{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:VWIC6CW5QUKR6H2WJZCF3JX6HQ","short_pith_number":"pith:VWIC6CW5","canonical_record":{"source":{"id":"2607.01851","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-02T08:11:32Z","cross_cats_sorted":[],"title_canon_sha256":"b26434cfc81c4fbe653e9b46e2364dc35ced591a3ff434a51f106a6553066e50","abstract_canon_sha256":"d2c651699413a3e8424eea3323283eaa020e08707b56ceb15b8490b355b7ea37"},"schema_version":"1.0"},"canonical_sha256":"ad902f0add85151f1f564e445da6fe3c14b0152e12e49129d39bece1306d3fc5","source":{"kind":"arxiv","id":"2607.01851","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.01851","created_at":"2026-07-03T01:17:31Z"},{"alias_kind":"arxiv_version","alias_value":"2607.01851v1","created_at":"2026-07-03T01:17:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.01851","created_at":"2026-07-03T01:17:31Z"},{"alias_kind":"pith_short_12","alias_value":"VWIC6CW5QUKR","created_at":"2026-07-03T01:17:31Z"},{"alias_kind":"pith_short_16","alias_value":"VWIC6CW5QUKR6H2W","created_at":"2026-07-03T01:17:31Z"},{"alias_kind":"pith_short_8","alias_value":"VWIC6CW5","created_at":"2026-07-03T01:17:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:VWIC6CW5QUKR6H2WJZCF3JX6HQ","target":"record","payload":{"canonical_record":{"source":{"id":"2607.01851","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-02T08:11:32Z","cross_cats_sorted":[],"title_canon_sha256":"b26434cfc81c4fbe653e9b46e2364dc35ced591a3ff434a51f106a6553066e50","abstract_canon_sha256":"d2c651699413a3e8424eea3323283eaa020e08707b56ceb15b8490b355b7ea37"},"schema_version":"1.0"},"canonical_sha256":"ad902f0add85151f1f564e445da6fe3c14b0152e12e49129d39bece1306d3fc5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-03T01:17:31.657170Z","signature_b64":"E20+ppRyW/OUQZ2KhndfzCushFmczgHOSozN0N7OzenDEXl7EVB/wDw5djegum6+KWhrNJzHDbz7f8WlZVVsDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad902f0add85151f1f564e445da6fe3c14b0152e12e49129d39bece1306d3fc5","last_reissued_at":"2026-07-03T01:17:31.656817Z","signature_status":"signed_v1","first_computed_at":"2026-07-03T01:17:31.656817Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.01851","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":"2026-07-03T01:17:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4fcQfifn9DWLNCdZPbOE1wc+l7PRGDOqYd2oURAUvejSP5JaotvD3MqSxgfsGKXKu30hcGr+WNr0XR0agjcVDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T12:23:18.355914Z"},"content_sha256":"36911e4ce32e12a54e7821f6ccf7070bec7121a4487f4cc4a60b398cd2cd7f0a","schema_version":"1.0","event_id":"sha256:36911e4ce32e12a54e7821f6ccf7070bec7121a4487f4cc4a60b398cd2cd7f0a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:VWIC6CW5QUKR6H2WJZCF3JX6HQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Geometric Foundation Model Distillation for Efficient Lunar 3D Reconstruction","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Cl\\'ementine Grethen, Florient Chouteau, G\\'eraldine Morin, Simone Gasparini","submitted_at":"2026-07-02T08:11:32Z","abstract_excerpt":"Large 3D foundation models such as MASt3R achieve state-of-the-art stereo reconstruction but are computationally demanding for deployment under strict hardware constraints -- a critical limitation in domains such as planetary exploration, where onboard computing is severely restricted. We study how far such models can be compressed through knowledge distillation, using lunar stereo reconstruction as a challenging and practically relevant case study. Starting from a 688M-parameter MASt3R teacher fine-tuned on lunar imagery, we distill its dense geometric predictions into a family of lightweight"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.01851","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/2607.01851/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":"2026-07-03T01:17:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0snaeRH9fBXOV2e+fm2/eh3qyw2kMRthAJiGqaXOPKXw6B00bZX/OtGMIRhhXSpr2fEry738lQPvKrci8iHVBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T12:23:18.356294Z"},"content_sha256":"2aab2684bed7c1453b61f85d9b6efa684c918f94c6bd0ecf1e3d3201eb5dbbca","schema_version":"1.0","event_id":"sha256:2aab2684bed7c1453b61f85d9b6efa684c918f94c6bd0ecf1e3d3201eb5dbbca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VWIC6CW5QUKR6H2WJZCF3JX6HQ/bundle.json","state_url":"https://pith.science/pith/VWIC6CW5QUKR6H2WJZCF3JX6HQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VWIC6CW5QUKR6H2WJZCF3JX6HQ/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":"2026-07-04T12:23:18Z","links":{"resolver":"https://pith.science/pith/VWIC6CW5QUKR6H2WJZCF3JX6HQ","bundle":"https://pith.science/pith/VWIC6CW5QUKR6H2WJZCF3JX6HQ/bundle.json","state":"https://pith.science/pith/VWIC6CW5QUKR6H2WJZCF3JX6HQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VWIC6CW5QUKR6H2WJZCF3JX6HQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:VWIC6CW5QUKR6H2WJZCF3JX6HQ","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":"d2c651699413a3e8424eea3323283eaa020e08707b56ceb15b8490b355b7ea37","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-02T08:11:32Z","title_canon_sha256":"b26434cfc81c4fbe653e9b46e2364dc35ced591a3ff434a51f106a6553066e50"},"schema_version":"1.0","source":{"id":"2607.01851","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.01851","created_at":"2026-07-03T01:17:31Z"},{"alias_kind":"arxiv_version","alias_value":"2607.01851v1","created_at":"2026-07-03T01:17:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.01851","created_at":"2026-07-03T01:17:31Z"},{"alias_kind":"pith_short_12","alias_value":"VWIC6CW5QUKR","created_at":"2026-07-03T01:17:31Z"},{"alias_kind":"pith_short_16","alias_value":"VWIC6CW5QUKR6H2W","created_at":"2026-07-03T01:17:31Z"},{"alias_kind":"pith_short_8","alias_value":"VWIC6CW5","created_at":"2026-07-03T01:17:31Z"}],"graph_snapshots":[{"event_id":"sha256:2aab2684bed7c1453b61f85d9b6efa684c918f94c6bd0ecf1e3d3201eb5dbbca","target":"graph","created_at":"2026-07-03T01:17:31Z","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/2607.01851/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Large 3D foundation models such as MASt3R achieve state-of-the-art stereo reconstruction but are computationally demanding for deployment under strict hardware constraints -- a critical limitation in domains such as planetary exploration, where onboard computing is severely restricted. We study how far such models can be compressed through knowledge distillation, using lunar stereo reconstruction as a challenging and practically relevant case study. Starting from a 688M-parameter MASt3R teacher fine-tuned on lunar imagery, we distill its dense geometric predictions into a family of lightweight","authors_text":"Cl\\'ementine Grethen, Florient Chouteau, G\\'eraldine Morin, Simone Gasparini","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-02T08:11:32Z","title":"Geometric Foundation Model Distillation for Efficient Lunar 3D Reconstruction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.01851","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":"sha256:36911e4ce32e12a54e7821f6ccf7070bec7121a4487f4cc4a60b398cd2cd7f0a","target":"record","created_at":"2026-07-03T01:17:31Z","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":"d2c651699413a3e8424eea3323283eaa020e08707b56ceb15b8490b355b7ea37","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-02T08:11:32Z","title_canon_sha256":"b26434cfc81c4fbe653e9b46e2364dc35ced591a3ff434a51f106a6553066e50"},"schema_version":"1.0","source":{"id":"2607.01851","kind":"arxiv","version":1}},"canonical_sha256":"ad902f0add85151f1f564e445da6fe3c14b0152e12e49129d39bece1306d3fc5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ad902f0add85151f1f564e445da6fe3c14b0152e12e49129d39bece1306d3fc5","first_computed_at":"2026-07-03T01:17:31.656817Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-03T01:17:31.656817Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E20+ppRyW/OUQZ2KhndfzCushFmczgHOSozN0N7OzenDEXl7EVB/wDw5djegum6+KWhrNJzHDbz7f8WlZVVsDg==","signature_status":"signed_v1","signed_at":"2026-07-03T01:17:31.657170Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.01851","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:36911e4ce32e12a54e7821f6ccf7070bec7121a4487f4cc4a60b398cd2cd7f0a","sha256:2aab2684bed7c1453b61f85d9b6efa684c918f94c6bd0ecf1e3d3201eb5dbbca"],"state_sha256":"68de0d7852972798b9e94b16659444d1fa28e1e8a449cdcf2001efe3e968b670"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ieb5/mozdOuCYMdni4buwujejIXwJksVGErmjDcYQTVHY5pIj9qKHlDRnUmEMeopD2FygsiDCPjeRaiue3kuDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T12:23:18.358333Z","bundle_sha256":"0363012696f781a03d8f616173642b74ef9deeafb880778eb4761fada9be6c41"}}