{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:HKY53WW4XIPSOAPYEWPIHNKUA4","short_pith_number":"pith:HKY53WW4","canonical_record":{"source":{"id":"1902.09581","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-02-25T19:36:25Z","cross_cats_sorted":["cs.MM"],"title_canon_sha256":"7b12ff26b4c503966a268406e7130c647e56be5fdd34149ba832219dc69834b6","abstract_canon_sha256":"06df673a530235f79f2cea7783cb3ff9862376a2ce01a1f11444d160b441b74c"},"schema_version":"1.0"},"canonical_sha256":"3ab1dddadcba1f2701f8259e83b5540712262b05aed0f8ed776d06129d3fb9da","source":{"kind":"arxiv","id":"1902.09581","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.09581","created_at":"2026-07-05T00:14:53Z"},{"alias_kind":"arxiv_version","alias_value":"1902.09581v2","created_at":"2026-07-05T00:14:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.09581","created_at":"2026-07-05T00:14:53Z"},{"alias_kind":"pith_short_12","alias_value":"HKY53WW4XIPS","created_at":"2026-07-05T00:14:53Z"},{"alias_kind":"pith_short_16","alias_value":"HKY53WW4XIPSOAPY","created_at":"2026-07-05T00:14:53Z"},{"alias_kind":"pith_short_8","alias_value":"HKY53WW4","created_at":"2026-07-05T00:14:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:HKY53WW4XIPSOAPYEWPIHNKUA4","target":"record","payload":{"canonical_record":{"source":{"id":"1902.09581","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-02-25T19:36:25Z","cross_cats_sorted":["cs.MM"],"title_canon_sha256":"7b12ff26b4c503966a268406e7130c647e56be5fdd34149ba832219dc69834b6","abstract_canon_sha256":"06df673a530235f79f2cea7783cb3ff9862376a2ce01a1f11444d160b441b74c"},"schema_version":"1.0"},"canonical_sha256":"3ab1dddadcba1f2701f8259e83b5540712262b05aed0f8ed776d06129d3fb9da","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:14:53.828631Z","signature_b64":"BkdGQ/XsmRgXNTT/H8HUH04cZe9FOoGbZpsgT6KOHned1o1cf9qPonfri3H8YCCG7yx8M9RlFg419FA0wxRbBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3ab1dddadcba1f2701f8259e83b5540712262b05aed0f8ed776d06129d3fb9da","last_reissued_at":"2026-07-05T00:14:53.828158Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:14:53.828158Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.09581","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":"2026-07-05T00:14:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p0KcDB4y0M9Vvs1zo2IEgmYscbeJH+9hKFj+sfi6UdEJhgH+yRMr/hzNE32u6bDg1+XPPFL/Lz+hOjp9FpmiAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T06:27:18.286366Z"},"content_sha256":"b7205f9306fbb3efa0fbe17a91a348d22b3fdc5b29f0504cc4cf48c60f46f0b7","schema_version":"1.0","event_id":"sha256:b7205f9306fbb3efa0fbe17a91a348d22b3fdc5b29f0504cc4cf48c60f46f0b7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:HKY53WW4XIPSOAPYEWPIHNKUA4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tile-Based Joint Caching and Delivery of $360^o$ Videos in Heterogeneous Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.MM"],"primary_cat":"cs.NI","authors_text":"Eirina Bourtsoulatze, Nikolaos Thomos, Pantelis Maniotis","submitted_at":"2019-02-25T19:36:25Z","abstract_excerpt":"The recent surge of applications involving the use of $360^o$ video challenges mobile networks infrastructure, as $360^o$ video files are of significant size, and current delivery and edge caching architectures are unable to guarantee their timely delivery. In this paper, we investigate the problem of joint collaborative content-aware caching and delivery of $360^o$ videos in a video on demand setting. The proposed scheme takes advantage of $360^o$ video encoding in multiple tiles and layers to make fine-grained decisions regarding which tiles to cache in each Small Base Station (SBS), and whe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.09581","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1902.09581/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:14:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xf9C8daNNa+5+mnKHoRuJJYvLtVDL4p601dvbDF/9b1s0b2chaY0oHbarw0pFw9O9hZXGxJsmuH2m7F1eo+aCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T06:27:18.286984Z"},"content_sha256":"685a5fa5d07c874b53b595a9d3b5fbe78c31ef438409c45b75f41f6feb92e065","schema_version":"1.0","event_id":"sha256:685a5fa5d07c874b53b595a9d3b5fbe78c31ef438409c45b75f41f6feb92e065"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HKY53WW4XIPSOAPYEWPIHNKUA4/bundle.json","state_url":"https://pith.science/pith/HKY53WW4XIPSOAPYEWPIHNKUA4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HKY53WW4XIPSOAPYEWPIHNKUA4/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":"2026-07-07T06:27:18Z","links":{"resolver":"https://pith.science/pith/HKY53WW4XIPSOAPYEWPIHNKUA4","bundle":"https://pith.science/pith/HKY53WW4XIPSOAPYEWPIHNKUA4/bundle.json","state":"https://pith.science/pith/HKY53WW4XIPSOAPYEWPIHNKUA4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HKY53WW4XIPSOAPYEWPIHNKUA4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:HKY53WW4XIPSOAPYEWPIHNKUA4","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":"06df673a530235f79f2cea7783cb3ff9862376a2ce01a1f11444d160b441b74c","cross_cats_sorted":["cs.MM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-02-25T19:36:25Z","title_canon_sha256":"7b12ff26b4c503966a268406e7130c647e56be5fdd34149ba832219dc69834b6"},"schema_version":"1.0","source":{"id":"1902.09581","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.09581","created_at":"2026-07-05T00:14:53Z"},{"alias_kind":"arxiv_version","alias_value":"1902.09581v2","created_at":"2026-07-05T00:14:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.09581","created_at":"2026-07-05T00:14:53Z"},{"alias_kind":"pith_short_12","alias_value":"HKY53WW4XIPS","created_at":"2026-07-05T00:14:53Z"},{"alias_kind":"pith_short_16","alias_value":"HKY53WW4XIPSOAPY","created_at":"2026-07-05T00:14:53Z"},{"alias_kind":"pith_short_8","alias_value":"HKY53WW4","created_at":"2026-07-05T00:14:53Z"}],"graph_snapshots":[{"event_id":"sha256:685a5fa5d07c874b53b595a9d3b5fbe78c31ef438409c45b75f41f6feb92e065","target":"graph","created_at":"2026-07-05T00:14:53Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1902.09581/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The recent surge of applications involving the use of $360^o$ video challenges mobile networks infrastructure, as $360^o$ video files are of significant size, and current delivery and edge caching architectures are unable to guarantee their timely delivery. In this paper, we investigate the problem of joint collaborative content-aware caching and delivery of $360^o$ videos in a video on demand setting. The proposed scheme takes advantage of $360^o$ video encoding in multiple tiles and layers to make fine-grained decisions regarding which tiles to cache in each Small Base Station (SBS), and whe","authors_text":"Eirina Bourtsoulatze, Nikolaos Thomos, Pantelis Maniotis","cross_cats":["cs.MM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-02-25T19:36:25Z","title":"Tile-Based Joint Caching and Delivery of $360^o$ Videos in Heterogeneous Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.09581","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:b7205f9306fbb3efa0fbe17a91a348d22b3fdc5b29f0504cc4cf48c60f46f0b7","target":"record","created_at":"2026-07-05T00:14:53Z","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":"06df673a530235f79f2cea7783cb3ff9862376a2ce01a1f11444d160b441b74c","cross_cats_sorted":["cs.MM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-02-25T19:36:25Z","title_canon_sha256":"7b12ff26b4c503966a268406e7130c647e56be5fdd34149ba832219dc69834b6"},"schema_version":"1.0","source":{"id":"1902.09581","kind":"arxiv","version":2}},"canonical_sha256":"3ab1dddadcba1f2701f8259e83b5540712262b05aed0f8ed776d06129d3fb9da","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3ab1dddadcba1f2701f8259e83b5540712262b05aed0f8ed776d06129d3fb9da","first_computed_at":"2026-07-05T00:14:53.828158Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:14:53.828158Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BkdGQ/XsmRgXNTT/H8HUH04cZe9FOoGbZpsgT6KOHned1o1cf9qPonfri3H8YCCG7yx8M9RlFg419FA0wxRbBw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:14:53.828631Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.09581","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b7205f9306fbb3efa0fbe17a91a348d22b3fdc5b29f0504cc4cf48c60f46f0b7","sha256:685a5fa5d07c874b53b595a9d3b5fbe78c31ef438409c45b75f41f6feb92e065"],"state_sha256":"f7acc17cdb6e710e14efcb570f979591177ba0e067741e01f4f010b6ff11f13a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ed67UzkHeRpx+vzTMJC6xpaj1bnfnAEsX1Udjy0N8hT1OyT4y4qwoP8sTNLzDSONqA0vv+rs4xh2QuJNtPgJCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T06:27:18.290302Z","bundle_sha256":"cf3aabb2dc9688e0f06e8bb3bdff302a15a5e91a6a24e1579b47ab2076a01e6a"}}