{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:C6NU4FGEABUBTCXJIQ6ATYLXSV","short_pith_number":"pith:C6NU4FGE","canonical_record":{"source":{"id":"1602.01152","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-02-02T23:12:25Z","cross_cats_sorted":[],"title_canon_sha256":"977a4046fa138ca47026e1ae2b375547ef45e2b8c7fd67449af4ca82161838a6","abstract_canon_sha256":"59a866a7c96278eb715a2b6a88aa856b1a3095208430747452b3690ee9634b5e"},"schema_version":"1.0"},"canonical_sha256":"179b4e14c40068198ae9443c09e177957d042521d28e811dcfa50f003aec4802","source":{"kind":"arxiv","id":"1602.01152","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.01152","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"arxiv_version","alias_value":"1602.01152v2","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.01152","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"pith_short_12","alias_value":"C6NU4FGEABUB","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"C6NU4FGEABUBTCXJ","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"C6NU4FGE","created_at":"2026-05-18T12:30:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:C6NU4FGEABUBTCXJIQ6ATYLXSV","target":"record","payload":{"canonical_record":{"source":{"id":"1602.01152","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-02-02T23:12:25Z","cross_cats_sorted":[],"title_canon_sha256":"977a4046fa138ca47026e1ae2b375547ef45e2b8c7fd67449af4ca82161838a6","abstract_canon_sha256":"59a866a7c96278eb715a2b6a88aa856b1a3095208430747452b3690ee9634b5e"},"schema_version":"1.0"},"canonical_sha256":"179b4e14c40068198ae9443c09e177957d042521d28e811dcfa50f003aec4802","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:10.850124Z","signature_b64":"k+nDBWjNKPSTUAGaJsQZTwJFcOiGfxywPPrdkKnQ19vXRebN2bKjWGQJxa+c3zy4HqZIXG+/ISyQiIE7PNImCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"179b4e14c40068198ae9443c09e177957d042521d28e811dcfa50f003aec4802","last_reissued_at":"2026-05-18T01:21:10.849375Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:10.849375Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.01152","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":"2026-05-18T01:21:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yq6UwIWNHZBvQ3IWvKZSJDYvbGOt7Ct8n08g46gTZAMAvSLkVrSwfv6omB+YO/wq6zMteYvhCcN0ONsn7q/9AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T05:39:26.009204Z"},"content_sha256":"b59fba89e59791f7010b624e6ebe5d531f99338b45a2de7f8d5f5aeec9c8b488","schema_version":"1.0","event_id":"sha256:b59fba89e59791f7010b624e6ebe5d531f99338b45a2de7f8d5f5aeec9c8b488"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:C6NU4FGEABUBTCXJIQ6ATYLXSV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Was there a negative vacuum energy in your past?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"George Chapline, James Barbieri","submitted_at":"2016-02-02T23:12:25Z","abstract_excerpt":"A model for gravitational collapse where the event horizon is a quantum critical phase transition is extended to provide an explanation for the origin of the observable universe, where the expanding universe that we observe today was proceeded by a flat universe with a negative cosmological constant. In principal this allows one derive all the features of our universe from a single parameter: the magnitude of the pre-big bang negative vacuum energy density. In this paper a simple model for the big bang is introduced which allows us to relate the present day energy density and temperature fluct"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.01152","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":"2026-05-18T01:21:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vI5kcACXq3CyLNEndk8V90NSdoQ0ncK0n+HZ82eZ7V6RC5Dq2jOOUNchhw00V99B2folRrP3/mfbtT3CNGvXAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T05:39:26.009893Z"},"content_sha256":"99cfbb5a8562176fb97f4ed6f10d0a6645782f86d0d3d9897492fabd0626f269","schema_version":"1.0","event_id":"sha256:99cfbb5a8562176fb97f4ed6f10d0a6645782f86d0d3d9897492fabd0626f269"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C6NU4FGEABUBTCXJIQ6ATYLXSV/bundle.json","state_url":"https://pith.science/pith/C6NU4FGEABUBTCXJIQ6ATYLXSV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C6NU4FGEABUBTCXJIQ6ATYLXSV/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":"2026-05-24T05:39:26Z","links":{"resolver":"https://pith.science/pith/C6NU4FGEABUBTCXJIQ6ATYLXSV","bundle":"https://pith.science/pith/C6NU4FGEABUBTCXJIQ6ATYLXSV/bundle.json","state":"https://pith.science/pith/C6NU4FGEABUBTCXJIQ6ATYLXSV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C6NU4FGEABUBTCXJIQ6ATYLXSV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:C6NU4FGEABUBTCXJIQ6ATYLXSV","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":"59a866a7c96278eb715a2b6a88aa856b1a3095208430747452b3690ee9634b5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-02-02T23:12:25Z","title_canon_sha256":"977a4046fa138ca47026e1ae2b375547ef45e2b8c7fd67449af4ca82161838a6"},"schema_version":"1.0","source":{"id":"1602.01152","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.01152","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"arxiv_version","alias_value":"1602.01152v2","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.01152","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"pith_short_12","alias_value":"C6NU4FGEABUB","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"C6NU4FGEABUBTCXJ","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"C6NU4FGE","created_at":"2026-05-18T12:30:09Z"}],"graph_snapshots":[{"event_id":"sha256:99cfbb5a8562176fb97f4ed6f10d0a6645782f86d0d3d9897492fabd0626f269","target":"graph","created_at":"2026-05-18T01:21:10Z","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"},"paper":{"abstract_excerpt":"A model for gravitational collapse where the event horizon is a quantum critical phase transition is extended to provide an explanation for the origin of the observable universe, where the expanding universe that we observe today was proceeded by a flat universe with a negative cosmological constant. In principal this allows one derive all the features of our universe from a single parameter: the magnitude of the pre-big bang negative vacuum energy density. In this paper a simple model for the big bang is introduced which allows us to relate the present day energy density and temperature fluct","authors_text":"George Chapline, James Barbieri","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-02-02T23:12:25Z","title":"Was there a negative vacuum energy in your past?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.01152","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:b59fba89e59791f7010b624e6ebe5d531f99338b45a2de7f8d5f5aeec9c8b488","target":"record","created_at":"2026-05-18T01:21:10Z","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":"59a866a7c96278eb715a2b6a88aa856b1a3095208430747452b3690ee9634b5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-02-02T23:12:25Z","title_canon_sha256":"977a4046fa138ca47026e1ae2b375547ef45e2b8c7fd67449af4ca82161838a6"},"schema_version":"1.0","source":{"id":"1602.01152","kind":"arxiv","version":2}},"canonical_sha256":"179b4e14c40068198ae9443c09e177957d042521d28e811dcfa50f003aec4802","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"179b4e14c40068198ae9443c09e177957d042521d28e811dcfa50f003aec4802","first_computed_at":"2026-05-18T01:21:10.849375Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:10.849375Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k+nDBWjNKPSTUAGaJsQZTwJFcOiGfxywPPrdkKnQ19vXRebN2bKjWGQJxa+c3zy4HqZIXG+/ISyQiIE7PNImCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:10.850124Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.01152","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b59fba89e59791f7010b624e6ebe5d531f99338b45a2de7f8d5f5aeec9c8b488","sha256:99cfbb5a8562176fb97f4ed6f10d0a6645782f86d0d3d9897492fabd0626f269"],"state_sha256":"9d56b90f9e37e5e84bc3e8caa43bd44c5fb586d64451d9d835c84db34176e5dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h9CTcVCzNHftcjygZWehv1C4NP+GMcRkPUUCHTSuUNeDoEY4Qyqe0+iOXrtp3B7qATDqlFCcYZ1dEn+5PARuDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T05:39:26.013624Z","bundle_sha256":"40b82fd35649ebbba44aa8541c468b986cb10d32012fa19dd2f796c81e2e25b9"}}