{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:DGDZVS3I3SSXHP7E7QCYJRBXGY","short_pith_number":"pith:DGDZVS3I","canonical_record":{"source":{"id":"2606.18874","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-06-17T09:52:14Z","cross_cats_sorted":[],"title_canon_sha256":"4475e4a99fe7fef19d186179a81a18100f0d39bb4f669c09acf707626a9fc053","abstract_canon_sha256":"33af4ffadd6c0ab883c855eac9d3a78051b29cb09f13de60e6d8c9bf20ce7635"},"schema_version":"1.0"},"canonical_sha256":"19879acb68dca573bfe4fc0584c437362c32a869a9c641153324e885b2794b8c","source":{"kind":"arxiv","id":"2606.18874","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.18874","created_at":"2026-06-19T16:11:50Z"},{"alias_kind":"arxiv_version","alias_value":"2606.18874v1","created_at":"2026-06-19T16:11:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.18874","created_at":"2026-06-19T16:11:50Z"},{"alias_kind":"pith_short_12","alias_value":"DGDZVS3I3SSX","created_at":"2026-06-19T16:11:50Z"},{"alias_kind":"pith_short_16","alias_value":"DGDZVS3I3SSXHP7E","created_at":"2026-06-19T16:11:50Z"},{"alias_kind":"pith_short_8","alias_value":"DGDZVS3I","created_at":"2026-06-19T16:11:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:DGDZVS3I3SSXHP7E7QCYJRBXGY","target":"record","payload":{"canonical_record":{"source":{"id":"2606.18874","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-06-17T09:52:14Z","cross_cats_sorted":[],"title_canon_sha256":"4475e4a99fe7fef19d186179a81a18100f0d39bb4f669c09acf707626a9fc053","abstract_canon_sha256":"33af4ffadd6c0ab883c855eac9d3a78051b29cb09f13de60e6d8c9bf20ce7635"},"schema_version":"1.0"},"canonical_sha256":"19879acb68dca573bfe4fc0584c437362c32a869a9c641153324e885b2794b8c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:11:50.623362Z","signature_b64":"HRHyjGwdk5DoFuaGnV6phvzXd4noYSVjtOyH8DPs3Pdv7hTavPeKk1HRTTMUcxKxBWD8Nlh+PEp56I69kniHDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"19879acb68dca573bfe4fc0584c437362c32a869a9c641153324e885b2794b8c","last_reissued_at":"2026-06-19T16:11:50.622941Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:11:50.622941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.18874","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":"2026-06-19T16:11:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d/jnQzy0VhTFQKJnPRC8eT0duyqw/2+qqUe4RXnsVt6KzGihh5r3OFFm6iXHwY012SNKpvkVR0fqnhZRrXRKCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T03:26:13.151980Z"},"content_sha256":"4098ff190a74bb0ed319b0e118468923101133715472ca0f1767adb27bfcc067","schema_version":"1.0","event_id":"sha256:4098ff190a74bb0ed319b0e118468923101133715472ca0f1767adb27bfcc067"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:DGDZVS3I3SSXHP7E7QCYJRBXGY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Externalizing Research Synthesis and Validation in AI Scientists through a Research Harness","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.AI","authors_text":"Chenrun Wang, Da Ma, Danyu Luo, Hanqi Li, Huayang Wang, Jing Peng, Kai Yu, Lu Chen, Senyu Han, Shenghan Zuo, Sijia Guo, Tiancheng Huang, Yilu Cao, Yunzhe Zhang, Zichen Zhu, Zijian Hu, Zijian Wang, Ziyue Yang","submitted_at":"2026-06-17T09:52:14Z","abstract_excerpt":"AI systems can increasingly automate scientific workflows, but the reasoning that links prior evidence, generated ideas, experiments and final claims often remains implicit inside model inference. Here we introduce Xcientist, a research harness that externalizes research synthesis and experimental validation into inspectable, contract-governed processes. Xcientist organizes literature evidence, idea states, implementation plans, ablation records and repair traces as persistent research artifacts, so that generated mechanisms can be grounded, executed, tested and revised without losing their ev"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.18874","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/2606.18874/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":"2026-06-19T16:11:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nUkkC910G8mdiX2Acjg7xdj5aPWEfgYbR7xY+n3vq1vnVrXhjOB+iHCxt0Df9tIGGXD2c1+z4PyN+nwdfwwxAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T03:26:13.152361Z"},"content_sha256":"6d5f1224625d470790bf104dc4fbf294d4f5215c3c10a00f83f8d0de22b43e83","schema_version":"1.0","event_id":"sha256:6d5f1224625d470790bf104dc4fbf294d4f5215c3c10a00f83f8d0de22b43e83"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DGDZVS3I3SSXHP7E7QCYJRBXGY/bundle.json","state_url":"https://pith.science/pith/DGDZVS3I3SSXHP7E7QCYJRBXGY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DGDZVS3I3SSXHP7E7QCYJRBXGY/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":"2026-06-28T03:26:13Z","links":{"resolver":"https://pith.science/pith/DGDZVS3I3SSXHP7E7QCYJRBXGY","bundle":"https://pith.science/pith/DGDZVS3I3SSXHP7E7QCYJRBXGY/bundle.json","state":"https://pith.science/pith/DGDZVS3I3SSXHP7E7QCYJRBXGY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DGDZVS3I3SSXHP7E7QCYJRBXGY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:DGDZVS3I3SSXHP7E7QCYJRBXGY","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":"33af4ffadd6c0ab883c855eac9d3a78051b29cb09f13de60e6d8c9bf20ce7635","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-06-17T09:52:14Z","title_canon_sha256":"4475e4a99fe7fef19d186179a81a18100f0d39bb4f669c09acf707626a9fc053"},"schema_version":"1.0","source":{"id":"2606.18874","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.18874","created_at":"2026-06-19T16:11:50Z"},{"alias_kind":"arxiv_version","alias_value":"2606.18874v1","created_at":"2026-06-19T16:11:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.18874","created_at":"2026-06-19T16:11:50Z"},{"alias_kind":"pith_short_12","alias_value":"DGDZVS3I3SSX","created_at":"2026-06-19T16:11:50Z"},{"alias_kind":"pith_short_16","alias_value":"DGDZVS3I3SSXHP7E","created_at":"2026-06-19T16:11:50Z"},{"alias_kind":"pith_short_8","alias_value":"DGDZVS3I","created_at":"2026-06-19T16:11:50Z"}],"graph_snapshots":[{"event_id":"sha256:6d5f1224625d470790bf104dc4fbf294d4f5215c3c10a00f83f8d0de22b43e83","target":"graph","created_at":"2026-06-19T16:11:50Z","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/2606.18874/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"AI systems can increasingly automate scientific workflows, but the reasoning that links prior evidence, generated ideas, experiments and final claims often remains implicit inside model inference. Here we introduce Xcientist, a research harness that externalizes research synthesis and experimental validation into inspectable, contract-governed processes. Xcientist organizes literature evidence, idea states, implementation plans, ablation records and repair traces as persistent research artifacts, so that generated mechanisms can be grounded, executed, tested and revised without losing their ev","authors_text":"Chenrun Wang, Da Ma, Danyu Luo, Hanqi Li, Huayang Wang, Jing Peng, Kai Yu, Lu Chen, Senyu Han, Shenghan Zuo, Sijia Guo, Tiancheng Huang, Yilu Cao, Yunzhe Zhang, Zichen Zhu, Zijian Hu, Zijian Wang, Ziyue Yang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-06-17T09:52:14Z","title":"Externalizing Research Synthesis and Validation in AI Scientists through a Research Harness"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.18874","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":"sha256:4098ff190a74bb0ed319b0e118468923101133715472ca0f1767adb27bfcc067","target":"record","created_at":"2026-06-19T16:11:50Z","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":"33af4ffadd6c0ab883c855eac9d3a78051b29cb09f13de60e6d8c9bf20ce7635","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-06-17T09:52:14Z","title_canon_sha256":"4475e4a99fe7fef19d186179a81a18100f0d39bb4f669c09acf707626a9fc053"},"schema_version":"1.0","source":{"id":"2606.18874","kind":"arxiv","version":1}},"canonical_sha256":"19879acb68dca573bfe4fc0584c437362c32a869a9c641153324e885b2794b8c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"19879acb68dca573bfe4fc0584c437362c32a869a9c641153324e885b2794b8c","first_computed_at":"2026-06-19T16:11:50.622941Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:11:50.622941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HRHyjGwdk5DoFuaGnV6phvzXd4noYSVjtOyH8DPs3Pdv7hTavPeKk1HRTTMUcxKxBWD8Nlh+PEp56I69kniHDw==","signature_status":"signed_v1","signed_at":"2026-06-19T16:11:50.623362Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.18874","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4098ff190a74bb0ed319b0e118468923101133715472ca0f1767adb27bfcc067","sha256:6d5f1224625d470790bf104dc4fbf294d4f5215c3c10a00f83f8d0de22b43e83"],"state_sha256":"c67b409b897ed0fa004449bed70831e27809b22c3d48a2cbcb4ab243de582abd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P8g0zzDLyeLuswxUy542fTC6HIjhkoPusThS6Qgy0s9h+waUy1qO5pghkljVARqzuyzAXgA+g02WLCOJSO8wBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T03:26:13.154306Z","bundle_sha256":"7bce55c79f53508adaaa520aaa807bc598756f32ae625d7ab2e011e20b0c04d2"}}