{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:EA7HT5HIOX63H6C7BPHPH5LDS3","short_pith_number":"pith:EA7HT5HI","canonical_record":{"source":{"id":"2106.15045","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-06-29T01:16:01Z","cross_cats_sorted":["cs.AI","cs.RO"],"title_canon_sha256":"38853eef9144e2f3251e64ff0ef8e2b992af4f3840f1907f9d31c283143d8916","abstract_canon_sha256":"8f36582393d963894139feaceab2aa330e67c2081ad8a8bcca064ba255e9b6cd"},"schema_version":"1.0"},"canonical_sha256":"203e79f4e875fdb3f85f0bcef3f56396d8eff136e5e0d8381f219f1df51005d3","source":{"kind":"arxiv","id":"2106.15045","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.15045","created_at":"2026-07-05T02:53:04Z"},{"alias_kind":"arxiv_version","alias_value":"2106.15045v1","created_at":"2026-07-05T02:53:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.15045","created_at":"2026-07-05T02:53:04Z"},{"alias_kind":"pith_short_12","alias_value":"EA7HT5HIOX63","created_at":"2026-07-05T02:53:04Z"},{"alias_kind":"pith_short_16","alias_value":"EA7HT5HIOX63H6C7","created_at":"2026-07-05T02:53:04Z"},{"alias_kind":"pith_short_8","alias_value":"EA7HT5HI","created_at":"2026-07-05T02:53:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:EA7HT5HIOX63H6C7BPHPH5LDS3","target":"record","payload":{"canonical_record":{"source":{"id":"2106.15045","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-06-29T01:16:01Z","cross_cats_sorted":["cs.AI","cs.RO"],"title_canon_sha256":"38853eef9144e2f3251e64ff0ef8e2b992af4f3840f1907f9d31c283143d8916","abstract_canon_sha256":"8f36582393d963894139feaceab2aa330e67c2081ad8a8bcca064ba255e9b6cd"},"schema_version":"1.0"},"canonical_sha256":"203e79f4e875fdb3f85f0bcef3f56396d8eff136e5e0d8381f219f1df51005d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:53:04.652353Z","signature_b64":"ONToO9MQCmdHuPvMpaOCkZSByJXR7/JGFJHScrj9QSlB9NfUfavWSmJr8S+x8Hyxt1a6eEkWBeqoiqaNWOqcDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"203e79f4e875fdb3f85f0bcef3f56396d8eff136e5e0d8381f219f1df51005d3","last_reissued_at":"2026-07-05T02:53:04.651886Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:53:04.651886Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.15045","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":"2026-07-05T02:53:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j8OxSloLJv1KklD26tSFIoKlX6oe7i491rWTy7DYyvz0Y0fUGvcNuPRpb5jCh7iINkDm0gbOUS2XnYuF5gH0Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-24T04:41:47.198982Z"},"content_sha256":"173e0bc7dacb542ef80f57a3d121035ff4394785f7af5a5da2b001b80ac36791","schema_version":"1.0","event_id":"sha256:173e0bc7dacb542ef80f57a3d121035ff4394785f7af5a5da2b001b80ac36791"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:EA7HT5HIOX63H6C7BPHPH5LDS3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"EVPropNet: Detecting Drones By Finding Propellers For Mid-Air Landing And Following","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","cs.RO"],"primary_cat":"cs.CV","authors_text":"Chahat Deep Singh, Chethan M. Parameshwara, Cornelia Ferm\\\"uller, Guido C.H.E. de Croon, Nitin J. Sanket, Yiannis Aloimonos","submitted_at":"2021-06-29T01:16:01Z","abstract_excerpt":"The rapid rise of accessibility of unmanned aerial vehicles or drones pose a threat to general security and confidentiality. Most of the commercially available or custom-built drones are multi-rotors and are comprised of multiple propellers. Since these propellers rotate at a high-speed, they are generally the fastest moving parts of an image and cannot be directly \"seen\" by a classical camera without severe motion blur. We utilize a class of sensors that are particularly suitable for such scenarios called event cameras, which have a high temporal resolution, low-latency, and high dynamic rang"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.15045","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/2106.15045/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":"2026-07-05T02:53:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a+NK7n1KA/jNLODFox+Nh6OTNTeXx+i2BMVrGFLYqMIw2bMU7JonRk5E83v+Gyf2Sb/7Xq4dpVqCVngYfJZ8BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-24T04:41:47.199374Z"},"content_sha256":"029d7e52566213aae07625a7de7585677b81f5d88ae5752d474a9235c60bb5c8","schema_version":"1.0","event_id":"sha256:029d7e52566213aae07625a7de7585677b81f5d88ae5752d474a9235c60bb5c8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EA7HT5HIOX63H6C7BPHPH5LDS3/bundle.json","state_url":"https://pith.science/pith/EA7HT5HIOX63H6C7BPHPH5LDS3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EA7HT5HIOX63H6C7BPHPH5LDS3/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":"2026-07-24T04:41:47Z","links":{"resolver":"https://pith.science/pith/EA7HT5HIOX63H6C7BPHPH5LDS3","bundle":"https://pith.science/pith/EA7HT5HIOX63H6C7BPHPH5LDS3/bundle.json","state":"https://pith.science/pith/EA7HT5HIOX63H6C7BPHPH5LDS3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EA7HT5HIOX63H6C7BPHPH5LDS3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:EA7HT5HIOX63H6C7BPHPH5LDS3","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":"8f36582393d963894139feaceab2aa330e67c2081ad8a8bcca064ba255e9b6cd","cross_cats_sorted":["cs.AI","cs.RO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-06-29T01:16:01Z","title_canon_sha256":"38853eef9144e2f3251e64ff0ef8e2b992af4f3840f1907f9d31c283143d8916"},"schema_version":"1.0","source":{"id":"2106.15045","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.15045","created_at":"2026-07-05T02:53:04Z"},{"alias_kind":"arxiv_version","alias_value":"2106.15045v1","created_at":"2026-07-05T02:53:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.15045","created_at":"2026-07-05T02:53:04Z"},{"alias_kind":"pith_short_12","alias_value":"EA7HT5HIOX63","created_at":"2026-07-05T02:53:04Z"},{"alias_kind":"pith_short_16","alias_value":"EA7HT5HIOX63H6C7","created_at":"2026-07-05T02:53:04Z"},{"alias_kind":"pith_short_8","alias_value":"EA7HT5HI","created_at":"2026-07-05T02:53:04Z"}],"graph_snapshots":[{"event_id":"sha256:029d7e52566213aae07625a7de7585677b81f5d88ae5752d474a9235c60bb5c8","target":"graph","created_at":"2026-07-05T02:53:04Z","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/2106.15045/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The rapid rise of accessibility of unmanned aerial vehicles or drones pose a threat to general security and confidentiality. Most of the commercially available or custom-built drones are multi-rotors and are comprised of multiple propellers. Since these propellers rotate at a high-speed, they are generally the fastest moving parts of an image and cannot be directly \"seen\" by a classical camera without severe motion blur. We utilize a class of sensors that are particularly suitable for such scenarios called event cameras, which have a high temporal resolution, low-latency, and high dynamic rang","authors_text":"Chahat Deep Singh, Chethan M. Parameshwara, Cornelia Ferm\\\"uller, Guido C.H.E. de Croon, Nitin J. Sanket, Yiannis Aloimonos","cross_cats":["cs.AI","cs.RO"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-06-29T01:16:01Z","title":"EVPropNet: Detecting Drones By Finding Propellers For Mid-Air Landing And Following"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.15045","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":"sha256:173e0bc7dacb542ef80f57a3d121035ff4394785f7af5a5da2b001b80ac36791","target":"record","created_at":"2026-07-05T02:53:04Z","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":"8f36582393d963894139feaceab2aa330e67c2081ad8a8bcca064ba255e9b6cd","cross_cats_sorted":["cs.AI","cs.RO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-06-29T01:16:01Z","title_canon_sha256":"38853eef9144e2f3251e64ff0ef8e2b992af4f3840f1907f9d31c283143d8916"},"schema_version":"1.0","source":{"id":"2106.15045","kind":"arxiv","version":1}},"canonical_sha256":"203e79f4e875fdb3f85f0bcef3f56396d8eff136e5e0d8381f219f1df51005d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"203e79f4e875fdb3f85f0bcef3f56396d8eff136e5e0d8381f219f1df51005d3","first_computed_at":"2026-07-05T02:53:04.651886Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:53:04.651886Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ONToO9MQCmdHuPvMpaOCkZSByJXR7/JGFJHScrj9QSlB9NfUfavWSmJr8S+x8Hyxt1a6eEkWBeqoiqaNWOqcDg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:53:04.652353Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.15045","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:173e0bc7dacb542ef80f57a3d121035ff4394785f7af5a5da2b001b80ac36791","sha256:029d7e52566213aae07625a7de7585677b81f5d88ae5752d474a9235c60bb5c8"],"state_sha256":"f48c6d3f99a1e3314f3649d751e33faa19e7a6514416f776c1955054bc5d7506"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2ftzgz+TIXqrgV54Ksk1avPO+X/MVMoAvu1mj5uIZdD1AYu/YZmp7jnlpPsvVX8ly4S6NqQxu0h05qu6SnO+DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-24T04:41:47.201522Z","bundle_sha256":"1691f4424a04498b771dea9d547869ef5f114da258454a6f9cdf7d8fe304be5f"}}