{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:AUBQA36P5OCOJMTJFQN6KZ4PPM","short_pith_number":"pith:AUBQA36P","canonical_record":{"source":{"id":"1711.04318","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-11-12T16:26:59Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"8498d1413f605794fc26c32ed909ee26a721a501bd123cc594c5f2160272ed8b","abstract_canon_sha256":"a9d1c0706eecf072f14c2b1a5772d80de7f46142a9a806bf0c3f2827f1555774"},"schema_version":"1.0"},"canonical_sha256":"0503006fcfeb84e4b2692c1be5678f7b2accabe27d3a4b64bb3a0edaa9eb7d2b","source":{"kind":"arxiv","id":"1711.04318","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.04318","created_at":"2026-05-18T00:12:14Z"},{"alias_kind":"arxiv_version","alias_value":"1711.04318v2","created_at":"2026-05-18T00:12:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.04318","created_at":"2026-05-18T00:12:14Z"},{"alias_kind":"pith_short_12","alias_value":"AUBQA36P5OCO","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"AUBQA36P5OCOJMTJ","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"AUBQA36P","created_at":"2026-05-18T12:31:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:AUBQA36P5OCOJMTJFQN6KZ4PPM","target":"record","payload":{"canonical_record":{"source":{"id":"1711.04318","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-11-12T16:26:59Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"8498d1413f605794fc26c32ed909ee26a721a501bd123cc594c5f2160272ed8b","abstract_canon_sha256":"a9d1c0706eecf072f14c2b1a5772d80de7f46142a9a806bf0c3f2827f1555774"},"schema_version":"1.0"},"canonical_sha256":"0503006fcfeb84e4b2692c1be5678f7b2accabe27d3a4b64bb3a0edaa9eb7d2b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:14.075894Z","signature_b64":"FE/ZjQkeKEspgrmNdE7kn5n6HhrQPv+3vd/pcWzAooOaXtZM9WxoGadOWBbgtSaE3zimbsOa6XwtkWsgkR24Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0503006fcfeb84e4b2692c1be5678f7b2accabe27d3a4b64bb3a0edaa9eb7d2b","last_reissued_at":"2026-05-18T00:12:14.075441Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:14.075441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.04318","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:12:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j0aBap8dohsoCO5kBDequUOfyvHimX2NQ16h/LTtd+Aev1od4tqgP3oirja0NS4bH+8Ug73h3fJedu4zX13XAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:57:49.911656Z"},"content_sha256":"d22b64130725830621d63f8c6544d5cfbbf222883a750e704ceb8d98f13b64d8","schema_version":"1.0","event_id":"sha256:d22b64130725830621d63f8c6544d5cfbbf222883a750e704ceb8d98f13b64d8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:AUBQA36P5OCOJMTJFQN6KZ4PPM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Layer-by-Layer Assembly of Efficient Flame Retardant Coatings Based On High Aspect Ratio Graphene Oxide and Chitosan Capable of Preventing Ignition of PU Foam","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.chem-ph","authors_text":"Alberto Fina, Federico Carosio, Guido Saracco, Julio Gomez, Lorenza Maddalena","submitted_at":"2017-11-12T16:26:59Z","abstract_excerpt":"The layer-by-layer (LbL) technique is adopted for the construction of multilayers encompassing chitosan and graphene oxide (GO) platelets capable of improving the flame retardant properties open cell PU foams. The LbL assembly follows a linear growth regime as evaluated by infrared spectroscopy and yields a multilayer structure where GO platelets are embedded within a chitosan continuous matrix. 3 and 6 bi-layers (BL) can efficiently coat the complex 3D structure of the foam and substantially improve its flame retardant properties. 3BL only add 10% to the original mass and can suppress the mel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.04318","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T00:12:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uYx0Ciim7kQ+I/bxW2sd/mnz5LN6Obbt7xmQaTrwXQ9ku01zbtpsMHHhRHCNHiDa1F3DpM4bAfso8S7byECvAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:57:49.912010Z"},"content_sha256":"2ed3171221f46ffd837de40a59e7b887ad8fc73093a3af7ca15efc12e0e5c6c5","schema_version":"1.0","event_id":"sha256:2ed3171221f46ffd837de40a59e7b887ad8fc73093a3af7ca15efc12e0e5c6c5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AUBQA36P5OCOJMTJFQN6KZ4PPM/bundle.json","state_url":"https://pith.science/pith/AUBQA36P5OCOJMTJFQN6KZ4PPM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AUBQA36P5OCOJMTJFQN6KZ4PPM/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":"2026-06-05T12:57:49Z","links":{"resolver":"https://pith.science/pith/AUBQA36P5OCOJMTJFQN6KZ4PPM","bundle":"https://pith.science/pith/AUBQA36P5OCOJMTJFQN6KZ4PPM/bundle.json","state":"https://pith.science/pith/AUBQA36P5OCOJMTJFQN6KZ4PPM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AUBQA36P5OCOJMTJFQN6KZ4PPM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:AUBQA36P5OCOJMTJFQN6KZ4PPM","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":"a9d1c0706eecf072f14c2b1a5772d80de7f46142a9a806bf0c3f2827f1555774","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-11-12T16:26:59Z","title_canon_sha256":"8498d1413f605794fc26c32ed909ee26a721a501bd123cc594c5f2160272ed8b"},"schema_version":"1.0","source":{"id":"1711.04318","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.04318","created_at":"2026-05-18T00:12:14Z"},{"alias_kind":"arxiv_version","alias_value":"1711.04318v2","created_at":"2026-05-18T00:12:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.04318","created_at":"2026-05-18T00:12:14Z"},{"alias_kind":"pith_short_12","alias_value":"AUBQA36P5OCO","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"AUBQA36P5OCOJMTJ","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"AUBQA36P","created_at":"2026-05-18T12:31:08Z"}],"graph_snapshots":[{"event_id":"sha256:2ed3171221f46ffd837de40a59e7b887ad8fc73093a3af7ca15efc12e0e5c6c5","target":"graph","created_at":"2026-05-18T00:12:14Z","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"},"paper":{"abstract_excerpt":"The layer-by-layer (LbL) technique is adopted for the construction of multilayers encompassing chitosan and graphene oxide (GO) platelets capable of improving the flame retardant properties open cell PU foams. The LbL assembly follows a linear growth regime as evaluated by infrared spectroscopy and yields a multilayer structure where GO platelets are embedded within a chitosan continuous matrix. 3 and 6 bi-layers (BL) can efficiently coat the complex 3D structure of the foam and substantially improve its flame retardant properties. 3BL only add 10% to the original mass and can suppress the mel","authors_text":"Alberto Fina, Federico Carosio, Guido Saracco, Julio Gomez, Lorenza Maddalena","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-11-12T16:26:59Z","title":"Layer-by-Layer Assembly of Efficient Flame Retardant Coatings Based On High Aspect Ratio Graphene Oxide and Chitosan Capable of Preventing Ignition of PU Foam"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.04318","kind":"arxiv","version":2},"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:d22b64130725830621d63f8c6544d5cfbbf222883a750e704ceb8d98f13b64d8","target":"record","created_at":"2026-05-18T00:12:14Z","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":"a9d1c0706eecf072f14c2b1a5772d80de7f46142a9a806bf0c3f2827f1555774","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-11-12T16:26:59Z","title_canon_sha256":"8498d1413f605794fc26c32ed909ee26a721a501bd123cc594c5f2160272ed8b"},"schema_version":"1.0","source":{"id":"1711.04318","kind":"arxiv","version":2}},"canonical_sha256":"0503006fcfeb84e4b2692c1be5678f7b2accabe27d3a4b64bb3a0edaa9eb7d2b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0503006fcfeb84e4b2692c1be5678f7b2accabe27d3a4b64bb3a0edaa9eb7d2b","first_computed_at":"2026-05-18T00:12:14.075441Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:14.075441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FE/ZjQkeKEspgrmNdE7kn5n6HhrQPv+3vd/pcWzAooOaXtZM9WxoGadOWBbgtSaE3zimbsOa6XwtkWsgkR24Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:14.075894Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.04318","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d22b64130725830621d63f8c6544d5cfbbf222883a750e704ceb8d98f13b64d8","sha256:2ed3171221f46ffd837de40a59e7b887ad8fc73093a3af7ca15efc12e0e5c6c5"],"state_sha256":"b692f3d26dfc0a030493528bf123cc6649613aa8f26af6a853598ba4f6be7be2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3UyeNLF8LdZ2qRM6tm/kZbOIc0FhSo1myMBdPsxk2S4E4p0V23OErmpd9+yA7viMlN2whYv1CQ8tDDuS0+kIBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T12:57:49.914038Z","bundle_sha256":"7f6daa0bb435afacc282e4a0d7df8540fa6ecc444f0282f48ce24d55f88a584a"}}