{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:2V4GXZRPFYG7MC44FX3UCMX5J2","short_pith_number":"pith:2V4GXZRP","canonical_record":{"source":{"id":"2608.03117","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-08-04T04:39:14Z","cross_cats_sorted":[],"title_canon_sha256":"0cdf08a11b7c5309a98388688b484143d4bee554849c2778563a2c8e8a529532","abstract_canon_sha256":"4eddb8e7c81d48020aa74899f09e406fd61a4e358ef09eb0d5fa8f20ab6f3e14"},"schema_version":"1.0"},"canonical_sha256":"d5786be62f2e0df60b9c2df74132fd4ea4235112ad28f5a8b61ae1dbc5558d89","source":{"kind":"arxiv","id":"2608.03117","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.03117","created_at":"2026-08-05T00:45:43Z"},{"alias_kind":"arxiv_version","alias_value":"2608.03117v1","created_at":"2026-08-05T00:45:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.03117","created_at":"2026-08-05T00:45:43Z"},{"alias_kind":"pith_short_12","alias_value":"2V4GXZRPFYG7","created_at":"2026-08-05T00:45:43Z"},{"alias_kind":"pith_short_16","alias_value":"2V4GXZRPFYG7MC44","created_at":"2026-08-05T00:45:43Z"},{"alias_kind":"pith_short_8","alias_value":"2V4GXZRP","created_at":"2026-08-05T00:45:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:2V4GXZRPFYG7MC44FX3UCMX5J2","target":"record","payload":{"canonical_record":{"source":{"id":"2608.03117","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-08-04T04:39:14Z","cross_cats_sorted":[],"title_canon_sha256":"0cdf08a11b7c5309a98388688b484143d4bee554849c2778563a2c8e8a529532","abstract_canon_sha256":"4eddb8e7c81d48020aa74899f09e406fd61a4e358ef09eb0d5fa8f20ab6f3e14"},"schema_version":"1.0"},"canonical_sha256":"d5786be62f2e0df60b9c2df74132fd4ea4235112ad28f5a8b61ae1dbc5558d89","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-05T00:45:43.404358Z","signature_b64":"gjNJfl8I7gNsTWRNpHSKDrkUQrDhqQgeNU8kEu++h84AuVmTJ3qWZHrJp7TbKc9L5XNRiOsSl1ax9q8khxxuBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d5786be62f2e0df60b9c2df74132fd4ea4235112ad28f5a8b61ae1dbc5558d89","last_reissued_at":"2026-08-05T00:45:43.401952Z","signature_status":"signed_v1","first_computed_at":"2026-08-05T00:45:43.401952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.03117","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":"2026-08-05T00:45:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qxvtGneuDbTcFFFX1hkZRZ2HYhSBjAECZkWAHIpqi+C6tYFiTg3xLCHMuxXwc5CWFxmkKeQ3DW7ULAAcIqysDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T07:51:54.583748Z"},"content_sha256":"cb6aa6d096df92b687e6a00986871c2f5134bf5834fab22bee5af7eb3c2bed2a","schema_version":"1.0","event_id":"sha256:cb6aa6d096df92b687e6a00986871c2f5134bf5834fab22bee5af7eb3c2bed2a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:2V4GXZRPFYG7MC44FX3UCMX5J2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simulation-free and finite-time diffusion model","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.LG","authors_text":"Kentaro Kaba, Masayuki Ohzeki, Yuki Sughiyama","submitted_at":"2026-08-04T04:39:14Z","abstract_excerpt":"The performance of generative diffusion models is determined by the choice of the reference diffusion process connecting the empirical and prior distributions. Conventional approaches typically trade off simulation-free training against finite-time generation. We propose a framework for designing the reference process that achieves both simultaneously. The key idea is to prescribe tractable time-dependent conditional distributions and then construct the reference process realizing them as its marginals. This framework reveals that score matching is not fundamental to diffusion-model training b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.03117","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2608.03117/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":"2026-08-05T00:45:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JmiSMoTd0WEqrqd2bm9xr2rocomSSnbFBdeqpAaBltafdAEEKGAFTj6ah8Mm/MvfAZ5een3pY53F2kscIWE1Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T07:51:54.584344Z"},"content_sha256":"e1c839171d18fa208456e47e70bf81ef224277b5797596489f1b0344c4a6b802","schema_version":"1.0","event_id":"sha256:e1c839171d18fa208456e47e70bf81ef224277b5797596489f1b0344c4a6b802"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2V4GXZRPFYG7MC44FX3UCMX5J2/bundle.json","state_url":"https://pith.science/pith/2V4GXZRPFYG7MC44FX3UCMX5J2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2V4GXZRPFYG7MC44FX3UCMX5J2/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":"2026-08-23T07:51:54Z","links":{"resolver":"https://pith.science/pith/2V4GXZRPFYG7MC44FX3UCMX5J2","bundle":"https://pith.science/pith/2V4GXZRPFYG7MC44FX3UCMX5J2/bundle.json","state":"https://pith.science/pith/2V4GXZRPFYG7MC44FX3UCMX5J2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2V4GXZRPFYG7MC44FX3UCMX5J2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:2V4GXZRPFYG7MC44FX3UCMX5J2","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":"4eddb8e7c81d48020aa74899f09e406fd61a4e358ef09eb0d5fa8f20ab6f3e14","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-08-04T04:39:14Z","title_canon_sha256":"0cdf08a11b7c5309a98388688b484143d4bee554849c2778563a2c8e8a529532"},"schema_version":"1.0","source":{"id":"2608.03117","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.03117","created_at":"2026-08-05T00:45:43Z"},{"alias_kind":"arxiv_version","alias_value":"2608.03117v1","created_at":"2026-08-05T00:45:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.03117","created_at":"2026-08-05T00:45:43Z"},{"alias_kind":"pith_short_12","alias_value":"2V4GXZRPFYG7","created_at":"2026-08-05T00:45:43Z"},{"alias_kind":"pith_short_16","alias_value":"2V4GXZRPFYG7MC44","created_at":"2026-08-05T00:45:43Z"},{"alias_kind":"pith_short_8","alias_value":"2V4GXZRP","created_at":"2026-08-05T00:45:43Z"}],"graph_snapshots":[{"event_id":"sha256:e1c839171d18fa208456e47e70bf81ef224277b5797596489f1b0344c4a6b802","target":"graph","created_at":"2026-08-05T00:45:43Z","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/2608.03117/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The performance of generative diffusion models is determined by the choice of the reference diffusion process connecting the empirical and prior distributions. Conventional approaches typically trade off simulation-free training against finite-time generation. We propose a framework for designing the reference process that achieves both simultaneously. The key idea is to prescribe tractable time-dependent conditional distributions and then construct the reference process realizing them as its marginals. This framework reveals that score matching is not fundamental to diffusion-model training b","authors_text":"Kentaro Kaba, Masayuki Ohzeki, Yuki Sughiyama","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-08-04T04:39:14Z","title":"Simulation-free and finite-time diffusion model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.03117","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:cb6aa6d096df92b687e6a00986871c2f5134bf5834fab22bee5af7eb3c2bed2a","target":"record","created_at":"2026-08-05T00:45:43Z","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":"4eddb8e7c81d48020aa74899f09e406fd61a4e358ef09eb0d5fa8f20ab6f3e14","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-08-04T04:39:14Z","title_canon_sha256":"0cdf08a11b7c5309a98388688b484143d4bee554849c2778563a2c8e8a529532"},"schema_version":"1.0","source":{"id":"2608.03117","kind":"arxiv","version":1}},"canonical_sha256":"d5786be62f2e0df60b9c2df74132fd4ea4235112ad28f5a8b61ae1dbc5558d89","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5786be62f2e0df60b9c2df74132fd4ea4235112ad28f5a8b61ae1dbc5558d89","first_computed_at":"2026-08-05T00:45:43.401952Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-05T00:45:43.401952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gjNJfl8I7gNsTWRNpHSKDrkUQrDhqQgeNU8kEu++h84AuVmTJ3qWZHrJp7TbKc9L5XNRiOsSl1ax9q8khxxuBQ==","signature_status":"signed_v1","signed_at":"2026-08-05T00:45:43.404358Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.03117","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cb6aa6d096df92b687e6a00986871c2f5134bf5834fab22bee5af7eb3c2bed2a","sha256:e1c839171d18fa208456e47e70bf81ef224277b5797596489f1b0344c4a6b802"],"state_sha256":"b0bdda4b19ee3917e8c50ce339599a644e988797f77e72090ff640cc4185c435"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jfqEjyUbNlH71HU+XWMaoa1/MAZ9Xwwm7OvxX5Q/gYDha8Nx3djqTp8kKLNaUx+cUFDJVut4C/jaTDLsiooLBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T07:51:54.589018Z","bundle_sha256":"81ac1f706d1a13887e43c5fb3a3dcc52a6cf9cdc886e0a2fa781b6bcc8e9aa98"}}