{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:TTPN56PEXG5PM2Q7MWBXHY3HDF","short_pith_number":"pith:TTPN56PE","canonical_record":{"source":{"id":"1809.06529","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.DC","submitted_at":"2018-09-18T04:47:43Z","cross_cats_sorted":[],"title_canon_sha256":"8c6fc663ba08edf85c6869c7160e1c770270276c3b56ded4870f70f84340161b","abstract_canon_sha256":"151f419d81373ff90df449e025583abdd792cd6705228245fa76a7e5aeac737f"},"schema_version":"1.0"},"canonical_sha256":"9cdedef9e4b9baf66a1f658373e367195c446758fe11a6ac5eef1c7f947ac812","source":{"kind":"arxiv","id":"1809.06529","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.06529","created_at":"2026-05-18T00:05:25Z"},{"alias_kind":"arxiv_version","alias_value":"1809.06529v1","created_at":"2026-05-18T00:05:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.06529","created_at":"2026-05-18T00:05:25Z"},{"alias_kind":"pith_short_12","alias_value":"TTPN56PEXG5P","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"TTPN56PEXG5PM2Q7","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"TTPN56PE","created_at":"2026-05-18T12:32:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:TTPN56PEXG5PM2Q7MWBXHY3HDF","target":"record","payload":{"canonical_record":{"source":{"id":"1809.06529","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.DC","submitted_at":"2018-09-18T04:47:43Z","cross_cats_sorted":[],"title_canon_sha256":"8c6fc663ba08edf85c6869c7160e1c770270276c3b56ded4870f70f84340161b","abstract_canon_sha256":"151f419d81373ff90df449e025583abdd792cd6705228245fa76a7e5aeac737f"},"schema_version":"1.0"},"canonical_sha256":"9cdedef9e4b9baf66a1f658373e367195c446758fe11a6ac5eef1c7f947ac812","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:05:25.489830Z","signature_b64":"2u8PdGn0sfRKSM4nl5ej3fWdt/e5MzXRaMEnqSOotRsuAnTMkej0HZbDE+IxEtcnfFV2ZylSnawWk0Jg7AguCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9cdedef9e4b9baf66a1f658373e367195c446758fe11a6ac5eef1c7f947ac812","last_reissued_at":"2026-05-18T00:05:25.489348Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:05:25.489348Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.06529","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":"2026-05-18T00:05:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ky59Upd0WdYcpbIAm0yOaow59DRPaMYv3fglT0cLhlKPZJKQC5No1jYv03VfNeZOX9MLkSqBBjmXLLTkk5PrAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T16:58:25.473602Z"},"content_sha256":"f0f5301427873ca023d683203a2acced838cf652d46e85460c47ec98a959d536","schema_version":"1.0","event_id":"sha256:f0f5301427873ca023d683203a2acced838cf652d46e85460c47ec98a959d536"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:TTPN56PEXG5PM2Q7MWBXHY3HDF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Performance Analysis and Modeling of Video Transcoding Using Heterogeneous Cloud Services","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.DC","authors_text":"Brad Landreneau, Magdy Bayoumi, Mahmoud Darwich, Mohsen Amini Salehi, Xiangbo Li, Yamini Joshi","submitted_at":"2018-09-18T04:47:43Z","abstract_excerpt":"High-quality video streaming, either in form of Video-On-Demand (VOD) or live streaming, usually requires converting (ie, transcoding) video streams to match the characteristics of viewers' devices (eg, in terms of spatial resolution or supported formats). Considering the computational cost of the transcoding operation and the surge in video streaming demands, Streaming Service Providers (SSPs) are becoming reliant on cloud services to guarantee Quality of Service (QoS) of streaming for their viewers. Cloud providers offer heterogeneous computational services in form of different types of Virt"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.06529","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":"2026-05-18T00:05:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jd5aL7+jKL3qbTjLt9XD5lIrPndhdMioEHBo3vo0iRWRyP1xQRUkdyjQVew9VaEIfi2e2TernTizEhrJnbSACQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T16:58:25.473949Z"},"content_sha256":"0ac87258ba49e27e96e7d64fcc16e4cd784914a47c69a1158bf836f7b78b957b","schema_version":"1.0","event_id":"sha256:0ac87258ba49e27e96e7d64fcc16e4cd784914a47c69a1158bf836f7b78b957b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TTPN56PEXG5PM2Q7MWBXHY3HDF/bundle.json","state_url":"https://pith.science/pith/TTPN56PEXG5PM2Q7MWBXHY3HDF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TTPN56PEXG5PM2Q7MWBXHY3HDF/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":"2026-06-01T16:58:25Z","links":{"resolver":"https://pith.science/pith/TTPN56PEXG5PM2Q7MWBXHY3HDF","bundle":"https://pith.science/pith/TTPN56PEXG5PM2Q7MWBXHY3HDF/bundle.json","state":"https://pith.science/pith/TTPN56PEXG5PM2Q7MWBXHY3HDF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TTPN56PEXG5PM2Q7MWBXHY3HDF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:TTPN56PEXG5PM2Q7MWBXHY3HDF","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":"151f419d81373ff90df449e025583abdd792cd6705228245fa76a7e5aeac737f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.DC","submitted_at":"2018-09-18T04:47:43Z","title_canon_sha256":"8c6fc663ba08edf85c6869c7160e1c770270276c3b56ded4870f70f84340161b"},"schema_version":"1.0","source":{"id":"1809.06529","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.06529","created_at":"2026-05-18T00:05:25Z"},{"alias_kind":"arxiv_version","alias_value":"1809.06529v1","created_at":"2026-05-18T00:05:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.06529","created_at":"2026-05-18T00:05:25Z"},{"alias_kind":"pith_short_12","alias_value":"TTPN56PEXG5P","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"TTPN56PEXG5PM2Q7","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"TTPN56PE","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:0ac87258ba49e27e96e7d64fcc16e4cd784914a47c69a1158bf836f7b78b957b","target":"graph","created_at":"2026-05-18T00:05:25Z","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-quality video streaming, either in form of Video-On-Demand (VOD) or live streaming, usually requires converting (ie, transcoding) video streams to match the characteristics of viewers' devices (eg, in terms of spatial resolution or supported formats). Considering the computational cost of the transcoding operation and the surge in video streaming demands, Streaming Service Providers (SSPs) are becoming reliant on cloud services to guarantee Quality of Service (QoS) of streaming for their viewers. Cloud providers offer heterogeneous computational services in form of different types of Virt","authors_text":"Brad Landreneau, Magdy Bayoumi, Mahmoud Darwich, Mohsen Amini Salehi, Xiangbo Li, Yamini Joshi","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.DC","submitted_at":"2018-09-18T04:47:43Z","title":"Performance Analysis and Modeling of Video Transcoding Using Heterogeneous Cloud Services"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.06529","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:f0f5301427873ca023d683203a2acced838cf652d46e85460c47ec98a959d536","target":"record","created_at":"2026-05-18T00:05:25Z","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":"151f419d81373ff90df449e025583abdd792cd6705228245fa76a7e5aeac737f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.DC","submitted_at":"2018-09-18T04:47:43Z","title_canon_sha256":"8c6fc663ba08edf85c6869c7160e1c770270276c3b56ded4870f70f84340161b"},"schema_version":"1.0","source":{"id":"1809.06529","kind":"arxiv","version":1}},"canonical_sha256":"9cdedef9e4b9baf66a1f658373e367195c446758fe11a6ac5eef1c7f947ac812","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9cdedef9e4b9baf66a1f658373e367195c446758fe11a6ac5eef1c7f947ac812","first_computed_at":"2026-05-18T00:05:25.489348Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:05:25.489348Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2u8PdGn0sfRKSM4nl5ej3fWdt/e5MzXRaMEnqSOotRsuAnTMkej0HZbDE+IxEtcnfFV2ZylSnawWk0Jg7AguCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:05:25.489830Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.06529","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f0f5301427873ca023d683203a2acced838cf652d46e85460c47ec98a959d536","sha256:0ac87258ba49e27e96e7d64fcc16e4cd784914a47c69a1158bf836f7b78b957b"],"state_sha256":"c8b54356c390b475094a0794595ff1a8dc846a31400ad55192543449e28001f8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7JnN9VIjteIUN13Dn2PEYMTTj4oK/xZfgQx0pYYkHRT2c4DRBoDdQ9PM9v0CZOMzjfr17SGMJBkpOZ69LqbtCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T16:58:25.475954Z","bundle_sha256":"8bb8fea92316ea78c4ae51b936120220f0b9fbeb8650db9f1f1d99924d2343b0"}}