4e398ac5630091c7c4fc2be791"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8gOlxIglECV5p0Vlz2UngpajOpGljo6g8ZxcoGedlrfT8SxnTX35/Tr05ZiDwKs94vv6Vsi7Ze5k4DBfGG87Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T23:36:31.377714Z","bundle_sha256":"4b7bda724a50a64cd6c3eac93b26b539a7ed8561d2a7fb42f41b3feac448e560"}}