{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:7NGEC4P6GG6AVCIUFHSB2ZYTXW","short_pith_number":"pith:7NGEC4P6","canonical_record":{"source":{"id":"1704.02425","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-04-08T02:34:07Z","cross_cats_sorted":["astro-ph.GA","gr-qc","hep-ph","hep-th"],"title_canon_sha256":"f0af5bc8f65399ed6f020b524ca81084b269d04d347a34c99deee2f726ca8b9a","abstract_canon_sha256":"f2c45b13b66d1634dcd0ba9b64d5093cce9bccd843d90b49963b4dccb1e07666"},"schema_version":"1.0"},"canonical_sha256":"fb4c4171fe31bc0a891429e41d6713bd88dde845ef3170e1fb40c973dc145c5f","source":{"kind":"arxiv","id":"1704.02425","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.02425","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"arxiv_version","alias_value":"1704.02425v2","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.02425","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"pith_short_12","alias_value":"7NGEC4P6GG6A","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7NGEC4P6GG6AVCIU","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7NGEC4P6","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:7NGEC4P6GG6AVCIUFHSB2ZYTXW","target":"record","payload":{"canonical_record":{"source":{"id":"1704.02425","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-04-08T02:34:07Z","cross_cats_sorted":["astro-ph.GA","gr-qc","hep-ph","hep-th"],"title_canon_sha256":"f0af5bc8f65399ed6f020b524ca81084b269d04d347a34c99deee2f726ca8b9a","abstract_canon_sha256":"f2c45b13b66d1634dcd0ba9b64d5093cce9bccd843d90b49963b4dccb1e07666"},"schema_version":"1.0"},"canonical_sha256":"fb4c4171fe31bc0a891429e41d6713bd88dde845ef3170e1fb40c973dc145c5f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:55.735033Z","signature_b64":"9zRXA/LFDDFHYgaxZ4jxaqn649Vkau3o1y1WBcAQ45pvwkdn/GTFb+M6EyIG1EohH9dr8bAMb+o2/5M52TvlCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fb4c4171fe31bc0a891429e41d6713bd88dde845ef3170e1fb40c973dc145c5f","last_reissued_at":"2026-05-18T00:38:55.734384Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:55.734384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.02425","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":"2026-05-18T00:38:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zUQCGuJz/3Fc95R1XxnFHVBD6ut/N5xIwdbiVHnKdcptCCEiWtG95oltww3dNqdkcABSEkizsw+dL9aSWJLIBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:52:54.729135Z"},"content_sha256":"558c531536838e2e384cbd0833c77c9ac860e88b02bb0a405953caae564b0f1f","schema_version":"1.0","event_id":"sha256:558c531536838e2e384cbd0833c77c9ac860e88b02bb0a405953caae564b0f1f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:7NGEC4P6GG6AVCIUFHSB2ZYTXW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tests of Gravity Theories Using Supermassive Black Holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Bhuvnesh Jain, Jeremy Sakstein, Jeremy S. Heyl, Lam Hui","submitted_at":"2017-04-08T02:34:07Z","abstract_excerpt":"Scalar-tensor theories of gravity generally violate the strong equivalence principle, namely compact objects have a suppressed coupling to the scalar force, causing them to fall slower. A black hole is the extreme example where such a coupling vanishes, i.e. black hole has no scalar hair. Following earlier work, we explore observational scenarios for detecting strong equivalence principle violation, focusing on galileon gravity as an example. For galaxies in-falling towards galaxy clusters, the supermassive black hole can be offset from the galaxy center away from the direction of the cluster."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.02425","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":"2026-05-18T00:38:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fUpb1oMfmed8udaKnY8/2W+ERqz/e9T9Y05zzvjSX/iweQzOxeP1ekYbkutmDcsZpDRpdD2MmjaVYwMkwm/DAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:52:54.729835Z"},"content_sha256":"d07969c7e2efe65974a5c54c9c48ac1b171f60bca3349776d3a89233a055ab3e","schema_version":"1.0","event_id":"sha256:d07969c7e2efe65974a5c54c9c48ac1b171f60bca3349776d3a89233a055ab3e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7NGEC4P6GG6AVCIUFHSB2ZYTXW/bundle.json","state_url":"https://pith.science/pith/7NGEC4P6GG6AVCIUFHSB2ZYTXW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7NGEC4P6GG6AVCIUFHSB2ZYTXW/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":"2026-05-26T21:52:54Z","links":{"resolver":"https://pith.science/pith/7NGEC4P6GG6AVCIUFHSB2ZYTXW","bundle":"https://pith.science/pith/7NGEC4P6GG6AVCIUFHSB2ZYTXW/bundle.json","state":"https://pith.science/pith/7NGEC4P6GG6AVCIUFHSB2ZYTXW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7NGEC4P6GG6AVCIUFHSB2ZYTXW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7NGEC4P6GG6AVCIUFHSB2ZYTXW","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":"f2c45b13b66d1634dcd0ba9b64d5093cce9bccd843d90b49963b4dccb1e07666","cross_cats_sorted":["astro-ph.GA","gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-04-08T02:34:07Z","title_canon_sha256":"f0af5bc8f65399ed6f020b524ca81084b269d04d347a34c99deee2f726ca8b9a"},"schema_version":"1.0","source":{"id":"1704.02425","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.02425","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"arxiv_version","alias_value":"1704.02425v2","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.02425","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"pith_short_12","alias_value":"7NGEC4P6GG6A","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7NGEC4P6GG6AVCIU","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7NGEC4P6","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:d07969c7e2efe65974a5c54c9c48ac1b171f60bca3349776d3a89233a055ab3e","target":"graph","created_at":"2026-05-18T00:38:55Z","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":"Scalar-tensor theories of gravity generally violate the strong equivalence principle, namely compact objects have a suppressed coupling to the scalar force, causing them to fall slower. A black hole is the extreme example where such a coupling vanishes, i.e. black hole has no scalar hair. Following earlier work, we explore observational scenarios for detecting strong equivalence principle violation, focusing on galileon gravity as an example. For galaxies in-falling towards galaxy clusters, the supermassive black hole can be offset from the galaxy center away from the direction of the cluster.","authors_text":"Bhuvnesh Jain, Jeremy Sakstein, Jeremy S. Heyl, Lam Hui","cross_cats":["astro-ph.GA","gr-qc","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-04-08T02:34:07Z","title":"Tests of Gravity Theories Using Supermassive Black Holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.02425","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":"sha256:558c531536838e2e384cbd0833c77c9ac860e88b02bb0a405953caae564b0f1f","target":"record","created_at":"2026-05-18T00:38:55Z","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":"f2c45b13b66d1634dcd0ba9b64d5093cce9bccd843d90b49963b4dccb1e07666","cross_cats_sorted":["astro-ph.GA","gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-04-08T02:34:07Z","title_canon_sha256":"f0af5bc8f65399ed6f020b524ca81084b269d04d347a34c99deee2f726ca8b9a"},"schema_version":"1.0","source":{"id":"1704.02425","kind":"arxiv","version":2}},"canonical_sha256":"fb4c4171fe31bc0a891429e41d6713bd88dde845ef3170e1fb40c973dc145c5f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fb4c4171fe31bc0a891429e41d6713bd88dde845ef3170e1fb40c973dc145c5f","first_computed_at":"2026-05-18T00:38:55.734384Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:55.734384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9zRXA/LFDDFHYgaxZ4jxaqn649Vkau3o1y1WBcAQ45pvwkdn/GTFb+M6EyIG1EohH9dr8bAMb+o2/5M52TvlCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:55.735033Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.02425","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:558c531536838e2e384cbd0833c77c9ac860e88b02bb0a405953caae564b0f1f","sha256:d07969c7e2efe65974a5c54c9c48ac1b171f60bca3349776d3a89233a055ab3e"],"state_sha256":"675296bdcf49ef07cb782f65142b2b9bb2b0d7266c9ed50358298bc0b973fd83"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/BQNYFkI8hq1euFivMvS6Rw9pF4JFRzMDmf6Ov/l/7KrKsormxafSlC2+xi4VBCBVPdPsUh6ISEXuid07xFbAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T21:52:54.733532Z","bundle_sha256":"ce5d8e878c1637391651c74d80a4c51f939165ad2423b2b1cae7b9480d40eaf6"}}