{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:L6GGEBPUOYLZJ6PIOZU2EIRLSU","short_pith_number":"pith:L6GGEBPU","canonical_record":{"source":{"id":"1512.00272","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-30T15:05:59Z","cross_cats_sorted":["cs.DC","hep-ex"],"title_canon_sha256":"816a21f96835284e7e77cc55a066647a416b85d13cdda7e802dd91b8a40f1549","abstract_canon_sha256":"b24b5184c291868b12e1ab4d76dc9dc06f1b27c20da55af5e86ff53261576a0f"},"schema_version":"1.0"},"canonical_sha256":"5f8c6205f4761794f9e87669a2222b953cd53d8a1015f30ab7e55fc90867e89c","source":{"kind":"arxiv","id":"1512.00272","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.00272","created_at":"2026-05-18T01:22:32Z"},{"alias_kind":"arxiv_version","alias_value":"1512.00272v1","created_at":"2026-05-18T01:22:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.00272","created_at":"2026-05-18T01:22:32Z"},{"alias_kind":"pith_short_12","alias_value":"L6GGEBPUOYLZ","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"L6GGEBPUOYLZJ6PI","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"L6GGEBPU","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:L6GGEBPUOYLZJ6PIOZU2EIRLSU","target":"record","payload":{"canonical_record":{"source":{"id":"1512.00272","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-30T15:05:59Z","cross_cats_sorted":["cs.DC","hep-ex"],"title_canon_sha256":"816a21f96835284e7e77cc55a066647a416b85d13cdda7e802dd91b8a40f1549","abstract_canon_sha256":"b24b5184c291868b12e1ab4d76dc9dc06f1b27c20da55af5e86ff53261576a0f"},"schema_version":"1.0"},"canonical_sha256":"5f8c6205f4761794f9e87669a2222b953cd53d8a1015f30ab7e55fc90867e89c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:32.670792Z","signature_b64":"3YyqSxhX8h3P8TKkMIbF1ipEvQUpOGklm9TO+YPPw3nTI0vH3dgXWBJENrxkzU4ca1k7V4lH0uQfSlcupjX+Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5f8c6205f4761794f9e87669a2222b953cd53d8a1015f30ab7e55fc90867e89c","last_reissued_at":"2026-05-18T01:22:32.670349Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:32.670349Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.00272","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":"2026-05-18T01:22:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+cBBYq22/5Q7kEQ87oVgvVqq+iOaWAfPFEmQgUcFQIXTsJwZp9IVMtM2T8SMMaxfTuVjlnjPbjJp++9+8OCeCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T20:49:24.116400Z"},"content_sha256":"9b3c77d49893363f9d28d718abac7500e47a56eeba40717b245d83aa6b48d2f6","schema_version":"1.0","event_id":"sha256:9b3c77d49893363f9d28d718abac7500e47a56eeba40717b245d83aa6b48d2f6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:L6GGEBPUOYLZJ6PIOZU2EIRLSU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enabling Object Storage via shims for Grid Middleware","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":["cs.DC","hep-ex"],"primary_cat":"physics.comp-ph","authors_text":"Alastair Dewhurst, David Britton, David Crooks, Gareth Roy, Samuel Cadellin Skipsey, Shaun De Witt","submitted_at":"2015-10-30T15:05:59Z","abstract_excerpt":"The Object Store model has quickly become the basis of most commercially successful mass storage infrastructure, backing so-called \"Cloud\" storage such as Amazon S3, but also underlying the implementation of most parallel distributed storage systems. Many of the assumptions in Object Store design are similar, but not identical, to concepts in the design of Grid Storage Elements, although the requirement for \"POSIX-like\" filesystem structures on top of SEs makes the disjunction seem larger. As modern Object Stores provide many features that most Grid SEs do not (block level striping, parallel a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.00272","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":"2026-05-18T01:22:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Esa2UKsmlcyZVjfKbieR5PY+UPWUzzHbucadVAsTrHilZGIAJhx0S+rsE7ud3q4kqw83QnBMSpmRGTqvq7MLCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T20:49:24.116756Z"},"content_sha256":"d280cab86997dfb62fd22c42abe97c1d7127241d6c34ac14f1b5719bd3119024","schema_version":"1.0","event_id":"sha256:d280cab86997dfb62fd22c42abe97c1d7127241d6c34ac14f1b5719bd3119024"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L6GGEBPUOYLZJ6PIOZU2EIRLSU/bundle.json","state_url":"https://pith.science/pith/L6GGEBPUOYLZJ6PIOZU2EIRLSU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L6GGEBPUOYLZJ6PIOZU2EIRLSU/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":"2026-06-28T20:49:24Z","links":{"resolver":"https://pith.science/pith/L6GGEBPUOYLZJ6PIOZU2EIRLSU","bundle":"https://pith.science/pith/L6GGEBPUOYLZJ6PIOZU2EIRLSU/bundle.json","state":"https://pith.science/pith/L6GGEBPUOYLZJ6PIOZU2EIRLSU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L6GGEBPUOYLZJ6PIOZU2EIRLSU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:L6GGEBPUOYLZJ6PIOZU2EIRLSU","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":"b24b5184c291868b12e1ab4d76dc9dc06f1b27c20da55af5e86ff53261576a0f","cross_cats_sorted":["cs.DC","hep-ex"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-30T15:05:59Z","title_canon_sha256":"816a21f96835284e7e77cc55a066647a416b85d13cdda7e802dd91b8a40f1549"},"schema_version":"1.0","source":{"id":"1512.00272","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.00272","created_at":"2026-05-18T01:22:32Z"},{"alias_kind":"arxiv_version","alias_value":"1512.00272v1","created_at":"2026-05-18T01:22:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.00272","created_at":"2026-05-18T01:22:32Z"},{"alias_kind":"pith_short_12","alias_value":"L6GGEBPUOYLZ","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"L6GGEBPUOYLZJ6PI","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"L6GGEBPU","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:d280cab86997dfb62fd22c42abe97c1d7127241d6c34ac14f1b5719bd3119024","target":"graph","created_at":"2026-05-18T01:22:32Z","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":"The Object Store model has quickly become the basis of most commercially successful mass storage infrastructure, backing so-called \"Cloud\" storage such as Amazon S3, but also underlying the implementation of most parallel distributed storage systems. Many of the assumptions in Object Store design are similar, but not identical, to concepts in the design of Grid Storage Elements, although the requirement for \"POSIX-like\" filesystem structures on top of SEs makes the disjunction seem larger. As modern Object Stores provide many features that most Grid SEs do not (block level striping, parallel a","authors_text":"Alastair Dewhurst, David Britton, David Crooks, Gareth Roy, Samuel Cadellin Skipsey, Shaun De Witt","cross_cats":["cs.DC","hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-30T15:05:59Z","title":"Enabling Object Storage via shims for Grid Middleware"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.00272","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":"sha256:9b3c77d49893363f9d28d718abac7500e47a56eeba40717b245d83aa6b48d2f6","target":"record","created_at":"2026-05-18T01:22:32Z","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":"b24b5184c291868b12e1ab4d76dc9dc06f1b27c20da55af5e86ff53261576a0f","cross_cats_sorted":["cs.DC","hep-ex"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-30T15:05:59Z","title_canon_sha256":"816a21f96835284e7e77cc55a066647a416b85d13cdda7e802dd91b8a40f1549"},"schema_version":"1.0","source":{"id":"1512.00272","kind":"arxiv","version":1}},"canonical_sha256":"5f8c6205f4761794f9e87669a2222b953cd53d8a1015f30ab7e55fc90867e89c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5f8c6205f4761794f9e87669a2222b953cd53d8a1015f30ab7e55fc90867e89c","first_computed_at":"2026-05-18T01:22:32.670349Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:32.670349Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3YyqSxhX8h3P8TKkMIbF1ipEvQUpOGklm9TO+YPPw3nTI0vH3dgXWBJENrxkzU4ca1k7V4lH0uQfSlcupjX+Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:32.670792Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.00272","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b3c77d49893363f9d28d718abac7500e47a56eeba40717b245d83aa6b48d2f6","sha256:d280cab86997dfb62fd22c42abe97c1d7127241d6c34ac14f1b5719bd3119024"],"state_sha256":"b9319f04d1e034d787fafec22be3eb3acb1a973c4989e2d80bf80a6117ce3092"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hwABaq6VmpKk2hYK03EVPFucWIbk5buUZIltXh+WaJm/R/LRzRueK8jMBFPodjPn4xv/onnSYJngpNa166zWCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T20:49:24.118815Z","bundle_sha256":"dd3b31ae7d4ca8f1153a3a0f044b8386019d90111de0e28a86984cdc883f9708"}}