{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:QYAPDC4AFSMASUZFW5GP2RHOWT","short_pith_number":"pith:QYAPDC4A","canonical_record":{"source":{"id":"1706.03037","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-06-09T16:51:53Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"21257976f86001f490c753715d7ed9857e3dc5f0bd33f5317e882baeda8e4205","abstract_canon_sha256":"91dc1a8ff99eb0b10989c5ad8c45953d0292ad8c65b4b5e3016c816734709300"},"schema_version":"1.0"},"canonical_sha256":"8600f18b802c98095325b74cfd44eeb4c1f2e8c5342eaaed55a86c131454ead3","source":{"kind":"arxiv","id":"1706.03037","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.03037","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"arxiv_version","alias_value":"1706.03037v2","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.03037","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"pith_short_12","alias_value":"QYAPDC4AFSMA","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QYAPDC4AFSMASUZF","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QYAPDC4A","created_at":"2026-05-18T12:31:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:QYAPDC4AFSMASUZFW5GP2RHOWT","target":"record","payload":{"canonical_record":{"source":{"id":"1706.03037","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-06-09T16:51:53Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"21257976f86001f490c753715d7ed9857e3dc5f0bd33f5317e882baeda8e4205","abstract_canon_sha256":"91dc1a8ff99eb0b10989c5ad8c45953d0292ad8c65b4b5e3016c816734709300"},"schema_version":"1.0"},"canonical_sha256":"8600f18b802c98095325b74cfd44eeb4c1f2e8c5342eaaed55a86c131454ead3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:35:20.016497Z","signature_b64":"huuOLsetw6/VhrirfOrRqU+4PiNRZX2eyQpCKi8w7cs0tFKf0aKpS/i+0i+nWmFAchbTujj6twU0LcaszwNxDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8600f18b802c98095325b74cfd44eeb4c1f2e8c5342eaaed55a86c131454ead3","last_reissued_at":"2026-05-18T00:35:20.016112Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:35:20.016112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.03037","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":"2026-05-18T00:35:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AmhG1nAIVzAIvm5qoxpY422aHedIYTLBN69VghmPUk6rX2G4X0cv1vga+4n5eFd/IXeJHbw0M0/Qh6+6K/+VDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T06:06:09.929885Z"},"content_sha256":"85a5310ed027a8c912686943d6c24830cceedc30039ccf20f5a537d820acddf2","schema_version":"1.0","event_id":"sha256:85a5310ed027a8c912686943d6c24830cceedc30039ccf20f5a537d820acddf2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:QYAPDC4AFSMASUZFW5GP2RHOWT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum matter bounce with a dark energy expanding phase","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"gr-qc","authors_text":"Nelson Pinto-Neto, Samuel Colin","submitted_at":"2017-06-09T16:51:53Z","abstract_excerpt":"Analyzing quantum cosmological scenarios containing one scalar field with exponential potential, we have obtained a universe model which realizes a classical dust contraction from very large scales, the initial repeller of the model, and moves to a stiff matter contraction near the singularity, which is avoided due to a quantum bounce. The universe is then launched in a stiff matter expanding phase, which then moves to a dark energy era, finally returning to the dust expanding phase, the final attractor of the model. Hence one has obtained a nonsingular cosmological model where a single scalar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.03037","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":"2026-05-18T00:35:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"usaKsL8mC7w2HbdAdDhmkH3eUqZ0ZfHfDq1fGsBG5NBIe4WXuajt1b2i1pUk1MdhNhjUa+s9HNHMN599OfEFCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T06:06:09.930229Z"},"content_sha256":"3bb6ca2864eb136b8e2dad3048a9452228c6c0338195760d9d855a0f4f3d203f","schema_version":"1.0","event_id":"sha256:3bb6ca2864eb136b8e2dad3048a9452228c6c0338195760d9d855a0f4f3d203f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QYAPDC4AFSMASUZFW5GP2RHOWT/bundle.json","state_url":"https://pith.science/pith/QYAPDC4AFSMASUZFW5GP2RHOWT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QYAPDC4AFSMASUZFW5GP2RHOWT/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":"2026-06-22T06:06:09Z","links":{"resolver":"https://pith.science/pith/QYAPDC4AFSMASUZFW5GP2RHOWT","bundle":"https://pith.science/pith/QYAPDC4AFSMASUZFW5GP2RHOWT/bundle.json","state":"https://pith.science/pith/QYAPDC4AFSMASUZFW5GP2RHOWT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QYAPDC4AFSMASUZFW5GP2RHOWT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:QYAPDC4AFSMASUZFW5GP2RHOWT","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":"91dc1a8ff99eb0b10989c5ad8c45953d0292ad8c65b4b5e3016c816734709300","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-06-09T16:51:53Z","title_canon_sha256":"21257976f86001f490c753715d7ed9857e3dc5f0bd33f5317e882baeda8e4205"},"schema_version":"1.0","source":{"id":"1706.03037","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.03037","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"arxiv_version","alias_value":"1706.03037v2","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.03037","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"pith_short_12","alias_value":"QYAPDC4AFSMA","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QYAPDC4AFSMASUZF","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QYAPDC4A","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:3bb6ca2864eb136b8e2dad3048a9452228c6c0338195760d9d855a0f4f3d203f","target":"graph","created_at":"2026-05-18T00:35:20Z","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":"Analyzing quantum cosmological scenarios containing one scalar field with exponential potential, we have obtained a universe model which realizes a classical dust contraction from very large scales, the initial repeller of the model, and moves to a stiff matter contraction near the singularity, which is avoided due to a quantum bounce. The universe is then launched in a stiff matter expanding phase, which then moves to a dark energy era, finally returning to the dust expanding phase, the final attractor of the model. Hence one has obtained a nonsingular cosmological model where a single scalar","authors_text":"Nelson Pinto-Neto, Samuel Colin","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-06-09T16:51:53Z","title":"Quantum matter bounce with a dark energy expanding phase"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.03037","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":"sha256:85a5310ed027a8c912686943d6c24830cceedc30039ccf20f5a537d820acddf2","target":"record","created_at":"2026-05-18T00:35:20Z","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":"91dc1a8ff99eb0b10989c5ad8c45953d0292ad8c65b4b5e3016c816734709300","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-06-09T16:51:53Z","title_canon_sha256":"21257976f86001f490c753715d7ed9857e3dc5f0bd33f5317e882baeda8e4205"},"schema_version":"1.0","source":{"id":"1706.03037","kind":"arxiv","version":2}},"canonical_sha256":"8600f18b802c98095325b74cfd44eeb4c1f2e8c5342eaaed55a86c131454ead3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8600f18b802c98095325b74cfd44eeb4c1f2e8c5342eaaed55a86c131454ead3","first_computed_at":"2026-05-18T00:35:20.016112Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:35:20.016112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"huuOLsetw6/VhrirfOrRqU+4PiNRZX2eyQpCKi8w7cs0tFKf0aKpS/i+0i+nWmFAchbTujj6twU0LcaszwNxDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:35:20.016497Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.03037","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85a5310ed027a8c912686943d6c24830cceedc30039ccf20f5a537d820acddf2","sha256:3bb6ca2864eb136b8e2dad3048a9452228c6c0338195760d9d855a0f4f3d203f"],"state_sha256":"7fb2d917e6d23d3c4202db68a99d0c1fe3916d68ffd073d1e7d768e27ff1eb94"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Oug+4bT0vDHFllWkxL3y3hi+PwMeEYrG07jjHxPLpBfIVzjwwzcwP7dbohKHeeSFuYfbWg+4KnoY+jN6WqlAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T06:06:09.932129Z","bundle_sha256":"833a7a2eafa7563dc65b9dce53a6b375dce7a8f0fef6cfa9f894763b4b77726d"}}