{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:YGW4ZWCDV2XW6BK4CGKZSTSKQO","short_pith_number":"pith:YGW4ZWCD","canonical_record":{"source":{"id":"1608.00687","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2016-08-02T03:28:30Z","cross_cats_sorted":["cs.DS"],"title_canon_sha256":"ee9ee05c093b4984f15b62add0977b9fc3b9b5e7cd20a79eaa7208273bda6877","abstract_canon_sha256":"d1c6c4b2fc0a2666ba58a512be61cd61667b42211f34a9e2e178363a858f1722"},"schema_version":"1.0"},"canonical_sha256":"c1adccd843aeaf6f055c1195994e4a838be3f037131f0efe4fe609ec087a4143","source":{"kind":"arxiv","id":"1608.00687","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.00687","created_at":"2026-05-18T01:10:01Z"},{"alias_kind":"arxiv_version","alias_value":"1608.00687v1","created_at":"2026-05-18T01:10:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.00687","created_at":"2026-05-18T01:10:01Z"},{"alias_kind":"pith_short_12","alias_value":"YGW4ZWCDV2XW","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YGW4ZWCDV2XW6BK4","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YGW4ZWCD","created_at":"2026-05-18T12:30:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:YGW4ZWCDV2XW6BK4CGKZSTSKQO","target":"record","payload":{"canonical_record":{"source":{"id":"1608.00687","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2016-08-02T03:28:30Z","cross_cats_sorted":["cs.DS"],"title_canon_sha256":"ee9ee05c093b4984f15b62add0977b9fc3b9b5e7cd20a79eaa7208273bda6877","abstract_canon_sha256":"d1c6c4b2fc0a2666ba58a512be61cd61667b42211f34a9e2e178363a858f1722"},"schema_version":"1.0"},"canonical_sha256":"c1adccd843aeaf6f055c1195994e4a838be3f037131f0efe4fe609ec087a4143","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:01.320575Z","signature_b64":"sK4xptenR50ez7QEKoT422CJi4pygsJWIxy0XOAmD1l7jJoWbN8hpSYL9bfEVbVhMFtLtfIccz4h1nPEQfL+Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c1adccd843aeaf6f055c1195994e4a838be3f037131f0efe4fe609ec087a4143","last_reissued_at":"2026-05-18T01:10:01.320058Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:01.320058Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.00687","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":"2026-05-18T01:10:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2JmxTCOpSNCtdm/LcB4oCSTW3h8v1LMLfJ2Ia/OAL808KH+0gKG4PRB774FF2thty9ABSmbbgneZDRNBFfeKCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:39:54.196451Z"},"content_sha256":"6cabef1733b311c95cea3b43764b9491c1679edff552b89797829f434e202932","schema_version":"1.0","event_id":"sha256:6cabef1733b311c95cea3b43764b9491c1679edff552b89797829f434e202932"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:YGW4ZWCDV2XW6BK4CGKZSTSKQO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Green Data Centers: A Survey, Perspectives, and Future Directions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DS"],"primary_cat":"cs.DC","authors_text":"Athanasios V. Vasilakos, Fa Zhang, Xibo Jin, Zhiyong Liu","submitted_at":"2016-08-02T03:28:30Z","abstract_excerpt":"At present, a major concern regarding data centers is their extremely high energy consumption and carbon dioxide emissions. However, because of the over-provisioning of resources, the utilization of existing data centers is, in fact, remarkably low, leading to considerable energy waste. Therefore, over the past few years, many research efforts have been devoted to increasing efficiency for the construction of green data centers. The goal of these efforts is to efficiently utilize available resources and to reduce energy consumption and thermal cooling costs. In this paper, we provide a survey "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.00687","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":"2026-05-18T01:10:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w/fUy76lxnyuw8J8xZFpUuDSfS9IEKTEmYyvex9HObrg+XmglRAwOYfH7xjrUh3WvIC8sIel5YyOzxNnddZJBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:39:54.197119Z"},"content_sha256":"01c83eb842c695cfc827d5117d275ba343ae70f103b4ac9b8b058958c7d70cbf","schema_version":"1.0","event_id":"sha256:01c83eb842c695cfc827d5117d275ba343ae70f103b4ac9b8b058958c7d70cbf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YGW4ZWCDV2XW6BK4CGKZSTSKQO/bundle.json","state_url":"https://pith.science/pith/YGW4ZWCDV2XW6BK4CGKZSTSKQO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YGW4ZWCDV2XW6BK4CGKZSTSKQO/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":"2026-06-06T15:39:54Z","links":{"resolver":"https://pith.science/pith/YGW4ZWCDV2XW6BK4CGKZSTSKQO","bundle":"https://pith.science/pith/YGW4ZWCDV2XW6BK4CGKZSTSKQO/bundle.json","state":"https://pith.science/pith/YGW4ZWCDV2XW6BK4CGKZSTSKQO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YGW4ZWCDV2XW6BK4CGKZSTSKQO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:YGW4ZWCDV2XW6BK4CGKZSTSKQO","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":"d1c6c4b2fc0a2666ba58a512be61cd61667b42211f34a9e2e178363a858f1722","cross_cats_sorted":["cs.DS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2016-08-02T03:28:30Z","title_canon_sha256":"ee9ee05c093b4984f15b62add0977b9fc3b9b5e7cd20a79eaa7208273bda6877"},"schema_version":"1.0","source":{"id":"1608.00687","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.00687","created_at":"2026-05-18T01:10:01Z"},{"alias_kind":"arxiv_version","alias_value":"1608.00687v1","created_at":"2026-05-18T01:10:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.00687","created_at":"2026-05-18T01:10:01Z"},{"alias_kind":"pith_short_12","alias_value":"YGW4ZWCDV2XW","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YGW4ZWCDV2XW6BK4","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YGW4ZWCD","created_at":"2026-05-18T12:30:53Z"}],"graph_snapshots":[{"event_id":"sha256:01c83eb842c695cfc827d5117d275ba343ae70f103b4ac9b8b058958c7d70cbf","target":"graph","created_at":"2026-05-18T01:10:01Z","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":"At present, a major concern regarding data centers is their extremely high energy consumption and carbon dioxide emissions. However, because of the over-provisioning of resources, the utilization of existing data centers is, in fact, remarkably low, leading to considerable energy waste. Therefore, over the past few years, many research efforts have been devoted to increasing efficiency for the construction of green data centers. The goal of these efforts is to efficiently utilize available resources and to reduce energy consumption and thermal cooling costs. In this paper, we provide a survey ","authors_text":"Athanasios V. Vasilakos, Fa Zhang, Xibo Jin, Zhiyong Liu","cross_cats":["cs.DS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2016-08-02T03:28:30Z","title":"Green Data Centers: A Survey, Perspectives, and Future Directions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.00687","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":"sha256:6cabef1733b311c95cea3b43764b9491c1679edff552b89797829f434e202932","target":"record","created_at":"2026-05-18T01:10:01Z","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":"d1c6c4b2fc0a2666ba58a512be61cd61667b42211f34a9e2e178363a858f1722","cross_cats_sorted":["cs.DS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2016-08-02T03:28:30Z","title_canon_sha256":"ee9ee05c093b4984f15b62add0977b9fc3b9b5e7cd20a79eaa7208273bda6877"},"schema_version":"1.0","source":{"id":"1608.00687","kind":"arxiv","version":1}},"canonical_sha256":"c1adccd843aeaf6f055c1195994e4a838be3f037131f0efe4fe609ec087a4143","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c1adccd843aeaf6f055c1195994e4a838be3f037131f0efe4fe609ec087a4143","first_computed_at":"2026-05-18T01:10:01.320058Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:01.320058Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sK4xptenR50ez7QEKoT422CJi4pygsJWIxy0XOAmD1l7jJoWbN8hpSYL9bfEVbVhMFtLtfIccz4h1nPEQfL+Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:01.320575Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.00687","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6cabef1733b311c95cea3b43764b9491c1679edff552b89797829f434e202932","sha256:01c83eb842c695cfc827d5117d275ba343ae70f103b4ac9b8b058958c7d70cbf"],"state_sha256":"1885349f1c70a4774774a07a77e99ffb120a1f8908e74501e86f0efb98f7f13f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"es7Y88+h6zEPBIsFGbe4R7GbwFDhi/5r8kJxDsl84theTsIPkzmgkirA5SAVixu0Zvq04FNt5dF+MkIXFktRAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T15:39:54.200290Z","bundle_sha256":"f636ce79e0910d823be53457a899bb786bec0fe109062414acb520caef7ff22f"}}