{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:PNFWELCTGREPZZFBA2DPUREMQP","short_pith_number":"pith:PNFWELCT","canonical_record":{"source":{"id":"2607.03358","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-03T14:15:08Z","cross_cats_sorted":["cs.CL","cs.LG"],"title_canon_sha256":"6cfb6de68301918a04ab3ee38e56a96825a5839b62241a25a04212fa6ee9a3bc","abstract_canon_sha256":"ea2b32a4f8a77ece857f8beff726b87f4f3f7aaee922a1e282861ce8ad2648d7"},"schema_version":"1.0"},"canonical_sha256":"7b4b622c533448fce4a10686fa448c83f039f612318e70a1b60bc457b7a9fe54","source":{"kind":"arxiv","id":"2607.03358","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.03358","created_at":"2026-07-07T02:17:39Z"},{"alias_kind":"arxiv_version","alias_value":"2607.03358v1","created_at":"2026-07-07T02:17:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.03358","created_at":"2026-07-07T02:17:39Z"},{"alias_kind":"pith_short_12","alias_value":"PNFWELCTGREP","created_at":"2026-07-07T02:17:39Z"},{"alias_kind":"pith_short_16","alias_value":"PNFWELCTGREPZZFB","created_at":"2026-07-07T02:17:39Z"},{"alias_kind":"pith_short_8","alias_value":"PNFWELCT","created_at":"2026-07-07T02:17:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:PNFWELCTGREPZZFBA2DPUREMQP","target":"record","payload":{"canonical_record":{"source":{"id":"2607.03358","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-03T14:15:08Z","cross_cats_sorted":["cs.CL","cs.LG"],"title_canon_sha256":"6cfb6de68301918a04ab3ee38e56a96825a5839b62241a25a04212fa6ee9a3bc","abstract_canon_sha256":"ea2b32a4f8a77ece857f8beff726b87f4f3f7aaee922a1e282861ce8ad2648d7"},"schema_version":"1.0"},"canonical_sha256":"7b4b622c533448fce4a10686fa448c83f039f612318e70a1b60bc457b7a9fe54","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-07T02:17:39.053501Z","signature_b64":"PCFzjKKYC/SCAqssBzeDLLXd0DZYJL2xJhb2Jtoqjuseal9eRfGcLy6tgKbauxulzZM9LrkFztn/qmTTrrHHDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7b4b622c533448fce4a10686fa448c83f039f612318e70a1b60bc457b7a9fe54","last_reissued_at":"2026-07-07T02:17:39.052812Z","signature_status":"signed_v1","first_computed_at":"2026-07-07T02:17:39.052812Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.03358","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":"2026-07-07T02:17:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mMpkafGyAi3YqcelXDYq5BAtNcyRot4CqS14U0ac1RWI9i3qOoFbH+nOHvRUKmkQIiu8eVQJZ6+T/WLUWzwDCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T03:47:49.954128Z"},"content_sha256":"56375a218d098525c3c530882db86c27136e3846d9c4d9b7ade0df2a9f9df142","schema_version":"1.0","event_id":"sha256:56375a218d098525c3c530882db86c27136e3846d9c4d9b7ade0df2a9f9df142"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:PNFWELCTGREPZZFBA2DPUREMQP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pathways of Visual Information Flow in Vision-Language Models","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CL","cs.LG"],"primary_cat":"cs.CV","authors_text":"Constanza Fierro, Dan Oneata, Desmond Elliott, Israfel Salazar, Stella Frank","submitted_at":"2026-07-03T14:15:08Z","abstract_excerpt":"We study how visual information is routed in vision-language models (VLMs). Using causal patching on controlled synthetic and natural datasets, we find that models rely on two distinct pathways to solve visual tasks: A direct pathway, where visual information is retained in image token representations and read out by the final token at later layers, and a text-mediated pathway, where visual information is first transferred to the query tokens and then read out by the final token. Across three visual tasks, we show that pathway selection is task-dependent, and that data distribution and prompt "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.03358","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/2607.03358/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":"2026-07-07T02:17:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uhm+j0rgqBM0L1Kms/LRR9XRlbfvX8iPuqIxYC+soHpE4JCTIj3MHQBEu519KcoZP8zVxsctZ//kcKWf4pySAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T03:47:49.955040Z"},"content_sha256":"fd5d32989afbd747f1a54962a9e0217233a8a4a8feffbe4e12b914f30a95b286","schema_version":"1.0","event_id":"sha256:fd5d32989afbd747f1a54962a9e0217233a8a4a8feffbe4e12b914f30a95b286"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PNFWELCTGREPZZFBA2DPUREMQP/bundle.json","state_url":"https://pith.science/pith/PNFWELCTGREPZZFBA2DPUREMQP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PNFWELCTGREPZZFBA2DPUREMQP/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":"2026-08-05T03:47:49Z","links":{"resolver":"https://pith.science/pith/PNFWELCTGREPZZFBA2DPUREMQP","bundle":"https://pith.science/pith/PNFWELCTGREPZZFBA2DPUREMQP/bundle.json","state":"https://pith.science/pith/PNFWELCTGREPZZFBA2DPUREMQP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PNFWELCTGREPZZFBA2DPUREMQP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:PNFWELCTGREPZZFBA2DPUREMQP","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":"ea2b32a4f8a77ece857f8beff726b87f4f3f7aaee922a1e282861ce8ad2648d7","cross_cats_sorted":["cs.CL","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-03T14:15:08Z","title_canon_sha256":"6cfb6de68301918a04ab3ee38e56a96825a5839b62241a25a04212fa6ee9a3bc"},"schema_version":"1.0","source":{"id":"2607.03358","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.03358","created_at":"2026-07-07T02:17:39Z"},{"alias_kind":"arxiv_version","alias_value":"2607.03358v1","created_at":"2026-07-07T02:17:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.03358","created_at":"2026-07-07T02:17:39Z"},{"alias_kind":"pith_short_12","alias_value":"PNFWELCTGREP","created_at":"2026-07-07T02:17:39Z"},{"alias_kind":"pith_short_16","alias_value":"PNFWELCTGREPZZFB","created_at":"2026-07-07T02:17:39Z"},{"alias_kind":"pith_short_8","alias_value":"PNFWELCT","created_at":"2026-07-07T02:17:39Z"}],"graph_snapshots":[{"event_id":"sha256:fd5d32989afbd747f1a54962a9e0217233a8a4a8feffbe4e12b914f30a95b286","target":"graph","created_at":"2026-07-07T02:17:39Z","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/2607.03358/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study how visual information is routed in vision-language models (VLMs). Using causal patching on controlled synthetic and natural datasets, we find that models rely on two distinct pathways to solve visual tasks: A direct pathway, where visual information is retained in image token representations and read out by the final token at later layers, and a text-mediated pathway, where visual information is first transferred to the query tokens and then read out by the final token. Across three visual tasks, we show that pathway selection is task-dependent, and that data distribution and prompt ","authors_text":"Constanza Fierro, Dan Oneata, Desmond Elliott, Israfel Salazar, Stella Frank","cross_cats":["cs.CL","cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-03T14:15:08Z","title":"Pathways of Visual Information Flow in Vision-Language Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.03358","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":"sha256:56375a218d098525c3c530882db86c27136e3846d9c4d9b7ade0df2a9f9df142","target":"record","created_at":"2026-07-07T02:17:39Z","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":"ea2b32a4f8a77ece857f8beff726b87f4f3f7aaee922a1e282861ce8ad2648d7","cross_cats_sorted":["cs.CL","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-03T14:15:08Z","title_canon_sha256":"6cfb6de68301918a04ab3ee38e56a96825a5839b62241a25a04212fa6ee9a3bc"},"schema_version":"1.0","source":{"id":"2607.03358","kind":"arxiv","version":1}},"canonical_sha256":"7b4b622c533448fce4a10686fa448c83f039f612318e70a1b60bc457b7a9fe54","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b4b622c533448fce4a10686fa448c83f039f612318e70a1b60bc457b7a9fe54","first_computed_at":"2026-07-07T02:17:39.052812Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-07T02:17:39.052812Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PCFzjKKYC/SCAqssBzeDLLXd0DZYJL2xJhb2Jtoqjuseal9eRfGcLy6tgKbauxulzZM9LrkFztn/qmTTrrHHDg==","signature_status":"signed_v1","signed_at":"2026-07-07T02:17:39.053501Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.03358","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56375a218d098525c3c530882db86c27136e3846d9c4d9b7ade0df2a9f9df142","sha256:fd5d32989afbd747f1a54962a9e0217233a8a4a8feffbe4e12b914f30a95b286"],"state_sha256":"bd8e1e604a9bcb993fb246e34ca511ba59097d1e1fe1994feca02f386983a7ff"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"unGL0qGXIXNCvazhBrbFwCPpCihJNKuGutunQAjNmy9yA7BxQBLMgHA5dCda3k10iFDzv2+x6JXgXw7YuMl7AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T03:47:49.958608Z","bundle_sha256":"a424b6cd5263779a8b073970b17dac5db3ca0b226e8945ff4d60c7131a1f63d0"}}