{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:W6QV53YLQBSJYYGRGCBE2INHMJ","short_pith_number":"pith:W6QV53YL","canonical_record":{"source":{"id":"2607.03372","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-03T14:27:00Z","cross_cats_sorted":[],"title_canon_sha256":"61780301326fd6486f0b49aa5064b3531aa7945a0fd7cffb2d8aa14856ab4d7e","abstract_canon_sha256":"e9edc74e57a15f0562db7e27ee8e32d287d77be2e9059f57da63b09ab11f4cee"},"schema_version":"1.0"},"canonical_sha256":"b7a15eef0b80649c60d130824d21a7624de92e1a48fde0393369290f70792e8d","source":{"kind":"arxiv","id":"2607.03372","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.03372","created_at":"2026-07-07T02:17:40Z"},{"alias_kind":"arxiv_version","alias_value":"2607.03372v1","created_at":"2026-07-07T02:17:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.03372","created_at":"2026-07-07T02:17:40Z"},{"alias_kind":"pith_short_12","alias_value":"W6QV53YLQBSJ","created_at":"2026-07-07T02:17:40Z"},{"alias_kind":"pith_short_16","alias_value":"W6QV53YLQBSJYYGR","created_at":"2026-07-07T02:17:40Z"},{"alias_kind":"pith_short_8","alias_value":"W6QV53YL","created_at":"2026-07-07T02:17:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:W6QV53YLQBSJYYGRGCBE2INHMJ","target":"record","payload":{"canonical_record":{"source":{"id":"2607.03372","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-03T14:27:00Z","cross_cats_sorted":[],"title_canon_sha256":"61780301326fd6486f0b49aa5064b3531aa7945a0fd7cffb2d8aa14856ab4d7e","abstract_canon_sha256":"e9edc74e57a15f0562db7e27ee8e32d287d77be2e9059f57da63b09ab11f4cee"},"schema_version":"1.0"},"canonical_sha256":"b7a15eef0b80649c60d130824d21a7624de92e1a48fde0393369290f70792e8d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-07T02:17:40.061006Z","signature_b64":"SkR/zlcW4lVVxbG03tNfsUiqzdoznf5M0ldfuuQhPLPZhsl6gt42JJ9M9Uh/uZ53OGo9tC6oe1wXqJZV1wkvBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b7a15eef0b80649c60d130824d21a7624de92e1a48fde0393369290f70792e8d","last_reissued_at":"2026-07-07T02:17:40.060132Z","signature_status":"signed_v1","first_computed_at":"2026-07-07T02:17:40.060132Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.03372","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":"2026-07-07T02:17:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uxi3fZ5RG+DlTo9j4LX/FJhWbzEJAHB9QJnIopxMgXI6rb6fBFah+0ld1ko5FPct8JPnavLgau6w6pjALkUNAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T04:01:09.176172Z"},"content_sha256":"fd8c808411812884c1deb6ed4da0930803c8a09906a3b7472ef1468ad65c1be1","schema_version":"1.0","event_id":"sha256:fd8c808411812884c1deb6ed4da0930803c8a09906a3b7472ef1468ad65c1be1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:W6QV53YLQBSJYYGRGCBE2INHMJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Present but Not Remembered: Auditing How Frozen VLAs Encode, Deploy, and Steer Visual History","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Chih-Ting Liao, Xin Cao","submitted_at":"2026-07-03T14:27:00Z","abstract_excerpt":"A frozen vision-language-action model (VLA) receives recent observations at every decision step, yet prior work has focused on adding memory rather than asking how existing history is represented and used. We study this temporal axis using layer-resolved linear probing and causal interchange interventions across three VLAs from two architecture families. We find a three-part dissociation. First, past-frame content remains linearly decodable throughout the network. Second, information unique to history beyond the current frame is nearly absent, indicating that stored history is largely a redund"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.03372","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/2607.03372/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":"2026-07-07T02:17:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E1zvkqO0NlyNatypHubmQBeAKWNNIjHi/h7JOHuySp/sBOWl059rc7bKMkLS4CcpuyS39I2VcUgrpr853ROqAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T04:01:09.176844Z"},"content_sha256":"021b16b6c74d96acef1907565c4db6a163387159f71ca8093fe527d4921f2ab8","schema_version":"1.0","event_id":"sha256:021b16b6c74d96acef1907565c4db6a163387159f71ca8093fe527d4921f2ab8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W6QV53YLQBSJYYGRGCBE2INHMJ/bundle.json","state_url":"https://pith.science/pith/W6QV53YLQBSJYYGRGCBE2INHMJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W6QV53YLQBSJYYGRGCBE2INHMJ/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":"2026-08-12T04:01:09Z","links":{"resolver":"https://pith.science/pith/W6QV53YLQBSJYYGRGCBE2INHMJ","bundle":"https://pith.science/pith/W6QV53YLQBSJYYGRGCBE2INHMJ/bundle.json","state":"https://pith.science/pith/W6QV53YLQBSJYYGRGCBE2INHMJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W6QV53YLQBSJYYGRGCBE2INHMJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:W6QV53YLQBSJYYGRGCBE2INHMJ","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":"e9edc74e57a15f0562db7e27ee8e32d287d77be2e9059f57da63b09ab11f4cee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-03T14:27:00Z","title_canon_sha256":"61780301326fd6486f0b49aa5064b3531aa7945a0fd7cffb2d8aa14856ab4d7e"},"schema_version":"1.0","source":{"id":"2607.03372","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.03372","created_at":"2026-07-07T02:17:40Z"},{"alias_kind":"arxiv_version","alias_value":"2607.03372v1","created_at":"2026-07-07T02:17:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.03372","created_at":"2026-07-07T02:17:40Z"},{"alias_kind":"pith_short_12","alias_value":"W6QV53YLQBSJ","created_at":"2026-07-07T02:17:40Z"},{"alias_kind":"pith_short_16","alias_value":"W6QV53YLQBSJYYGR","created_at":"2026-07-07T02:17:40Z"},{"alias_kind":"pith_short_8","alias_value":"W6QV53YL","created_at":"2026-07-07T02:17:40Z"}],"graph_snapshots":[{"event_id":"sha256:021b16b6c74d96acef1907565c4db6a163387159f71ca8093fe527d4921f2ab8","target":"graph","created_at":"2026-07-07T02:17:40Z","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/2607.03372/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A frozen vision-language-action model (VLA) receives recent observations at every decision step, yet prior work has focused on adding memory rather than asking how existing history is represented and used. We study this temporal axis using layer-resolved linear probing and causal interchange interventions across three VLAs from two architecture families. We find a three-part dissociation. First, past-frame content remains linearly decodable throughout the network. Second, information unique to history beyond the current frame is nearly absent, indicating that stored history is largely a redund","authors_text":"Chih-Ting Liao, Xin Cao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-03T14:27:00Z","title":"Present but Not Remembered: Auditing How Frozen VLAs Encode, Deploy, and Steer Visual History"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.03372","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:fd8c808411812884c1deb6ed4da0930803c8a09906a3b7472ef1468ad65c1be1","target":"record","created_at":"2026-07-07T02:17:40Z","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":"e9edc74e57a15f0562db7e27ee8e32d287d77be2e9059f57da63b09ab11f4cee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-03T14:27:00Z","title_canon_sha256":"61780301326fd6486f0b49aa5064b3531aa7945a0fd7cffb2d8aa14856ab4d7e"},"schema_version":"1.0","source":{"id":"2607.03372","kind":"arxiv","version":1}},"canonical_sha256":"b7a15eef0b80649c60d130824d21a7624de92e1a48fde0393369290f70792e8d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b7a15eef0b80649c60d130824d21a7624de92e1a48fde0393369290f70792e8d","first_computed_at":"2026-07-07T02:17:40.060132Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-07T02:17:40.060132Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SkR/zlcW4lVVxbG03tNfsUiqzdoznf5M0ldfuuQhPLPZhsl6gt42JJ9M9Uh/uZ53OGo9tC6oe1wXqJZV1wkvBw==","signature_status":"signed_v1","signed_at":"2026-07-07T02:17:40.061006Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.03372","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fd8c808411812884c1deb6ed4da0930803c8a09906a3b7472ef1468ad65c1be1","sha256:021b16b6c74d96acef1907565c4db6a163387159f71ca8093fe527d4921f2ab8"],"state_sha256":"1d4bf7f8dd63deaac2c890925be725d43ba38324e7ba28597265c061aae1da6c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D9ApkAUyODgFzZB+IOSsSqT5fJP2vkl9FA18nr/79R4u022mrw+y8BJkw73V/NfgskNsMEb2gwRG6gqfBOWYBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T04:01:09.191326Z","bundle_sha256":"602352e31b213087b203ae56a083b7b68fd2e549e67fb1a37e6dc073c944531c"}}