{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:CVAFY76HSVMY3W7BCGXVHKBKOL","short_pith_number":"pith:CVAFY76H","canonical_record":{"source":{"id":"1905.06911","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2019-05-16T17:14:44Z","cross_cats_sorted":[],"title_canon_sha256":"6ee88ed9f81ef3130cc83e92c9be715fc92c72dac25c62448e559c3c7448e6d4","abstract_canon_sha256":"dfb4eed55cba8d8e8a408ddfc0fe6c616f5873f7a81b5d29b2eddc2e58b5b995"},"schema_version":"1.0"},"canonical_sha256":"15405c7fc795598ddbe111af53a82a72ca59981da252e5cfca42b2e04394cc3e","source":{"kind":"arxiv","id":"1905.06911","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.06911","created_at":"2026-05-17T23:45:58Z"},{"alias_kind":"arxiv_version","alias_value":"1905.06911v1","created_at":"2026-05-17T23:45:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.06911","created_at":"2026-05-17T23:45:58Z"},{"alias_kind":"pith_short_12","alias_value":"CVAFY76HSVMY","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"CVAFY76HSVMY3W7B","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"CVAFY76H","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:CVAFY76HSVMY3W7BCGXVHKBKOL","target":"record","payload":{"canonical_record":{"source":{"id":"1905.06911","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2019-05-16T17:14:44Z","cross_cats_sorted":[],"title_canon_sha256":"6ee88ed9f81ef3130cc83e92c9be715fc92c72dac25c62448e559c3c7448e6d4","abstract_canon_sha256":"dfb4eed55cba8d8e8a408ddfc0fe6c616f5873f7a81b5d29b2eddc2e58b5b995"},"schema_version":"1.0"},"canonical_sha256":"15405c7fc795598ddbe111af53a82a72ca59981da252e5cfca42b2e04394cc3e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:45:58.543446Z","signature_b64":"LpEBmAgYpMnmB/2xrikzFiGnQIrE56nHV1ThF/qjahB6Id9tV9w7LH8NG0JPTr04zeeo08NxWhelaDRHUbiTCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15405c7fc795598ddbe111af53a82a72ca59981da252e5cfca42b2e04394cc3e","last_reissued_at":"2026-05-17T23:45:58.542779Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:45:58.542779Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.06911","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":"2026-05-17T23:45:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gDNLczxG+1LDg967k19N+KL3K7gvM5pC1RuWHCBVkJW+FdseJxa/+3MoRO7/HsLPDr0SqkIL/yeqPvu3QzkzCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T19:54:40.954220Z"},"content_sha256":"74f23288c310f505de3091e6e22f9f450435a4c0a62aec6ff304dc2174ffddf1","schema_version":"1.0","event_id":"sha256:74f23288c310f505de3091e6e22f9f450435a4c0a62aec6ff304dc2174ffddf1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:CVAFY76HSVMY3W7BCGXVHKBKOL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"StashCache: A Distributed Caching Federation for the Open Science Grid","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DC","authors_text":"Brian Bockelman, Brian Lin, Derek Weitzel, Edgar Fajardo Hernandez, Ilija Vukotic, Marian Zvada, Mats Rynge, Matyas Selmeci, Rob Gardner","submitted_at":"2019-05-16T17:14:44Z","abstract_excerpt":"Data distribution for opportunistic users is challenging as they neither own the computing resources they are using or any nearby storage. Users are motivated to use opportunistic computing to expand their data processing capacity, but they require storage and fast networking to distribute data to that processing. Since it requires significant management overhead, it is rare for resource providers to allow opportunistic access to storage. Additionally, in order to use opportunistic storage at several distributed sites, users assume the responsibility to maintain their data. In this paper we pr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.06911","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":"2026-05-17T23:45:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tu1bos38OeLjfafxRy6ZQsXKX41ei9Nic6e7Zgpd/vogsejr7qlVvD2sT5Qm4om54JIorQQMCxZ3e95ZEMMMBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T19:54:40.954614Z"},"content_sha256":"3f1a68fda3261ce70f43e4986118f7908be2902f268421f3b72ceee5e9bda4f7","schema_version":"1.0","event_id":"sha256:3f1a68fda3261ce70f43e4986118f7908be2902f268421f3b72ceee5e9bda4f7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CVAFY76HSVMY3W7BCGXVHKBKOL/bundle.json","state_url":"https://pith.science/pith/CVAFY76HSVMY3W7BCGXVHKBKOL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CVAFY76HSVMY3W7BCGXVHKBKOL/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":"2026-06-03T19:54:40Z","links":{"resolver":"https://pith.science/pith/CVAFY76HSVMY3W7BCGXVHKBKOL","bundle":"https://pith.science/pith/CVAFY76HSVMY3W7BCGXVHKBKOL/bundle.json","state":"https://pith.science/pith/CVAFY76HSVMY3W7BCGXVHKBKOL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CVAFY76HSVMY3W7BCGXVHKBKOL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:CVAFY76HSVMY3W7BCGXVHKBKOL","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":"dfb4eed55cba8d8e8a408ddfc0fe6c616f5873f7a81b5d29b2eddc2e58b5b995","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2019-05-16T17:14:44Z","title_canon_sha256":"6ee88ed9f81ef3130cc83e92c9be715fc92c72dac25c62448e559c3c7448e6d4"},"schema_version":"1.0","source":{"id":"1905.06911","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.06911","created_at":"2026-05-17T23:45:58Z"},{"alias_kind":"arxiv_version","alias_value":"1905.06911v1","created_at":"2026-05-17T23:45:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.06911","created_at":"2026-05-17T23:45:58Z"},{"alias_kind":"pith_short_12","alias_value":"CVAFY76HSVMY","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"CVAFY76HSVMY3W7B","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"CVAFY76H","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:3f1a68fda3261ce70f43e4986118f7908be2902f268421f3b72ceee5e9bda4f7","target":"graph","created_at":"2026-05-17T23:45:58Z","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":"Data distribution for opportunistic users is challenging as they neither own the computing resources they are using or any nearby storage. Users are motivated to use opportunistic computing to expand their data processing capacity, but they require storage and fast networking to distribute data to that processing. Since it requires significant management overhead, it is rare for resource providers to allow opportunistic access to storage. Additionally, in order to use opportunistic storage at several distributed sites, users assume the responsibility to maintain their data. In this paper we pr","authors_text":"Brian Bockelman, Brian Lin, Derek Weitzel, Edgar Fajardo Hernandez, Ilija Vukotic, Marian Zvada, Mats Rynge, Matyas Selmeci, Rob Gardner","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2019-05-16T17:14:44Z","title":"StashCache: A Distributed Caching Federation for the Open Science Grid"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.06911","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":"sha256:74f23288c310f505de3091e6e22f9f450435a4c0a62aec6ff304dc2174ffddf1","target":"record","created_at":"2026-05-17T23:45:58Z","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":"dfb4eed55cba8d8e8a408ddfc0fe6c616f5873f7a81b5d29b2eddc2e58b5b995","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2019-05-16T17:14:44Z","title_canon_sha256":"6ee88ed9f81ef3130cc83e92c9be715fc92c72dac25c62448e559c3c7448e6d4"},"schema_version":"1.0","source":{"id":"1905.06911","kind":"arxiv","version":1}},"canonical_sha256":"15405c7fc795598ddbe111af53a82a72ca59981da252e5cfca42b2e04394cc3e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15405c7fc795598ddbe111af53a82a72ca59981da252e5cfca42b2e04394cc3e","first_computed_at":"2026-05-17T23:45:58.542779Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:58.542779Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LpEBmAgYpMnmB/2xrikzFiGnQIrE56nHV1ThF/qjahB6Id9tV9w7LH8NG0JPTr04zeeo08NxWhelaDRHUbiTCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:58.543446Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.06911","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:74f23288c310f505de3091e6e22f9f450435a4c0a62aec6ff304dc2174ffddf1","sha256:3f1a68fda3261ce70f43e4986118f7908be2902f268421f3b72ceee5e9bda4f7"],"state_sha256":"cf00d32471401e4ff4e0de47442a798a9d8ffc4e6d980332cca2b367565e7160"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UCgZ/S5dB6WTmmSi/81n9yEtLIFw0pdSYt61HB+2SrVSRaaNv4EsiW+qBlpYzGdRXz1RE4+gWF8Zyr++7KuOBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T19:54:40.956879Z","bundle_sha256":"0376785a2529179ece53b6e36e0ad0d8d5cd60b92ac71df56d9080068738ce12"}}