{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:5RUIUGMIBLVPV6PBNRW6NIDCMA","short_pith_number":"pith:5RUIUGMI","canonical_record":{"source":{"id":"2105.11041","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2021-05-23T23:20:31Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"ddd958f75dc0b280a83eb49a813f755bf9710098133fc864ed5144f39141a821","abstract_canon_sha256":"fdc32e06dc1f320f5316d09cf63bc15bde4a16c06c6ccba65b8be1fed8d705c9"},"schema_version":"1.0"},"canonical_sha256":"ec688a19880aeafaf9e16c6de6a062601b211f08a5ff95aaccd769f3b77d68ba","source":{"kind":"arxiv","id":"2105.11041","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.11041","created_at":"2026-07-05T03:02:54Z"},{"alias_kind":"arxiv_version","alias_value":"2105.11041v2","created_at":"2026-07-05T03:02:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.11041","created_at":"2026-07-05T03:02:54Z"},{"alias_kind":"pith_short_12","alias_value":"5RUIUGMIBLVP","created_at":"2026-07-05T03:02:54Z"},{"alias_kind":"pith_short_16","alias_value":"5RUIUGMIBLVPV6PB","created_at":"2026-07-05T03:02:54Z"},{"alias_kind":"pith_short_8","alias_value":"5RUIUGMI","created_at":"2026-07-05T03:02:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:5RUIUGMIBLVPV6PBNRW6NIDCMA","target":"record","payload":{"canonical_record":{"source":{"id":"2105.11041","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2021-05-23T23:20:31Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"ddd958f75dc0b280a83eb49a813f755bf9710098133fc864ed5144f39141a821","abstract_canon_sha256":"fdc32e06dc1f320f5316d09cf63bc15bde4a16c06c6ccba65b8be1fed8d705c9"},"schema_version":"1.0"},"canonical_sha256":"ec688a19880aeafaf9e16c6de6a062601b211f08a5ff95aaccd769f3b77d68ba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:02:54.104113Z","signature_b64":"FLVzsrrXJkBrwSvSw0PJWPIG8IaeNvOkygWx1WdyAQTaA1g7B/MaNj7DLcqIJSrINLAN2L5wyzTfK5UobCA4DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec688a19880aeafaf9e16c6de6a062601b211f08a5ff95aaccd769f3b77d68ba","last_reissued_at":"2026-07-05T03:02:54.103646Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:02:54.103646Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.11041","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":"2026-07-05T03:02:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yrrb0jpy6HCnSQRUVCbuJHQeqAFhbQTSM4XUR+mhdfD9oxhGJGLZSqGOfR7oKtDExeOJxgRdELRCG2uPh2TeDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T00:30:25.066211Z"},"content_sha256":"db294178616371833a7ed5c1fb25073f6b52e70e023d2eaff31c707a8adde4f1","schema_version":"1.0","event_id":"sha256:db294178616371833a7ed5c1fb25073f6b52e70e023d2eaff31c707a8adde4f1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:5RUIUGMIBLVPV6PBNRW6NIDCMA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On Negative Mass Cosmology in General Relativity","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"gr-qc","authors_text":"Aldo Gamboa, Alejandro Aguilar-Nieto, Celia Escamilla-Rivera, Sebasti\\'an N\\'ajera","submitted_at":"2021-05-23T23:20:31Z","abstract_excerpt":"In this Letter we present strong arguments in favour of thoroughly revising the negative mass cosmology (NMC), which has been proposed as a simple alternative explanation of dark energy and dark matter effects, within the framework of General Relativity. We show that there are various physical predictions in this model which require fine-tuning in order to make them compatible with current cosmological surveys. In this way, the original motivation of the NMC model becomes obscured due to the imposition of fine-tuned unknown variables. We conclude that a more rigorous theoretical treatment is n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.11041","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/2105.11041/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":"2026-07-05T03:02:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BuTsyBsnWaMGj6r8NowyyVjsXavtQMfusFadvmheNipJOFbZBfed4R7Xi4gghb/kCCUBm0IcDKyknxLL5GKjAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T00:30:25.066823Z"},"content_sha256":"bf1385af0e081b10a7d2dafceaff4436e303ad17ab2a12916ae589d847b482de","schema_version":"1.0","event_id":"sha256:bf1385af0e081b10a7d2dafceaff4436e303ad17ab2a12916ae589d847b482de"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5RUIUGMIBLVPV6PBNRW6NIDCMA/bundle.json","state_url":"https://pith.science/pith/5RUIUGMIBLVPV6PBNRW6NIDCMA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5RUIUGMIBLVPV6PBNRW6NIDCMA/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":"2026-08-06T00:30:25Z","links":{"resolver":"https://pith.science/pith/5RUIUGMIBLVPV6PBNRW6NIDCMA","bundle":"https://pith.science/pith/5RUIUGMIBLVPV6PBNRW6NIDCMA/bundle.json","state":"https://pith.science/pith/5RUIUGMIBLVPV6PBNRW6NIDCMA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5RUIUGMIBLVPV6PBNRW6NIDCMA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:5RUIUGMIBLVPV6PBNRW6NIDCMA","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":"fdc32e06dc1f320f5316d09cf63bc15bde4a16c06c6ccba65b8be1fed8d705c9","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2021-05-23T23:20:31Z","title_canon_sha256":"ddd958f75dc0b280a83eb49a813f755bf9710098133fc864ed5144f39141a821"},"schema_version":"1.0","source":{"id":"2105.11041","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.11041","created_at":"2026-07-05T03:02:54Z"},{"alias_kind":"arxiv_version","alias_value":"2105.11041v2","created_at":"2026-07-05T03:02:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.11041","created_at":"2026-07-05T03:02:54Z"},{"alias_kind":"pith_short_12","alias_value":"5RUIUGMIBLVP","created_at":"2026-07-05T03:02:54Z"},{"alias_kind":"pith_short_16","alias_value":"5RUIUGMIBLVPV6PB","created_at":"2026-07-05T03:02:54Z"},{"alias_kind":"pith_short_8","alias_value":"5RUIUGMI","created_at":"2026-07-05T03:02:54Z"}],"graph_snapshots":[{"event_id":"sha256:bf1385af0e081b10a7d2dafceaff4436e303ad17ab2a12916ae589d847b482de","target":"graph","created_at":"2026-07-05T03:02:54Z","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/2105.11041/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this Letter we present strong arguments in favour of thoroughly revising the negative mass cosmology (NMC), which has been proposed as a simple alternative explanation of dark energy and dark matter effects, within the framework of General Relativity. We show that there are various physical predictions in this model which require fine-tuning in order to make them compatible with current cosmological surveys. In this way, the original motivation of the NMC model becomes obscured due to the imposition of fine-tuned unknown variables. We conclude that a more rigorous theoretical treatment is n","authors_text":"Aldo Gamboa, Alejandro Aguilar-Nieto, Celia Escamilla-Rivera, Sebasti\\'an N\\'ajera","cross_cats":["astro-ph.CO"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2021-05-23T23:20:31Z","title":"On Negative Mass Cosmology in General Relativity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.11041","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:db294178616371833a7ed5c1fb25073f6b52e70e023d2eaff31c707a8adde4f1","target":"record","created_at":"2026-07-05T03:02:54Z","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":"fdc32e06dc1f320f5316d09cf63bc15bde4a16c06c6ccba65b8be1fed8d705c9","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2021-05-23T23:20:31Z","title_canon_sha256":"ddd958f75dc0b280a83eb49a813f755bf9710098133fc864ed5144f39141a821"},"schema_version":"1.0","source":{"id":"2105.11041","kind":"arxiv","version":2}},"canonical_sha256":"ec688a19880aeafaf9e16c6de6a062601b211f08a5ff95aaccd769f3b77d68ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ec688a19880aeafaf9e16c6de6a062601b211f08a5ff95aaccd769f3b77d68ba","first_computed_at":"2026-07-05T03:02:54.103646Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:02:54.103646Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FLVzsrrXJkBrwSvSw0PJWPIG8IaeNvOkygWx1WdyAQTaA1g7B/MaNj7DLcqIJSrINLAN2L5wyzTfK5UobCA4DA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:02:54.104113Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.11041","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:db294178616371833a7ed5c1fb25073f6b52e70e023d2eaff31c707a8adde4f1","sha256:bf1385af0e081b10a7d2dafceaff4436e303ad17ab2a12916ae589d847b482de"],"state_sha256":"e03a68b9f15001ba075b3f7efd09f49fbb885d5232dcac44090ad47232739bf5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mZBjDSOj21uc3FyX6PvrB5szo3MX1cqe2IZb3oGfoVjgEvBtwJVWLVLLNuRe5V3lLgKSQEx+kKhLEk9/hjdpBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T00:30:25.073706Z","bundle_sha256":"4019d72fa3ef2c29152d38c4a6282af9ec0c216060cb7b7204a0b45921b914dd"}}