{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:UNP6HMEK6YSF2Z7K2Q6OZAFFLD","short_pith_number":"pith:UNP6HMEK","canonical_record":{"source":{"id":"1904.05778","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2019-04-10T08:12:14Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"fc61413c2904fa4c47543488170c2ca2cf76f970dd0a5e1f3972b70083a66a89","abstract_canon_sha256":"32e5e7b3029b51794e6984498cdf3e989ddcbc69a934be6d6a839a06de8249ab"},"schema_version":"1.0"},"canonical_sha256":"a35fe3b08af6245d67ead43cec80a558ccb81f968ff391707334d5ac91c2b91d","source":{"kind":"arxiv","id":"1904.05778","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.05778","created_at":"2026-05-17T23:48:48Z"},{"alias_kind":"arxiv_version","alias_value":"1904.05778v1","created_at":"2026-05-17T23:48:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.05778","created_at":"2026-05-17T23:48:48Z"},{"alias_kind":"pith_short_12","alias_value":"UNP6HMEK6YSF","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UNP6HMEK6YSF2Z7K","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UNP6HMEK","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:UNP6HMEK6YSF2Z7K2Q6OZAFFLD","target":"record","payload":{"canonical_record":{"source":{"id":"1904.05778","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2019-04-10T08:12:14Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"fc61413c2904fa4c47543488170c2ca2cf76f970dd0a5e1f3972b70083a66a89","abstract_canon_sha256":"32e5e7b3029b51794e6984498cdf3e989ddcbc69a934be6d6a839a06de8249ab"},"schema_version":"1.0"},"canonical_sha256":"a35fe3b08af6245d67ead43cec80a558ccb81f968ff391707334d5ac91c2b91d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:48.485929Z","signature_b64":"B+5GD1WROHwl16Gx67B6OEAEOxaxg5+94gfXK7El3dYPFp2+LETrWYFtBrrhz9WBJK6FZ75dLSsUeqGIsayKBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a35fe3b08af6245d67ead43cec80a558ccb81f968ff391707334d5ac91c2b91d","last_reissued_at":"2026-05-17T23:48:48.485430Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:48.485430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.05778","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":"2026-05-17T23:48:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tGSu+DisemvizV9momj+es11YHZGJjdTihHYkJfx/yDWyCOj4oGi1QfcopAOsz929AVj87gv4VqJscHGRWjtCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:09:28.621236Z"},"content_sha256":"d2208abd72e95137a959594b74c3dec9c1c7cad860501fb8f1d921ba74a6ad04","schema_version":"1.0","event_id":"sha256:d2208abd72e95137a959594b74c3dec9c1c7cad860501fb8f1d921ba74a6ad04"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:UNP6HMEK6YSF2Z7K2Q6OZAFFLD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bragg's reflection for walking droplets in 1D crystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.flu-dyn","authors_text":"Boris Filoux, Maxime Hubert, Nicolas Vandewalle","submitted_at":"2019-04-10T08:12:14Z","abstract_excerpt":"A walking droplet possesses fascinating properties due to its peculiar wave/particle interaction. The self-propelling motion of such a droplet is driven by the Faraday instability triggered around the droplet at each impact. We studied in this article how such a droplet behaves in an annular cavity where a periodic pattern is placed underneath the liquid-air interface, altering the Faraday instability. We show that, while the annulus ensures a circular motion of the droplet, the periodic pattern affects the global droplet motion. Similarly to electromagnetic waves in photonic crystals, the ave"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.05778","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":""},"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":"2026-05-17T23:48:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NwTEwVSe+cgGeUVmQ55eJQq5RHz44ck7GfO9ljlBDuO3xOaZFnpjOaK3qV3Jz9+RaBIcOVucycVuTyzfl1YfAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:09:28.621943Z"},"content_sha256":"646052c850d1694e89c69f26eed5fd43b5f466f4ee92999383227739d86b111a","schema_version":"1.0","event_id":"sha256:646052c850d1694e89c69f26eed5fd43b5f466f4ee92999383227739d86b111a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UNP6HMEK6YSF2Z7K2Q6OZAFFLD/bundle.json","state_url":"https://pith.science/pith/UNP6HMEK6YSF2Z7K2Q6OZAFFLD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UNP6HMEK6YSF2Z7K2Q6OZAFFLD/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":"2026-05-26T09:09:28Z","links":{"resolver":"https://pith.science/pith/UNP6HMEK6YSF2Z7K2Q6OZAFFLD","bundle":"https://pith.science/pith/UNP6HMEK6YSF2Z7K2Q6OZAFFLD/bundle.json","state":"https://pith.science/pith/UNP6HMEK6YSF2Z7K2Q6OZAFFLD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UNP6HMEK6YSF2Z7K2Q6OZAFFLD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UNP6HMEK6YSF2Z7K2Q6OZAFFLD","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":"32e5e7b3029b51794e6984498cdf3e989ddcbc69a934be6d6a839a06de8249ab","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2019-04-10T08:12:14Z","title_canon_sha256":"fc61413c2904fa4c47543488170c2ca2cf76f970dd0a5e1f3972b70083a66a89"},"schema_version":"1.0","source":{"id":"1904.05778","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.05778","created_at":"2026-05-17T23:48:48Z"},{"alias_kind":"arxiv_version","alias_value":"1904.05778v1","created_at":"2026-05-17T23:48:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.05778","created_at":"2026-05-17T23:48:48Z"},{"alias_kind":"pith_short_12","alias_value":"UNP6HMEK6YSF","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UNP6HMEK6YSF2Z7K","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UNP6HMEK","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:646052c850d1694e89c69f26eed5fd43b5f466f4ee92999383227739d86b111a","target":"graph","created_at":"2026-05-17T23:48:48Z","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":"A walking droplet possesses fascinating properties due to its peculiar wave/particle interaction. The self-propelling motion of such a droplet is driven by the Faraday instability triggered around the droplet at each impact. We studied in this article how such a droplet behaves in an annular cavity where a periodic pattern is placed underneath the liquid-air interface, altering the Faraday instability. We show that, while the annulus ensures a circular motion of the droplet, the periodic pattern affects the global droplet motion. Similarly to electromagnetic waves in photonic crystals, the ave","authors_text":"Boris Filoux, Maxime Hubert, Nicolas Vandewalle","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2019-04-10T08:12:14Z","title":"Bragg's reflection for walking droplets in 1D crystals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.05778","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:d2208abd72e95137a959594b74c3dec9c1c7cad860501fb8f1d921ba74a6ad04","target":"record","created_at":"2026-05-17T23:48:48Z","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":"32e5e7b3029b51794e6984498cdf3e989ddcbc69a934be6d6a839a06de8249ab","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2019-04-10T08:12:14Z","title_canon_sha256":"fc61413c2904fa4c47543488170c2ca2cf76f970dd0a5e1f3972b70083a66a89"},"schema_version":"1.0","source":{"id":"1904.05778","kind":"arxiv","version":1}},"canonical_sha256":"a35fe3b08af6245d67ead43cec80a558ccb81f968ff391707334d5ac91c2b91d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a35fe3b08af6245d67ead43cec80a558ccb81f968ff391707334d5ac91c2b91d","first_computed_at":"2026-05-17T23:48:48.485430Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:48.485430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B+5GD1WROHwl16Gx67B6OEAEOxaxg5+94gfXK7El3dYPFp2+LETrWYFtBrrhz9WBJK6FZ75dLSsUeqGIsayKBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:48.485929Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.05778","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d2208abd72e95137a959594b74c3dec9c1c7cad860501fb8f1d921ba74a6ad04","sha256:646052c850d1694e89c69f26eed5fd43b5f466f4ee92999383227739d86b111a"],"state_sha256":"ca9323651377c22d786f1a0d106dacec02c032da2cdb1b3f2a2bb69309d54fc7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"94nft5wEAqe5nco//QlKnLAaIzn0YO1DpinJw9xgMFc/1nxjZIr4y4O83dqn35uscAMo1j4YDFkdQ7lYfYPaDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T09:09:28.625542Z","bundle_sha256":"36743648e64ebe9db3555dda33c6e5954bb999a2113c6380baae8f8d50fcdea3"}}