{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:QXF7ZBT2MLQ3YOIGC7V4X2M3ZF","short_pith_number":"pith:QXF7ZBT2","canonical_record":{"source":{"id":"2606.19618","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GT","submitted_at":"2026-06-17T21:52:51Z","cross_cats_sorted":[],"title_canon_sha256":"e6a7a913c86f07b13018fdcb7ecd327a2818decc3c434a15be3bd281cedffb51","abstract_canon_sha256":"2ca7bc04a026e907240633c05eefa909b69791dd0e694f8f44fba00b9944637d"},"schema_version":"1.0"},"canonical_sha256":"85cbfc867a62e1bc390617ebcbe99bc960d486836a6ab3f565af288a3308a5dd","source":{"kind":"arxiv","id":"2606.19618","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.19618","created_at":"2026-06-19T16:12:30Z"},{"alias_kind":"arxiv_version","alias_value":"2606.19618v1","created_at":"2026-06-19T16:12:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.19618","created_at":"2026-06-19T16:12:30Z"},{"alias_kind":"pith_short_12","alias_value":"QXF7ZBT2MLQ3","created_at":"2026-06-19T16:12:30Z"},{"alias_kind":"pith_short_16","alias_value":"QXF7ZBT2MLQ3YOIG","created_at":"2026-06-19T16:12:30Z"},{"alias_kind":"pith_short_8","alias_value":"QXF7ZBT2","created_at":"2026-06-19T16:12:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:QXF7ZBT2MLQ3YOIGC7V4X2M3ZF","target":"record","payload":{"canonical_record":{"source":{"id":"2606.19618","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GT","submitted_at":"2026-06-17T21:52:51Z","cross_cats_sorted":[],"title_canon_sha256":"e6a7a913c86f07b13018fdcb7ecd327a2818decc3c434a15be3bd281cedffb51","abstract_canon_sha256":"2ca7bc04a026e907240633c05eefa909b69791dd0e694f8f44fba00b9944637d"},"schema_version":"1.0"},"canonical_sha256":"85cbfc867a62e1bc390617ebcbe99bc960d486836a6ab3f565af288a3308a5dd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:12:30.312253Z","signature_b64":"juZWGCkNNvXHnla+cgD8LVWp17Zt3xnFzIcsgbKzCd4B2B41qZpV1hNXs/hUw77FCCb7MAA7F4I3Rsfrl5Y/DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85cbfc867a62e1bc390617ebcbe99bc960d486836a6ab3f565af288a3308a5dd","last_reissued_at":"2026-06-19T16:12:30.311905Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:12:30.311905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.19618","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":"2026-06-19T16:12:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jWeMeljC/JaZYzZJWQZ1HO9LJQE4Z7S+QNF8RHisHh/+btPleZ8Uh5R03dsSwahsHARg13OlvGtgem5HeLt8Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T23:02:44.961109Z"},"content_sha256":"7bf7721be0fbfaac124e026d1dbd5a8dee68043ef862ab5a4984db060a643ffa","schema_version":"1.0","event_id":"sha256:7bf7721be0fbfaac124e026d1dbd5a8dee68043ef862ab5a4984db060a643ffa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:QXF7ZBT2MLQ3YOIGC7V4X2M3ZF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Joint-task truthfulness of the DMI mechanism","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.GT","authors_text":"Rafael Frongillo","submitted_at":"2026-06-17T21:52:51Z","abstract_excerpt":"The Determinant Mutual Information (DMI) mechanism of Kong (2020, 2024) is dominantly truthful within the class of *consistent* reporting strategies, those that apply the same single-task strategy to every task. In settings where agents see multiple tasks before reporting, such as peer grading or peer review, it is natural to consider *joint-task* strategies that may condition reports on the full signal vector. Perhaps surprisingly, we show that the DMI mechanism preserves truthful reporting as a best response among all joint-task strategies when other agents play consistent strategies, so tha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.19618","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/2606.19618/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":"2026-06-19T16:12:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"arXia7XFSlU89ojnv90ciM6970/OSHw10bqrqnXz2qGEFhcSEQv2nXnt3l0Qtz6UQ3qLAtxG99OgQJsECByhBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T23:02:44.961489Z"},"content_sha256":"5d78ef456f17ea2e9b18b90e64f88fd56dbfd8a67921879c2abab7e03843cf17","schema_version":"1.0","event_id":"sha256:5d78ef456f17ea2e9b18b90e64f88fd56dbfd8a67921879c2abab7e03843cf17"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QXF7ZBT2MLQ3YOIGC7V4X2M3ZF/bundle.json","state_url":"https://pith.science/pith/QXF7ZBT2MLQ3YOIGC7V4X2M3ZF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QXF7ZBT2MLQ3YOIGC7V4X2M3ZF/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":"2026-06-19T23:02:44Z","links":{"resolver":"https://pith.science/pith/QXF7ZBT2MLQ3YOIGC7V4X2M3ZF","bundle":"https://pith.science/pith/QXF7ZBT2MLQ3YOIGC7V4X2M3ZF/bundle.json","state":"https://pith.science/pith/QXF7ZBT2MLQ3YOIGC7V4X2M3ZF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QXF7ZBT2MLQ3YOIGC7V4X2M3ZF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:QXF7ZBT2MLQ3YOIGC7V4X2M3ZF","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":"2ca7bc04a026e907240633c05eefa909b69791dd0e694f8f44fba00b9944637d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GT","submitted_at":"2026-06-17T21:52:51Z","title_canon_sha256":"e6a7a913c86f07b13018fdcb7ecd327a2818decc3c434a15be3bd281cedffb51"},"schema_version":"1.0","source":{"id":"2606.19618","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.19618","created_at":"2026-06-19T16:12:30Z"},{"alias_kind":"arxiv_version","alias_value":"2606.19618v1","created_at":"2026-06-19T16:12:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.19618","created_at":"2026-06-19T16:12:30Z"},{"alias_kind":"pith_short_12","alias_value":"QXF7ZBT2MLQ3","created_at":"2026-06-19T16:12:30Z"},{"alias_kind":"pith_short_16","alias_value":"QXF7ZBT2MLQ3YOIG","created_at":"2026-06-19T16:12:30Z"},{"alias_kind":"pith_short_8","alias_value":"QXF7ZBT2","created_at":"2026-06-19T16:12:30Z"}],"graph_snapshots":[{"event_id":"sha256:5d78ef456f17ea2e9b18b90e64f88fd56dbfd8a67921879c2abab7e03843cf17","target":"graph","created_at":"2026-06-19T16:12:30Z","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/2606.19618/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Determinant Mutual Information (DMI) mechanism of Kong (2020, 2024) is dominantly truthful within the class of *consistent* reporting strategies, those that apply the same single-task strategy to every task. In settings where agents see multiple tasks before reporting, such as peer grading or peer review, it is natural to consider *joint-task* strategies that may condition reports on the full signal vector. Perhaps surprisingly, we show that the DMI mechanism preserves truthful reporting as a best response among all joint-task strategies when other agents play consistent strategies, so tha","authors_text":"Rafael Frongillo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GT","submitted_at":"2026-06-17T21:52:51Z","title":"Joint-task truthfulness of the DMI mechanism"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.19618","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":"sha256:7bf7721be0fbfaac124e026d1dbd5a8dee68043ef862ab5a4984db060a643ffa","target":"record","created_at":"2026-06-19T16:12:30Z","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":"2ca7bc04a026e907240633c05eefa909b69791dd0e694f8f44fba00b9944637d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GT","submitted_at":"2026-06-17T21:52:51Z","title_canon_sha256":"e6a7a913c86f07b13018fdcb7ecd327a2818decc3c434a15be3bd281cedffb51"},"schema_version":"1.0","source":{"id":"2606.19618","kind":"arxiv","version":1}},"canonical_sha256":"85cbfc867a62e1bc390617ebcbe99bc960d486836a6ab3f565af288a3308a5dd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85cbfc867a62e1bc390617ebcbe99bc960d486836a6ab3f565af288a3308a5dd","first_computed_at":"2026-06-19T16:12:30.311905Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:12:30.311905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"juZWGCkNNvXHnla+cgD8LVWp17Zt3xnFzIcsgbKzCd4B2B41qZpV1hNXs/hUw77FCCb7MAA7F4I3Rsfrl5Y/DA==","signature_status":"signed_v1","signed_at":"2026-06-19T16:12:30.312253Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.19618","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7bf7721be0fbfaac124e026d1dbd5a8dee68043ef862ab5a4984db060a643ffa","sha256:5d78ef456f17ea2e9b18b90e64f88fd56dbfd8a67921879c2abab7e03843cf17"],"state_sha256":"47b79c8742e4f8d04a4d6ebc5fc2d913c32bca48f76f11a3f1971fc0bebaf27e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xm76Z5FnOZKOZ/c88XuLZAGHvBUenPta4re8iDbwchBE06heBWJ1anCOYGb4pqIrFTxi/zaawcSrOIQK8HohDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-19T23:02:44.963331Z","bundle_sha256":"5222d71ddabee67fbf68f99a2446b8f693896fb26912770289acdf6349b87da3"}}