{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:R6XRGEXBEQU44RQIEIWZ7W7ZWV","short_pith_number":"pith:R6XRGEXB","canonical_record":{"source":{"id":"1601.03807","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-01-15T04:03:47Z","cross_cats_sorted":[],"title_canon_sha256":"5215f7467a77f381f8cd5ae50a0f3aaa1ed3b326c5226aa124c1cf8f091c8064","abstract_canon_sha256":"94d49a9cf080e2b8bb8778d118c93fdfc72d04402aa5f6a3154f85c38edef823"},"schema_version":"1.0"},"canonical_sha256":"8faf1312e12429ce4608222d9fdbf9b571eb9e92ff4f52a4bf0f61ab68227549","source":{"kind":"arxiv","id":"1601.03807","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.03807","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"arxiv_version","alias_value":"1601.03807v4","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.03807","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"pith_short_12","alias_value":"R6XRGEXBEQU4","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"R6XRGEXBEQU44RQI","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"R6XRGEXB","created_at":"2026-05-18T12:30:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:R6XRGEXBEQU44RQIEIWZ7W7ZWV","target":"record","payload":{"canonical_record":{"source":{"id":"1601.03807","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-01-15T04:03:47Z","cross_cats_sorted":[],"title_canon_sha256":"5215f7467a77f381f8cd5ae50a0f3aaa1ed3b326c5226aa124c1cf8f091c8064","abstract_canon_sha256":"94d49a9cf080e2b8bb8778d118c93fdfc72d04402aa5f6a3154f85c38edef823"},"schema_version":"1.0"},"canonical_sha256":"8faf1312e12429ce4608222d9fdbf9b571eb9e92ff4f52a4bf0f61ab68227549","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:00.865473Z","signature_b64":"u3Tu6JtltAiBJZb1WQ42lBQgv/956zwmQxZsd1kboX3lZSpRMc07lliUXJnCOBnVC+M+IclT9DKQH+KFwUqbBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8faf1312e12429ce4608222d9fdbf9b571eb9e92ff4f52a4bf0f61ab68227549","last_reissued_at":"2026-05-17T23:56:00.864716Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:00.864716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.03807","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:56:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZmOANfCD2Wxu644EnrA7w6dxsElZthXtd097SAy9CkcyzL+S3+IKhrokZx67CW/clwOOi6XHiergUR5Q/JmdAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T06:35:50.869633Z"},"content_sha256":"d15d0b6edfa365125244945168c7aef2a2dbce7762e824de119b8a340447fad3","schema_version":"1.0","event_id":"sha256:d15d0b6edfa365125244945168c7aef2a2dbce7762e824de119b8a340447fad3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:R6XRGEXBEQU44RQIEIWZ7W7ZWV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The CST Bounce Universe model -- a parametric study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Shuyi Li, Xue Song, Yeuk-Kwan E. Cheung, Yiqing Zhu, Yunxuan Li","submitted_at":"2016-01-15T04:03:47Z","abstract_excerpt":"A bounce universe model with a scale-invariant and stable spectrum of primordial density perturbations was constructed using a consistent truncation of the D-brane dynamics from Type IIB string theory. A coupling was introduced between the tachyon field and the adjoint Higgs field on the D3-branes to lock the tachyon at the top of its potential hill and to model the bounce process, which is known as the Coupled Scalar and Tachyon Bounce (CSTB) Universe. The CSTB model has been shown to be ghost free, and it fulfils the null energy condition; in addition, it can also solve the Big Bang cosmic s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.03807","kind":"arxiv","version":4},"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":"2026-05-17T23:56:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J3v9CY8ih5/9ZDHO8VH2d/lP8w+mmGcTb9uBdcpODrVIqZAVnFrLBRfqr0kZrtZHM9f0Kn0rrjZRS1iIyaG8Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T06:35:50.870287Z"},"content_sha256":"c63ea437c7e9d7b78bbd05621559b2e5dcea8cdce2e1a61985f67930590aa0af","schema_version":"1.0","event_id":"sha256:c63ea437c7e9d7b78bbd05621559b2e5dcea8cdce2e1a61985f67930590aa0af"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R6XRGEXBEQU44RQIEIWZ7W7ZWV/bundle.json","state_url":"https://pith.science/pith/R6XRGEXBEQU44RQIEIWZ7W7ZWV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R6XRGEXBEQU44RQIEIWZ7W7ZWV/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":"2026-05-27T06:35:50Z","links":{"resolver":"https://pith.science/pith/R6XRGEXBEQU44RQIEIWZ7W7ZWV","bundle":"https://pith.science/pith/R6XRGEXBEQU44RQIEIWZ7W7ZWV/bundle.json","state":"https://pith.science/pith/R6XRGEXBEQU44RQIEIWZ7W7ZWV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R6XRGEXBEQU44RQIEIWZ7W7ZWV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:R6XRGEXBEQU44RQIEIWZ7W7ZWV","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":"94d49a9cf080e2b8bb8778d118c93fdfc72d04402aa5f6a3154f85c38edef823","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-01-15T04:03:47Z","title_canon_sha256":"5215f7467a77f381f8cd5ae50a0f3aaa1ed3b326c5226aa124c1cf8f091c8064"},"schema_version":"1.0","source":{"id":"1601.03807","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.03807","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"arxiv_version","alias_value":"1601.03807v4","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.03807","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"pith_short_12","alias_value":"R6XRGEXBEQU4","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"R6XRGEXBEQU44RQI","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"R6XRGEXB","created_at":"2026-05-18T12:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:c63ea437c7e9d7b78bbd05621559b2e5dcea8cdce2e1a61985f67930590aa0af","target":"graph","created_at":"2026-05-17T23:56:00Z","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 bounce universe model with a scale-invariant and stable spectrum of primordial density perturbations was constructed using a consistent truncation of the D-brane dynamics from Type IIB string theory. A coupling was introduced between the tachyon field and the adjoint Higgs field on the D3-branes to lock the tachyon at the top of its potential hill and to model the bounce process, which is known as the Coupled Scalar and Tachyon Bounce (CSTB) Universe. The CSTB model has been shown to be ghost free, and it fulfils the null energy condition; in addition, it can also solve the Big Bang cosmic s","authors_text":"Shuyi Li, Xue Song, Yeuk-Kwan E. Cheung, Yiqing Zhu, Yunxuan Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-01-15T04:03:47Z","title":"The CST Bounce Universe model -- a parametric study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.03807","kind":"arxiv","version":4},"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:d15d0b6edfa365125244945168c7aef2a2dbce7762e824de119b8a340447fad3","target":"record","created_at":"2026-05-17T23:56:00Z","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":"94d49a9cf080e2b8bb8778d118c93fdfc72d04402aa5f6a3154f85c38edef823","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-01-15T04:03:47Z","title_canon_sha256":"5215f7467a77f381f8cd5ae50a0f3aaa1ed3b326c5226aa124c1cf8f091c8064"},"schema_version":"1.0","source":{"id":"1601.03807","kind":"arxiv","version":4}},"canonical_sha256":"8faf1312e12429ce4608222d9fdbf9b571eb9e92ff4f52a4bf0f61ab68227549","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8faf1312e12429ce4608222d9fdbf9b571eb9e92ff4f52a4bf0f61ab68227549","first_computed_at":"2026-05-17T23:56:00.864716Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:00.864716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"u3Tu6JtltAiBJZb1WQ42lBQgv/956zwmQxZsd1kboX3lZSpRMc07lliUXJnCOBnVC+M+IclT9DKQH+KFwUqbBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:00.865473Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.03807","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d15d0b6edfa365125244945168c7aef2a2dbce7762e824de119b8a340447fad3","sha256:c63ea437c7e9d7b78bbd05621559b2e5dcea8cdce2e1a61985f67930590aa0af"],"state_sha256":"1d1061779125752b7a721ef0d9018e92bc281a79ca771a44918b18e6e4a16324"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xfg/KuBxAHiWBqeqVi68r1CmXWrWBO5QxKcujsrV3PBYxLp5SzEN/otxLKRCV/l73I4D3FS4b/96WRpZCvA2DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T06:35:50.873638Z","bundle_sha256":"d932488920c000f309009b895661f07bbca80ecff098450e86dc04446115351d"}}