{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:JESWACYAUQZVAR7MAERTNA5ZOP","short_pith_number":"pith:JESWACYA","canonical_record":{"source":{"id":"1205.0483","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-05-02T16:24:46Z","cross_cats_sorted":[],"title_canon_sha256":"34ad449bd5ccef7340704c9463968e71f6616d3b31ac503b0167d1e1e184c228","abstract_canon_sha256":"8a02934b992c7dd793f320323638e3555ccaf3d3de7549296370503586ce375b"},"schema_version":"1.0"},"canonical_sha256":"4925600b00a4335047ec01233683b973ed896e966038e4623375e9ca70fff62c","source":{"kind":"arxiv","id":"1205.0483","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.0483","created_at":"2026-05-18T03:56:34Z"},{"alias_kind":"arxiv_version","alias_value":"1205.0483v1","created_at":"2026-05-18T03:56:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.0483","created_at":"2026-05-18T03:56:34Z"},{"alias_kind":"pith_short_12","alias_value":"JESWACYAUQZV","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"JESWACYAUQZVAR7M","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"JESWACYA","created_at":"2026-05-18T12:27:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:JESWACYAUQZVAR7MAERTNA5ZOP","target":"record","payload":{"canonical_record":{"source":{"id":"1205.0483","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-05-02T16:24:46Z","cross_cats_sorted":[],"title_canon_sha256":"34ad449bd5ccef7340704c9463968e71f6616d3b31ac503b0167d1e1e184c228","abstract_canon_sha256":"8a02934b992c7dd793f320323638e3555ccaf3d3de7549296370503586ce375b"},"schema_version":"1.0"},"canonical_sha256":"4925600b00a4335047ec01233683b973ed896e966038e4623375e9ca70fff62c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:56:34.428784Z","signature_b64":"nXORyUwB0Jun2bFCVLbfdzollNM5zk9Pb5Y6h/wEQBIGAGWqzU9Rt12EUQPFsQtWTiwt7TnAcIF8Ji/iuU5uBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4925600b00a4335047ec01233683b973ed896e966038e4623375e9ca70fff62c","last_reissued_at":"2026-05-18T03:56:34.428251Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:56:34.428251Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.0483","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:56:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6pdpvsiSUig9B7DMzc4Dcz+vqNWT60H62xOyMSGg9MTTUljydWbxRH6fxzx2EIK0i6nJ21YzJnZlaQqVsOy6Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T12:43:52.736554Z"},"content_sha256":"a055cc663ca0474571a2547e8e438cade2c4fd8f4dab82eedee7af12fdb9a70b","schema_version":"1.0","event_id":"sha256:a055cc663ca0474571a2547e8e438cade2c4fd8f4dab82eedee7af12fdb9a70b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:JESWACYAUQZVAR7MAERTNA5ZOP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High availability using virtualization - 3RC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SY","authors_text":"Alberto Ciampa, Andrea Domenici, Enrico Mazzoni, Federico Calzolari, Gigliola Vaglini, Silvia Arezzini","submitted_at":"2012-05-02T16:24:46Z","abstract_excerpt":"High availability has always been one of the main problems for a data center. Till now high availability was achieved by host per host redundancy, a highly expensive method in terms of hardware and human costs. A new approach to the problem can be offered by virtualization. Using virtualization, it is possible to achieve a redundancy system for all the services running on a data center. This new approach to high availability allows the running virtual machines to be distributed over a small number of servers, by exploiting the features of the virtualization layer: start, stop and move virtual "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.0483","kind":"arxiv","version":1},"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":"2026-05-18T03:56:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pQBjywiMvj51uF62sMDB00UtF241+Ct+7ojJHbIenq2bmVwXedSh2EwqmHKxZajuQWy27wW373e+NxL9cQ1xDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T12:43:52.736890Z"},"content_sha256":"69eaf41d766215e2f554ee59d128c02ac47ba582caec64e20f78db7ad0d2e118","schema_version":"1.0","event_id":"sha256:69eaf41d766215e2f554ee59d128c02ac47ba582caec64e20f78db7ad0d2e118"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JESWACYAUQZVAR7MAERTNA5ZOP/bundle.json","state_url":"https://pith.science/pith/JESWACYAUQZVAR7MAERTNA5ZOP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JESWACYAUQZVAR7MAERTNA5ZOP/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":"2026-06-28T12:43:52Z","links":{"resolver":"https://pith.science/pith/JESWACYAUQZVAR7MAERTNA5ZOP","bundle":"https://pith.science/pith/JESWACYAUQZVAR7MAERTNA5ZOP/bundle.json","state":"https://pith.science/pith/JESWACYAUQZVAR7MAERTNA5ZOP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JESWACYAUQZVAR7MAERTNA5ZOP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:JESWACYAUQZVAR7MAERTNA5ZOP","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":"8a02934b992c7dd793f320323638e3555ccaf3d3de7549296370503586ce375b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-05-02T16:24:46Z","title_canon_sha256":"34ad449bd5ccef7340704c9463968e71f6616d3b31ac503b0167d1e1e184c228"},"schema_version":"1.0","source":{"id":"1205.0483","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.0483","created_at":"2026-05-18T03:56:34Z"},{"alias_kind":"arxiv_version","alias_value":"1205.0483v1","created_at":"2026-05-18T03:56:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.0483","created_at":"2026-05-18T03:56:34Z"},{"alias_kind":"pith_short_12","alias_value":"JESWACYAUQZV","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"JESWACYAUQZVAR7M","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"JESWACYA","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:69eaf41d766215e2f554ee59d128c02ac47ba582caec64e20f78db7ad0d2e118","target":"graph","created_at":"2026-05-18T03:56:34Z","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":"High availability has always been one of the main problems for a data center. Till now high availability was achieved by host per host redundancy, a highly expensive method in terms of hardware and human costs. A new approach to the problem can be offered by virtualization. Using virtualization, it is possible to achieve a redundancy system for all the services running on a data center. This new approach to high availability allows the running virtual machines to be distributed over a small number of servers, by exploiting the features of the virtualization layer: start, stop and move virtual ","authors_text":"Alberto Ciampa, Andrea Domenici, Enrico Mazzoni, Federico Calzolari, Gigliola Vaglini, Silvia Arezzini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-05-02T16:24:46Z","title":"High availability using virtualization - 3RC"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.0483","kind":"arxiv","version":1},"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:a055cc663ca0474571a2547e8e438cade2c4fd8f4dab82eedee7af12fdb9a70b","target":"record","created_at":"2026-05-18T03:56:34Z","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":"8a02934b992c7dd793f320323638e3555ccaf3d3de7549296370503586ce375b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-05-02T16:24:46Z","title_canon_sha256":"34ad449bd5ccef7340704c9463968e71f6616d3b31ac503b0167d1e1e184c228"},"schema_version":"1.0","source":{"id":"1205.0483","kind":"arxiv","version":1}},"canonical_sha256":"4925600b00a4335047ec01233683b973ed896e966038e4623375e9ca70fff62c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4925600b00a4335047ec01233683b973ed896e966038e4623375e9ca70fff62c","first_computed_at":"2026-05-18T03:56:34.428251Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:56:34.428251Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nXORyUwB0Jun2bFCVLbfdzollNM5zk9Pb5Y6h/wEQBIGAGWqzU9Rt12EUQPFsQtWTiwt7TnAcIF8Ji/iuU5uBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:56:34.428784Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.0483","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a055cc663ca0474571a2547e8e438cade2c4fd8f4dab82eedee7af12fdb9a70b","sha256:69eaf41d766215e2f554ee59d128c02ac47ba582caec64e20f78db7ad0d2e118"],"state_sha256":"ae8035123d81ca9acc4e9877c737766858293facf513105b673dc6d0e625be3b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"USuf/UXeWnMFVZiWbNlgn2vpN9blwVHCm/G4gvYYL0QX0hgBeD9skzH01/NINE4gOCfqzg2XgGKTgwGqi7c/AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T12:43:52.738776Z","bundle_sha256":"b666210d2c5359a679d0bdddbbc4efce95cf1bc9190ad5d0e36e41e6081825d1"}}