{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:YOUXS5DWDR6KA5OZACZDT3WQ2J","short_pith_number":"pith:YOUXS5DW","canonical_record":{"source":{"id":"2608.04425","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2026-08-05T04:09:16Z","cross_cats_sorted":[],"title_canon_sha256":"339a3e4f215c692ffc9ad08f07cca39ed086347f7a518b4f58deba98387656de","abstract_canon_sha256":"8645bc05f2cb382e60c28b28ad9f8a6b7db8fac1cc43ace4ca775f053ffc94fa"},"schema_version":"1.0"},"canonical_sha256":"c3a97974761c7ca075d900b239eed0d26fc7d3fa9362bdcb5629b98d31fa720a","source":{"kind":"arxiv","id":"2608.04425","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.04425","created_at":"2026-08-06T01:35:24Z"},{"alias_kind":"arxiv_version","alias_value":"2608.04425v1","created_at":"2026-08-06T01:35:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.04425","created_at":"2026-08-06T01:35:24Z"},{"alias_kind":"pith_short_12","alias_value":"YOUXS5DWDR6K","created_at":"2026-08-06T01:35:24Z"},{"alias_kind":"pith_short_16","alias_value":"YOUXS5DWDR6KA5OZ","created_at":"2026-08-06T01:35:24Z"},{"alias_kind":"pith_short_8","alias_value":"YOUXS5DW","created_at":"2026-08-06T01:35:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:YOUXS5DWDR6KA5OZACZDT3WQ2J","target":"record","payload":{"canonical_record":{"source":{"id":"2608.04425","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2026-08-05T04:09:16Z","cross_cats_sorted":[],"title_canon_sha256":"339a3e4f215c692ffc9ad08f07cca39ed086347f7a518b4f58deba98387656de","abstract_canon_sha256":"8645bc05f2cb382e60c28b28ad9f8a6b7db8fac1cc43ace4ca775f053ffc94fa"},"schema_version":"1.0"},"canonical_sha256":"c3a97974761c7ca075d900b239eed0d26fc7d3fa9362bdcb5629b98d31fa720a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-06T01:35:24.256805Z","signature_b64":"U1c4t5alEch12oaJec8iAHoJ58x3D/eB38vceAHfAUODZKpTgI4CFsoBidKTObG/bWs72AS4mevecRI5KViMDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c3a97974761c7ca075d900b239eed0d26fc7d3fa9362bdcb5629b98d31fa720a","last_reissued_at":"2026-08-06T01:35:24.255266Z","signature_status":"signed_v1","first_computed_at":"2026-08-06T01:35:24.255266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.04425","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":"2026-08-06T01:35:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wD/Ymq7kxg/vrmsZz30Chl/yD/69lBnnFoe0xSYl7gaXo7WWh0YKzh+n1VEzzm5s5qra+m+1WR3CXzTqWZlBBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T11:13:53.210640Z"},"content_sha256":"2b042ecf58ac8912a39746152ba3e443a42116045f17e8280db6a6fa90829976","schema_version":"1.0","event_id":"sha256:2b042ecf58ac8912a39746152ba3e443a42116045f17e8280db6a6fa90829976"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:YOUXS5DWDR6KA5OZACZDT3WQ2J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SSC: A Verifiable Structured Representation for Bimanual Manipulation Labelling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.RO","authors_text":"Jia Pan, Marcus Kalander, Ruihua Han, Shuang Wu, Sihan Chen, Yichen Zhang, Yupu Lu","submitted_at":"2026-08-05T04:09:16Z","abstract_excerpt":"Subtask labels decompose a long-horizon manipulation demonstration into shorter semantic segments for policy training and evaluation. Natural language descriptions are easy to read, but their linguistic variability makes automatic verification difficult. Rigid template formats, such as BEHAVIOR-1K's skill_annotation, are linguistically over-segmented, hindering both readability and annotation consistency. We propose the Structured Subtask Chain (SSC), a state-transition representation that bridges these extremes. A demonstration is a sequence of Structured Subtask Template (SST) entries. Each "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.04425","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/2608.04425/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":"2026-08-06T01:35:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QdTYlQijsQj3cWVr4EVQfKLrl4mdZJle65P9LFZ2mwnRzK8ci+R7KPICuKFzvTzIcwNorkJk8UBK0dy0pcTGBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T11:13:53.211149Z"},"content_sha256":"f2c097ef6fb6ee815697be98dd25e5f40f122c6ebb3253cbcda74bf0840f9776","schema_version":"1.0","event_id":"sha256:f2c097ef6fb6ee815697be98dd25e5f40f122c6ebb3253cbcda74bf0840f9776"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YOUXS5DWDR6KA5OZACZDT3WQ2J/bundle.json","state_url":"https://pith.science/pith/YOUXS5DWDR6KA5OZACZDT3WQ2J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YOUXS5DWDR6KA5OZACZDT3WQ2J/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":"2026-08-08T11:13:53Z","links":{"resolver":"https://pith.science/pith/YOUXS5DWDR6KA5OZACZDT3WQ2J","bundle":"https://pith.science/pith/YOUXS5DWDR6KA5OZACZDT3WQ2J/bundle.json","state":"https://pith.science/pith/YOUXS5DWDR6KA5OZACZDT3WQ2J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YOUXS5DWDR6KA5OZACZDT3WQ2J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:YOUXS5DWDR6KA5OZACZDT3WQ2J","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":"8645bc05f2cb382e60c28b28ad9f8a6b7db8fac1cc43ace4ca775f053ffc94fa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2026-08-05T04:09:16Z","title_canon_sha256":"339a3e4f215c692ffc9ad08f07cca39ed086347f7a518b4f58deba98387656de"},"schema_version":"1.0","source":{"id":"2608.04425","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.04425","created_at":"2026-08-06T01:35:24Z"},{"alias_kind":"arxiv_version","alias_value":"2608.04425v1","created_at":"2026-08-06T01:35:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.04425","created_at":"2026-08-06T01:35:24Z"},{"alias_kind":"pith_short_12","alias_value":"YOUXS5DWDR6K","created_at":"2026-08-06T01:35:24Z"},{"alias_kind":"pith_short_16","alias_value":"YOUXS5DWDR6KA5OZ","created_at":"2026-08-06T01:35:24Z"},{"alias_kind":"pith_short_8","alias_value":"YOUXS5DW","created_at":"2026-08-06T01:35:24Z"}],"graph_snapshots":[{"event_id":"sha256:f2c097ef6fb6ee815697be98dd25e5f40f122c6ebb3253cbcda74bf0840f9776","target":"graph","created_at":"2026-08-06T01:35:24Z","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/2608.04425/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Subtask labels decompose a long-horizon manipulation demonstration into shorter semantic segments for policy training and evaluation. Natural language descriptions are easy to read, but their linguistic variability makes automatic verification difficult. Rigid template formats, such as BEHAVIOR-1K's skill_annotation, are linguistically over-segmented, hindering both readability and annotation consistency. We propose the Structured Subtask Chain (SSC), a state-transition representation that bridges these extremes. A demonstration is a sequence of Structured Subtask Template (SST) entries. Each ","authors_text":"Jia Pan, Marcus Kalander, Ruihua Han, Shuang Wu, Sihan Chen, Yichen Zhang, Yupu Lu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2026-08-05T04:09:16Z","title":"SSC: A Verifiable Structured Representation for Bimanual Manipulation Labelling"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.04425","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":"sha256:2b042ecf58ac8912a39746152ba3e443a42116045f17e8280db6a6fa90829976","target":"record","created_at":"2026-08-06T01:35:24Z","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":"8645bc05f2cb382e60c28b28ad9f8a6b7db8fac1cc43ace4ca775f053ffc94fa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2026-08-05T04:09:16Z","title_canon_sha256":"339a3e4f215c692ffc9ad08f07cca39ed086347f7a518b4f58deba98387656de"},"schema_version":"1.0","source":{"id":"2608.04425","kind":"arxiv","version":1}},"canonical_sha256":"c3a97974761c7ca075d900b239eed0d26fc7d3fa9362bdcb5629b98d31fa720a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c3a97974761c7ca075d900b239eed0d26fc7d3fa9362bdcb5629b98d31fa720a","first_computed_at":"2026-08-06T01:35:24.255266Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-06T01:35:24.255266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U1c4t5alEch12oaJec8iAHoJ58x3D/eB38vceAHfAUODZKpTgI4CFsoBidKTObG/bWs72AS4mevecRI5KViMDA==","signature_status":"signed_v1","signed_at":"2026-08-06T01:35:24.256805Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.04425","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b042ecf58ac8912a39746152ba3e443a42116045f17e8280db6a6fa90829976","sha256:f2c097ef6fb6ee815697be98dd25e5f40f122c6ebb3253cbcda74bf0840f9776"],"state_sha256":"59422c598f625678f4309c5b60ee76263bae2ca6025ed3bb2abfa753bae9410b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K+RWh310xW2TldYBQ7wjsmouaIl2w7IPx0bWzCAuTJ9CbQwMt32sSTxX/0qgEQcrfkPSdCABRaTS5/TG7t4DCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T11:13:53.216099Z","bundle_sha256":"5ba33fca7b78375ba443d614b3ad28fa49aa4cef6b650c03399696e06073f1e3"}}