{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:NBMVQG2HQW54NKYAB3C3JMQCUR","short_pith_number":"pith:NBMVQG2H","canonical_record":{"source":{"id":"1903.04077","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2019-03-10T23:43:00Z","cross_cats_sorted":[],"title_canon_sha256":"eaf5375e3e4f9b57a12ade1142b662d0c285625eb55ace4e761f903a776a790e","abstract_canon_sha256":"dee8aff6473a78f5f076b9f613807c3aa8018ec07a468830f3fdd0dd9fad9e3a"},"schema_version":"1.0"},"canonical_sha256":"6859581b4785bbc6ab000ec5b4b202a47fbc7af40a802d917a140eea59fd727e","source":{"kind":"arxiv","id":"1903.04077","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.04077","created_at":"2026-05-17T23:50:40Z"},{"alias_kind":"arxiv_version","alias_value":"1903.04077v2","created_at":"2026-05-17T23:50:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.04077","created_at":"2026-05-17T23:50:40Z"},{"alias_kind":"pith_short_12","alias_value":"NBMVQG2HQW54","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NBMVQG2HQW54NKYA","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NBMVQG2H","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:NBMVQG2HQW54NKYAB3C3JMQCUR","target":"record","payload":{"canonical_record":{"source":{"id":"1903.04077","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2019-03-10T23:43:00Z","cross_cats_sorted":[],"title_canon_sha256":"eaf5375e3e4f9b57a12ade1142b662d0c285625eb55ace4e761f903a776a790e","abstract_canon_sha256":"dee8aff6473a78f5f076b9f613807c3aa8018ec07a468830f3fdd0dd9fad9e3a"},"schema_version":"1.0"},"canonical_sha256":"6859581b4785bbc6ab000ec5b4b202a47fbc7af40a802d917a140eea59fd727e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:40.580734Z","signature_b64":"j/c/JcSkhKoKvDCKXdS1oZOZ//bbbcfagJzfCnFV4oKHz8mH8yHL/DJClyNJqzavcXH+4+jPtYGdMSt1v0fWCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6859581b4785bbc6ab000ec5b4b202a47fbc7af40a802d917a140eea59fd727e","last_reissued_at":"2026-05-17T23:50:40.580090Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:40.580090Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.04077","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":"2026-05-17T23:50:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+PbnMvod+cm8UdyvaDbDvCUbfecGxMju6QAdNpiX1hHiF3DM6cawct5xqhnqolVW2qnSvOxUI/tWfLk+5xMXDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T17:42:48.148404Z"},"content_sha256":"8f8b441b78806b8422463c9b082988f1ad357b57e116666fa44923c42b76a9e9","schema_version":"1.0","event_id":"sha256:8f8b441b78806b8422463c9b082988f1ad357b57e116666fa44923c42b76a9e9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:NBMVQG2HQW54NKYAB3C3JMQCUR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sidechains and interoperability","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"John Brainard, Peter Robinson, Sandra Johnson","submitted_at":"2019-03-10T23:43:00Z","abstract_excerpt":"There appears to be an insatiable desire for spawning new bespoke blockchains to harness the functionality provided by blockchain technologies, resulting in a constant stream of blockchain start-up companies entering the market with their own unique vision and mission. Some target a particular niche market such as supply chain and financial services, while others strive to differentiate themselves from the increasingly saturated market by offering new functionality. This dynamic and constantly changing blockchain ecosystem makes it very challenging to keep abreast of all the latest breakthroug"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.04077","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":""},"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":"2026-05-17T23:50:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iToN3xqKlnW9ZP3NHL31JSkYGlL7Q3+WppZ/OsEYTUrAvhfaUNpPFG1lN0PavqzMas09zZqL/CG55wjH5+xnAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T17:42:48.149073Z"},"content_sha256":"c6577307898826900c7c07a8f176dd4000b802b5d8f80842dbcc13cacbbca228","schema_version":"1.0","event_id":"sha256:c6577307898826900c7c07a8f176dd4000b802b5d8f80842dbcc13cacbbca228"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NBMVQG2HQW54NKYAB3C3JMQCUR/bundle.json","state_url":"https://pith.science/pith/NBMVQG2HQW54NKYAB3C3JMQCUR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NBMVQG2HQW54NKYAB3C3JMQCUR/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":"2026-06-11T17:42:48Z","links":{"resolver":"https://pith.science/pith/NBMVQG2HQW54NKYAB3C3JMQCUR","bundle":"https://pith.science/pith/NBMVQG2HQW54NKYAB3C3JMQCUR/bundle.json","state":"https://pith.science/pith/NBMVQG2HQW54NKYAB3C3JMQCUR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NBMVQG2HQW54NKYAB3C3JMQCUR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:NBMVQG2HQW54NKYAB3C3JMQCUR","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":"dee8aff6473a78f5f076b9f613807c3aa8018ec07a468830f3fdd0dd9fad9e3a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2019-03-10T23:43:00Z","title_canon_sha256":"eaf5375e3e4f9b57a12ade1142b662d0c285625eb55ace4e761f903a776a790e"},"schema_version":"1.0","source":{"id":"1903.04077","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.04077","created_at":"2026-05-17T23:50:40Z"},{"alias_kind":"arxiv_version","alias_value":"1903.04077v2","created_at":"2026-05-17T23:50:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.04077","created_at":"2026-05-17T23:50:40Z"},{"alias_kind":"pith_short_12","alias_value":"NBMVQG2HQW54","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NBMVQG2HQW54NKYA","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NBMVQG2H","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:c6577307898826900c7c07a8f176dd4000b802b5d8f80842dbcc13cacbbca228","target":"graph","created_at":"2026-05-17T23:50:40Z","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":"There appears to be an insatiable desire for spawning new bespoke blockchains to harness the functionality provided by blockchain technologies, resulting in a constant stream of blockchain start-up companies entering the market with their own unique vision and mission. Some target a particular niche market such as supply chain and financial services, while others strive to differentiate themselves from the increasingly saturated market by offering new functionality. This dynamic and constantly changing blockchain ecosystem makes it very challenging to keep abreast of all the latest breakthroug","authors_text":"John Brainard, Peter Robinson, Sandra Johnson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2019-03-10T23:43:00Z","title":"Sidechains and interoperability"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.04077","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":"sha256:8f8b441b78806b8422463c9b082988f1ad357b57e116666fa44923c42b76a9e9","target":"record","created_at":"2026-05-17T23:50:40Z","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":"dee8aff6473a78f5f076b9f613807c3aa8018ec07a468830f3fdd0dd9fad9e3a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2019-03-10T23:43:00Z","title_canon_sha256":"eaf5375e3e4f9b57a12ade1142b662d0c285625eb55ace4e761f903a776a790e"},"schema_version":"1.0","source":{"id":"1903.04077","kind":"arxiv","version":2}},"canonical_sha256":"6859581b4785bbc6ab000ec5b4b202a47fbc7af40a802d917a140eea59fd727e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6859581b4785bbc6ab000ec5b4b202a47fbc7af40a802d917a140eea59fd727e","first_computed_at":"2026-05-17T23:50:40.580090Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:40.580090Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j/c/JcSkhKoKvDCKXdS1oZOZ//bbbcfagJzfCnFV4oKHz8mH8yHL/DJClyNJqzavcXH+4+jPtYGdMSt1v0fWCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:40.580734Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.04077","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8f8b441b78806b8422463c9b082988f1ad357b57e116666fa44923c42b76a9e9","sha256:c6577307898826900c7c07a8f176dd4000b802b5d8f80842dbcc13cacbbca228"],"state_sha256":"5135b917c9117a877871619d15f9407282b0cbe7438b58f42d6c95c3bf58ef70"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lRS/ZCLolVfDyIeuK20B5qL19qyNhvXdElrHVbRMQSBz1Xt19Oxs8UC2v2bog7XbpgWLNND30IQcY5b3OvCcCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T17:42:48.153480Z","bundle_sha256":"fc6a3d63400a9d5f914a576604e8f75668c968636fb61d5237a1ebc4789296e3"}}