{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BGCM4YMQNBOI65SQK3NTFBMQWQ","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":"0e7528298edca7150fdfddbfacdaa985ae39e185b64be2c0388d90f88adb7871","cross_cats_sorted":["math.MP","nlin.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2018-03-15T15:37:14Z","title_canon_sha256":"916c1f903f1a3d175d18cbd0f27e4ae0bbeef94d827f6e0e474dc1cec106246b"},"schema_version":"1.0","source":{"id":"1803.05813","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.05813","created_at":"2026-05-18T00:09:26Z"},{"alias_kind":"arxiv_version","alias_value":"1803.05813v1","created_at":"2026-05-18T00:09:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.05813","created_at":"2026-05-18T00:09:26Z"},{"alias_kind":"pith_short_12","alias_value":"BGCM4YMQNBOI","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BGCM4YMQNBOI65SQ","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BGCM4YMQ","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:3026490b5cbac7145d7b140785ea984e3155d63ab669a624715782a1fc950a91","target":"graph","created_at":"2026-05-18T00:09:26Z","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"},"paper":{"abstract_excerpt":"We show that a natural discretisation of Virasoro algebra yields a quantum integrable model which is the Toda chain in the second Hamiltonian structure.","authors_text":"K. K. Kozlowski, O. Babelon, V. Pasquier","cross_cats":["math.MP","nlin.SI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2018-03-15T15:37:14Z","title":"The Toda$_2$ chain"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.05813","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":"sha256:286409b956cd1dd8ebf654c881df83406a6b3b04dd309c9adf134d9d2506c3f8","target":"record","created_at":"2026-05-18T00:09:26Z","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":"0e7528298edca7150fdfddbfacdaa985ae39e185b64be2c0388d90f88adb7871","cross_cats_sorted":["math.MP","nlin.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2018-03-15T15:37:14Z","title_canon_sha256":"916c1f903f1a3d175d18cbd0f27e4ae0bbeef94d827f6e0e474dc1cec106246b"},"schema_version":"1.0","source":{"id":"1803.05813","kind":"arxiv","version":1}},"canonical_sha256":"0984ce6190685c8f765056db328590b40fe836d5a55faca67bc2a61bccda17bb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0984ce6190685c8f765056db328590b40fe836d5a55faca67bc2a61bccda17bb","first_computed_at":"2026-05-18T00:09:26.648081Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:26.648081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p6Cn29/VRCI29asDN5SS4wKGZDia+wGuRYynQku0ajcXtjpyPKqXg/F+U5w/Zl4Nhw9ldufartOSbg7ZLXwEBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:26.648709Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.05813","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:286409b956cd1dd8ebf654c881df83406a6b3b04dd309c9adf134d9d2506c3f8","sha256:3026490b5cbac7145d7b140785ea984e3155d63ab669a624715782a1fc950a91"],"state_sha256":"03c5c7f813bb5415b49cbe3f5d2cdf1975aeb7eefb4a4bd3e501253f02a90d1b"}