{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:TARS7F7LEBY37JG6FTTC6ZVEI6","short_pith_number":"pith:TARS7F7L","canonical_record":{"source":{"id":"2112.11122","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2021-12-21T11:51:51Z","cross_cats_sorted":["eess.AS"],"title_canon_sha256":"0c497bb777f4470724c1f83171db85ea386c9188c9b66fb7ccb1f36f9f486def","abstract_canon_sha256":"6731d6098da1ed8bd59d4491757e5a1ba5e7a8cf9c4f50e50492afaa25a3cfdd"},"schema_version":"1.0"},"canonical_sha256":"98232f97eb2071bfa4de2ce62f66a447a57e35cacfd8f110c1e7a59c27fc94a5","source":{"kind":"arxiv","id":"2112.11122","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.11122","created_at":"2026-07-05T07:19:16Z"},{"alias_kind":"arxiv_version","alias_value":"2112.11122v3","created_at":"2026-07-05T07:19:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.11122","created_at":"2026-07-05T07:19:16Z"},{"alias_kind":"pith_short_12","alias_value":"TARS7F7LEBY3","created_at":"2026-07-05T07:19:16Z"},{"alias_kind":"pith_short_16","alias_value":"TARS7F7LEBY37JG6","created_at":"2026-07-05T07:19:16Z"},{"alias_kind":"pith_short_8","alias_value":"TARS7F7L","created_at":"2026-07-05T07:19:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:TARS7F7LEBY37JG6FTTC6ZVEI6","target":"record","payload":{"canonical_record":{"source":{"id":"2112.11122","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2021-12-21T11:51:51Z","cross_cats_sorted":["eess.AS"],"title_canon_sha256":"0c497bb777f4470724c1f83171db85ea386c9188c9b66fb7ccb1f36f9f486def","abstract_canon_sha256":"6731d6098da1ed8bd59d4491757e5a1ba5e7a8cf9c4f50e50492afaa25a3cfdd"},"schema_version":"1.0"},"canonical_sha256":"98232f97eb2071bfa4de2ce62f66a447a57e35cacfd8f110c1e7a59c27fc94a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:19:16.049665Z","signature_b64":"dsy0qWGKiVtpwtVufDQQj01SrpEX9+Mp8EejbDaPtCVJMIM79V6KU//l60RLxNC650BDRZYf2FwR/Cy6j266AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"98232f97eb2071bfa4de2ce62f66a447a57e35cacfd8f110c1e7a59c27fc94a5","last_reissued_at":"2026-07-05T07:19:16.049199Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:19:16.049199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.11122","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:19:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ihgy6fZOsLSLNB/Pp8EF4LwRm1An0gQIX4RB5EIvL+wIGh0+vKGN5c7Gzw3l/VYnnwjPmQEf9+R4T/YWVA+NBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T22:35:38.758180Z"},"content_sha256":"9d4c76c32c6220d61bec87fb803cb287dc1bfb8aa2143f3856b0fbcde81f2757","schema_version":"1.0","event_id":"sha256:9d4c76c32c6220d61bec87fb803cb287dc1bfb8aa2143f3856b0fbcde81f2757"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:TARS7F7LEBY37JG6FTTC6ZVEI6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Generating Chord Progression from Melody with Flexible Harmonic Rhythm and Controllable Harmonic Density","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["eess.AS"],"primary_cat":"cs.SD","authors_text":"Maosong Sun, Shangda Wu, Xiaobing Li, Yue Yang, Zhaowen Wang","submitted_at":"2021-12-21T11:51:51Z","abstract_excerpt":"Melody harmonization, which involves generating a chord progression that complements a user-provided melody, continues to pose a significant challenge. A chord progression must not only be in harmony with the melody, but also interdependent on its rhythmic pattern. While previous neural network-based systems have been successful in producing chord progressions for given melodies, they have not adequately addressed controllable melody harmonization, nor have they focused on generating harmonic rhythms with flexibility in the rates or patterns of chord changes. This paper presents AutoHarmonizer"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.11122","kind":"arxiv","version":3},"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/2112.11122/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":"2026-07-05T07:19:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Exn/ZiePaFRgI0xG4WbQmWEk4nhPHzJWUEISBADzdvs5NukNqUE+0/GNddentOf6bLzyWD0YzUZWs3CWz9MWBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T22:35:38.758765Z"},"content_sha256":"b51e59d6d338e9e3f6fad15ff546db7a58f8ff9900b54f09a1a55c1e40127ba0","schema_version":"1.0","event_id":"sha256:b51e59d6d338e9e3f6fad15ff546db7a58f8ff9900b54f09a1a55c1e40127ba0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TARS7F7LEBY37JG6FTTC6ZVEI6/bundle.json","state_url":"https://pith.science/pith/TARS7F7LEBY37JG6FTTC6ZVEI6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TARS7F7LEBY37JG6FTTC6ZVEI6/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":"2026-08-23T22:35:38Z","links":{"resolver":"https://pith.science/pith/TARS7F7LEBY37JG6FTTC6ZVEI6","bundle":"https://pith.science/pith/TARS7F7LEBY37JG6FTTC6ZVEI6/bundle.json","state":"https://pith.science/pith/TARS7F7LEBY37JG6FTTC6ZVEI6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TARS7F7LEBY37JG6FTTC6ZVEI6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:TARS7F7LEBY37JG6FTTC6ZVEI6","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":"6731d6098da1ed8bd59d4491757e5a1ba5e7a8cf9c4f50e50492afaa25a3cfdd","cross_cats_sorted":["eess.AS"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2021-12-21T11:51:51Z","title_canon_sha256":"0c497bb777f4470724c1f83171db85ea386c9188c9b66fb7ccb1f36f9f486def"},"schema_version":"1.0","source":{"id":"2112.11122","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.11122","created_at":"2026-07-05T07:19:16Z"},{"alias_kind":"arxiv_version","alias_value":"2112.11122v3","created_at":"2026-07-05T07:19:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.11122","created_at":"2026-07-05T07:19:16Z"},{"alias_kind":"pith_short_12","alias_value":"TARS7F7LEBY3","created_at":"2026-07-05T07:19:16Z"},{"alias_kind":"pith_short_16","alias_value":"TARS7F7LEBY37JG6","created_at":"2026-07-05T07:19:16Z"},{"alias_kind":"pith_short_8","alias_value":"TARS7F7L","created_at":"2026-07-05T07:19:16Z"}],"graph_snapshots":[{"event_id":"sha256:b51e59d6d338e9e3f6fad15ff546db7a58f8ff9900b54f09a1a55c1e40127ba0","target":"graph","created_at":"2026-07-05T07:19:16Z","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/2112.11122/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Melody harmonization, which involves generating a chord progression that complements a user-provided melody, continues to pose a significant challenge. A chord progression must not only be in harmony with the melody, but also interdependent on its rhythmic pattern. While previous neural network-based systems have been successful in producing chord progressions for given melodies, they have not adequately addressed controllable melody harmonization, nor have they focused on generating harmonic rhythms with flexibility in the rates or patterns of chord changes. This paper presents AutoHarmonizer","authors_text":"Maosong Sun, Shangda Wu, Xiaobing Li, Yue Yang, Zhaowen Wang","cross_cats":["eess.AS"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2021-12-21T11:51:51Z","title":"Generating Chord Progression from Melody with Flexible Harmonic Rhythm and Controllable Harmonic Density"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.11122","kind":"arxiv","version":3},"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":"sha256:9d4c76c32c6220d61bec87fb803cb287dc1bfb8aa2143f3856b0fbcde81f2757","target":"record","created_at":"2026-07-05T07:19:16Z","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":"6731d6098da1ed8bd59d4491757e5a1ba5e7a8cf9c4f50e50492afaa25a3cfdd","cross_cats_sorted":["eess.AS"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2021-12-21T11:51:51Z","title_canon_sha256":"0c497bb777f4470724c1f83171db85ea386c9188c9b66fb7ccb1f36f9f486def"},"schema_version":"1.0","source":{"id":"2112.11122","kind":"arxiv","version":3}},"canonical_sha256":"98232f97eb2071bfa4de2ce62f66a447a57e35cacfd8f110c1e7a59c27fc94a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"98232f97eb2071bfa4de2ce62f66a447a57e35cacfd8f110c1e7a59c27fc94a5","first_computed_at":"2026-07-05T07:19:16.049199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:19:16.049199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dsy0qWGKiVtpwtVufDQQj01SrpEX9+Mp8EejbDaPtCVJMIM79V6KU//l60RLxNC650BDRZYf2FwR/Cy6j266AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:19:16.049665Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.11122","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d4c76c32c6220d61bec87fb803cb287dc1bfb8aa2143f3856b0fbcde81f2757","sha256:b51e59d6d338e9e3f6fad15ff546db7a58f8ff9900b54f09a1a55c1e40127ba0"],"state_sha256":"7708fd2c5b2c1860aa930f907f563eb211490b332dfc6dc7e04f91428ecbd216"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bjddIRWOnNq3f2JD3PdZkbxJEyQRhfPEC2ZPKyvZNuycx+7tvRFFsNPPR7JIP9EtGwFHr8gU2d7zG1y38tYOBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T22:35:38.762415Z","bundle_sha256":"8527158c73aeea55c9466d7a7ba4e7ef75a9c138332a2351bf11e918534363c0"}}