{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:QNDEHPURPZKIBLHYVV2P7EVWN2","short_pith_number":"pith:QNDEHPUR","canonical_record":{"source":{"id":"1904.09351","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.SI","submitted_at":"2019-04-19T21:43:13Z","cross_cats_sorted":["math-ph","math.DG","math.MP"],"title_canon_sha256":"faa591777d044904ae790fb35afc2406971367f812605b650ab636acff790906","abstract_canon_sha256":"602982c35adbeed692de0482d47253d59d25a411519e009a0db9f3e629d10da1"},"schema_version":"1.0"},"canonical_sha256":"834643be917e5480acf8ad74ff92b66eba1d7c87ceac5ef23fb02dd66a193f54","source":{"kind":"arxiv","id":"1904.09351","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.09351","created_at":"2026-07-05T00:41:26Z"},{"alias_kind":"arxiv_version","alias_value":"1904.09351v2","created_at":"2026-07-05T00:41:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.09351","created_at":"2026-07-05T00:41:26Z"},{"alias_kind":"pith_short_12","alias_value":"QNDEHPURPZKI","created_at":"2026-07-05T00:41:26Z"},{"alias_kind":"pith_short_16","alias_value":"QNDEHPURPZKIBLHY","created_at":"2026-07-05T00:41:26Z"},{"alias_kind":"pith_short_8","alias_value":"QNDEHPUR","created_at":"2026-07-05T00:41:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:QNDEHPURPZKIBLHYVV2P7EVWN2","target":"record","payload":{"canonical_record":{"source":{"id":"1904.09351","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.SI","submitted_at":"2019-04-19T21:43:13Z","cross_cats_sorted":["math-ph","math.DG","math.MP"],"title_canon_sha256":"faa591777d044904ae790fb35afc2406971367f812605b650ab636acff790906","abstract_canon_sha256":"602982c35adbeed692de0482d47253d59d25a411519e009a0db9f3e629d10da1"},"schema_version":"1.0"},"canonical_sha256":"834643be917e5480acf8ad74ff92b66eba1d7c87ceac5ef23fb02dd66a193f54","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:41:26.423952Z","signature_b64":"q9E5DvnKOOM5Whh1Uorgixoq3uyS8A8tJL0PG3UXJtP19DiXqDUyFteU2tHeBi+QSBqiwRlZm1G5GS8bNFOwDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"834643be917e5480acf8ad74ff92b66eba1d7c87ceac5ef23fb02dd66a193f54","last_reissued_at":"2026-07-05T00:41:26.423476Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:41:26.423476Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.09351","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":"2026-07-05T00:41:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D3fjBwd8Sxlucncm/0T9UVlm85sPsxKPorLMiRSuDUYf28phdKUrtesBlMv4F0WyoSDWixN4ffdILt8q3ajQBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:38:04.570298Z"},"content_sha256":"7304127a0605fb6c0634f9551f57b7180bd07b3f169eeec4c2e8f9a1e622a8c8","schema_version":"1.0","event_id":"sha256:7304127a0605fb6c0634f9551f57b7180bd07b3f169eeec4c2e8f9a1e622a8c8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:QNDEHPURPZKIBLHYVV2P7EVWN2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Classification of integrable vector equations of geometric type","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math-ph","math.DG","math.MP"],"primary_cat":"nlin.SI","authors_text":"Anatoly Meshkov, Vladimir Sokolov","submitted_at":"2019-04-19T21:43:13Z","abstract_excerpt":"A complete classification of isotropic vector equations of the geometric type that possess higher symmetries is proposed. New examples of integrable multi-component systems of the geometric type and their auto-Backlund transformations are found."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.09351","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/1904.09351/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":"2026-07-05T00:41:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C4xLOxmWpSwLUbmVyb0/imPlD+CKWrAx2N9WhueqpEof9KnBh254uzuB6ZZeEsFT2yclI2PLQsi+/DWhOI4fDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:38:04.570681Z"},"content_sha256":"268b030270bd42b1859f0e266b0ae081afcef1d02b6554b966478de174d30251","schema_version":"1.0","event_id":"sha256:268b030270bd42b1859f0e266b0ae081afcef1d02b6554b966478de174d30251"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QNDEHPURPZKIBLHYVV2P7EVWN2/bundle.json","state_url":"https://pith.science/pith/QNDEHPURPZKIBLHYVV2P7EVWN2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QNDEHPURPZKIBLHYVV2P7EVWN2/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":"2026-07-07T11:38:04Z","links":{"resolver":"https://pith.science/pith/QNDEHPURPZKIBLHYVV2P7EVWN2","bundle":"https://pith.science/pith/QNDEHPURPZKIBLHYVV2P7EVWN2/bundle.json","state":"https://pith.science/pith/QNDEHPURPZKIBLHYVV2P7EVWN2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QNDEHPURPZKIBLHYVV2P7EVWN2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:QNDEHPURPZKIBLHYVV2P7EVWN2","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":"602982c35adbeed692de0482d47253d59d25a411519e009a0db9f3e629d10da1","cross_cats_sorted":["math-ph","math.DG","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.SI","submitted_at":"2019-04-19T21:43:13Z","title_canon_sha256":"faa591777d044904ae790fb35afc2406971367f812605b650ab636acff790906"},"schema_version":"1.0","source":{"id":"1904.09351","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.09351","created_at":"2026-07-05T00:41:26Z"},{"alias_kind":"arxiv_version","alias_value":"1904.09351v2","created_at":"2026-07-05T00:41:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.09351","created_at":"2026-07-05T00:41:26Z"},{"alias_kind":"pith_short_12","alias_value":"QNDEHPURPZKI","created_at":"2026-07-05T00:41:26Z"},{"alias_kind":"pith_short_16","alias_value":"QNDEHPURPZKIBLHY","created_at":"2026-07-05T00:41:26Z"},{"alias_kind":"pith_short_8","alias_value":"QNDEHPUR","created_at":"2026-07-05T00:41:26Z"}],"graph_snapshots":[{"event_id":"sha256:268b030270bd42b1859f0e266b0ae081afcef1d02b6554b966478de174d30251","target":"graph","created_at":"2026-07-05T00:41:26Z","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/1904.09351/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A complete classification of isotropic vector equations of the geometric type that possess higher symmetries is proposed. New examples of integrable multi-component systems of the geometric type and their auto-Backlund transformations are found.","authors_text":"Anatoly Meshkov, Vladimir Sokolov","cross_cats":["math-ph","math.DG","math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.SI","submitted_at":"2019-04-19T21:43:13Z","title":"Classification of integrable vector equations of geometric type"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.09351","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":"sha256:7304127a0605fb6c0634f9551f57b7180bd07b3f169eeec4c2e8f9a1e622a8c8","target":"record","created_at":"2026-07-05T00:41:26Z","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":"602982c35adbeed692de0482d47253d59d25a411519e009a0db9f3e629d10da1","cross_cats_sorted":["math-ph","math.DG","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.SI","submitted_at":"2019-04-19T21:43:13Z","title_canon_sha256":"faa591777d044904ae790fb35afc2406971367f812605b650ab636acff790906"},"schema_version":"1.0","source":{"id":"1904.09351","kind":"arxiv","version":2}},"canonical_sha256":"834643be917e5480acf8ad74ff92b66eba1d7c87ceac5ef23fb02dd66a193f54","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"834643be917e5480acf8ad74ff92b66eba1d7c87ceac5ef23fb02dd66a193f54","first_computed_at":"2026-07-05T00:41:26.423476Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:41:26.423476Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"q9E5DvnKOOM5Whh1Uorgixoq3uyS8A8tJL0PG3UXJtP19DiXqDUyFteU2tHeBi+QSBqiwRlZm1G5GS8bNFOwDw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:41:26.423952Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.09351","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7304127a0605fb6c0634f9551f57b7180bd07b3f169eeec4c2e8f9a1e622a8c8","sha256:268b030270bd42b1859f0e266b0ae081afcef1d02b6554b966478de174d30251"],"state_sha256":"e1c67157c96db876a80dafaf7a14a3df75febe3102d5d532316e9fe55298953c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gy/X4cEOB+FsWUGioRmc61uUm4aSf/MJiDqG8x+wqxK+JdOW5XX6cDRt/6Ly3lz2UlvLjgF/hHG5vWOVGdEJDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T11:38:04.572595Z","bundle_sha256":"c49b162e6adbda46503c5f507de38d73671ee5eb6e7b68b9aa8e452e197cdc60"}}