{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:TG74IB4XAR3BYKYK3O7QN3IIUW","short_pith_number":"pith:TG74IB4X","canonical_record":{"source":{"id":"1908.04268","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-08T07:48:14Z","cross_cats_sorted":[],"title_canon_sha256":"1d6eb8bc9d1b14a4751919d91848ab367c3d2dfbd6364d193dbaee787ba7d0ab","abstract_canon_sha256":"501ea157892a1f1942a503d1d10cda0abc5912edc708debc1e910ccee8de743e"},"schema_version":"1.0"},"canonical_sha256":"99bfc4079704761c2b0adbbf06ed08a5aae5553da6a1048d75ae870a3562aacf","source":{"kind":"arxiv","id":"1908.04268","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.04268","created_at":"2026-07-05T00:04:10Z"},{"alias_kind":"arxiv_version","alias_value":"1908.04268v2","created_at":"2026-07-05T00:04:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.04268","created_at":"2026-07-05T00:04:10Z"},{"alias_kind":"pith_short_12","alias_value":"TG74IB4XAR3B","created_at":"2026-07-05T00:04:10Z"},{"alias_kind":"pith_short_16","alias_value":"TG74IB4XAR3BYKYK","created_at":"2026-07-05T00:04:10Z"},{"alias_kind":"pith_short_8","alias_value":"TG74IB4X","created_at":"2026-07-05T00:04:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:TG74IB4XAR3BYKYK3O7QN3IIUW","target":"record","payload":{"canonical_record":{"source":{"id":"1908.04268","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-08T07:48:14Z","cross_cats_sorted":[],"title_canon_sha256":"1d6eb8bc9d1b14a4751919d91848ab367c3d2dfbd6364d193dbaee787ba7d0ab","abstract_canon_sha256":"501ea157892a1f1942a503d1d10cda0abc5912edc708debc1e910ccee8de743e"},"schema_version":"1.0"},"canonical_sha256":"99bfc4079704761c2b0adbbf06ed08a5aae5553da6a1048d75ae870a3562aacf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:04:10.174435Z","signature_b64":"epDyvAinunJM+HIR4dTnwuBtdE/ga87y9tLb3uwcgOPlw3GGBgTYTC0kfKle94q0JBwUkiKLeyURhuxwx+aSDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"99bfc4079704761c2b0adbbf06ed08a5aae5553da6a1048d75ae870a3562aacf","last_reissued_at":"2026-07-05T00:04:10.174019Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:04:10.174019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.04268","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":"2026-07-05T00:04:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oNiRDk46qFCFUkFTVjxgOGzJOhqQZy1TP1eyLuobUvoIqS5N6mdqTOF8r++1Iz+Y0ETqzyIbsxft5Q2GXzw5Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T23:38:09.122588Z"},"content_sha256":"52802186e5c3b2128883dfc665c0a18734872847130963989cc306f06f2e3d80","schema_version":"1.0","event_id":"sha256:52802186e5c3b2128883dfc665c0a18734872847130963989cc306f06f2e3d80"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:TG74IB4XAR3BYKYK3O7QN3IIUW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Threshold Drop in Accretion Density if Dark Energy is Accreting onto a Supermassive Black Hole","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Ritabrata Biswas, Sandip Dutta","submitted_at":"2019-08-08T07:48:14Z","abstract_excerpt":"Galactic structures are supposed to be formed out of dark matter clustering. Some examples of supermassive black holes in the central regions of high redshift galaxies say that the concerned supermassive black holes have completed their constructions in a time less than it generally should be. To justify such discrepancies, we are forced to model about existences of black hole mimickers and exotic phenomena acting near the supermassive black holes. Motivated by these we study the natures of exotic matters, especially dark energy near the black holes. We choose modified Chaplygin gas as dark en"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.04268","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.04268/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":"2026-07-05T00:04:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p5pgjxQaHTl+pSfFnI4uyZXvUl2TdrVlYJpJP3MXW1d/PZUmiu3PDcVz3x98c7Vj8pfGmdOcU9+8Nuhk2zSoCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T23:38:09.123349Z"},"content_sha256":"699205b7c5d28e96fb85fc5285f82bbdb188d01f3e447aa9b6de6179d43bd105","schema_version":"1.0","event_id":"sha256:699205b7c5d28e96fb85fc5285f82bbdb188d01f3e447aa9b6de6179d43bd105"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TG74IB4XAR3BYKYK3O7QN3IIUW/bundle.json","state_url":"https://pith.science/pith/TG74IB4XAR3BYKYK3O7QN3IIUW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TG74IB4XAR3BYKYK3O7QN3IIUW/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":"2026-08-15T23:38:09Z","links":{"resolver":"https://pith.science/pith/TG74IB4XAR3BYKYK3O7QN3IIUW","bundle":"https://pith.science/pith/TG74IB4XAR3BYKYK3O7QN3IIUW/bundle.json","state":"https://pith.science/pith/TG74IB4XAR3BYKYK3O7QN3IIUW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TG74IB4XAR3BYKYK3O7QN3IIUW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:TG74IB4XAR3BYKYK3O7QN3IIUW","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":"501ea157892a1f1942a503d1d10cda0abc5912edc708debc1e910ccee8de743e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-08T07:48:14Z","title_canon_sha256":"1d6eb8bc9d1b14a4751919d91848ab367c3d2dfbd6364d193dbaee787ba7d0ab"},"schema_version":"1.0","source":{"id":"1908.04268","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.04268","created_at":"2026-07-05T00:04:10Z"},{"alias_kind":"arxiv_version","alias_value":"1908.04268v2","created_at":"2026-07-05T00:04:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.04268","created_at":"2026-07-05T00:04:10Z"},{"alias_kind":"pith_short_12","alias_value":"TG74IB4XAR3B","created_at":"2026-07-05T00:04:10Z"},{"alias_kind":"pith_short_16","alias_value":"TG74IB4XAR3BYKYK","created_at":"2026-07-05T00:04:10Z"},{"alias_kind":"pith_short_8","alias_value":"TG74IB4X","created_at":"2026-07-05T00:04:10Z"}],"graph_snapshots":[{"event_id":"sha256:699205b7c5d28e96fb85fc5285f82bbdb188d01f3e447aa9b6de6179d43bd105","target":"graph","created_at":"2026-07-05T00:04:10Z","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/1908.04268/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Galactic structures are supposed to be formed out of dark matter clustering. Some examples of supermassive black holes in the central regions of high redshift galaxies say that the concerned supermassive black holes have completed their constructions in a time less than it generally should be. To justify such discrepancies, we are forced to model about existences of black hole mimickers and exotic phenomena acting near the supermassive black holes. Motivated by these we study the natures of exotic matters, especially dark energy near the black holes. We choose modified Chaplygin gas as dark en","authors_text":"Ritabrata Biswas, Sandip Dutta","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-08T07:48:14Z","title":"Threshold Drop in Accretion Density if Dark Energy is Accreting onto a Supermassive Black Hole"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.04268","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":"sha256:52802186e5c3b2128883dfc665c0a18734872847130963989cc306f06f2e3d80","target":"record","created_at":"2026-07-05T00:04:10Z","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":"501ea157892a1f1942a503d1d10cda0abc5912edc708debc1e910ccee8de743e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-08T07:48:14Z","title_canon_sha256":"1d6eb8bc9d1b14a4751919d91848ab367c3d2dfbd6364d193dbaee787ba7d0ab"},"schema_version":"1.0","source":{"id":"1908.04268","kind":"arxiv","version":2}},"canonical_sha256":"99bfc4079704761c2b0adbbf06ed08a5aae5553da6a1048d75ae870a3562aacf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"99bfc4079704761c2b0adbbf06ed08a5aae5553da6a1048d75ae870a3562aacf","first_computed_at":"2026-07-05T00:04:10.174019Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:04:10.174019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"epDyvAinunJM+HIR4dTnwuBtdE/ga87y9tLb3uwcgOPlw3GGBgTYTC0kfKle94q0JBwUkiKLeyURhuxwx+aSDA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:04:10.174435Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.04268","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:52802186e5c3b2128883dfc665c0a18734872847130963989cc306f06f2e3d80","sha256:699205b7c5d28e96fb85fc5285f82bbdb188d01f3e447aa9b6de6179d43bd105"],"state_sha256":"e8719b2a9e529a25d91e7b7c508b6ebe70e05e743abafc4f6dc2c3e9c8e17e11"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+jzQqguaqwNbb3Z9+KcCBgwPoB1vhoHPl+aCSKW8KBvD/mivTXTTn/amoKlPzDM7h2NiP78OhAAr6936bFdaDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T23:38:09.127272Z","bundle_sha256":"706bb3c7ef9a0ea1bb5c024429b56933be45f225a83558947a83071447a9f3c7"}}