{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:URTOTFYSE3IKLEA4VCY3UJ57TJ","short_pith_number":"pith:URTOTFYS","canonical_record":{"source":{"id":"1906.09037","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-06-21T10:01:11Z","cross_cats_sorted":["cs.PF"],"title_canon_sha256":"9dce76fa84183f85879a5a66f10ee1b1d69aa0f4de47fb3b35953c00dc0a96ab","abstract_canon_sha256":"5856cf02870cef7572498a5cb0168056663cc08a2f1a053c3e598a1aa6afe0ec"},"schema_version":"1.0"},"canonical_sha256":"a466e9971226d0a5901ca8b1ba27bf9a56b61856aa42eca8a065edab39850cd6","source":{"kind":"arxiv","id":"1906.09037","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.09037","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"arxiv_version","alias_value":"1906.09037v1","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.09037","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"pith_short_12","alias_value":"URTOTFYSE3IK","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"URTOTFYSE3IKLEA4","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"URTOTFYS","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:URTOTFYSE3IKLEA4VCY3UJ57TJ","target":"record","payload":{"canonical_record":{"source":{"id":"1906.09037","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-06-21T10:01:11Z","cross_cats_sorted":["cs.PF"],"title_canon_sha256":"9dce76fa84183f85879a5a66f10ee1b1d69aa0f4de47fb3b35953c00dc0a96ab","abstract_canon_sha256":"5856cf02870cef7572498a5cb0168056663cc08a2f1a053c3e598a1aa6afe0ec"},"schema_version":"1.0"},"canonical_sha256":"a466e9971226d0a5901ca8b1ba27bf9a56b61856aa42eca8a065edab39850cd6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:44.752837Z","signature_b64":"QnuLTXj2mIbUy2dFjFn7jWqxUDaWumbnzyL4fqDvZPsa60E5ZBo/jhNq5ZK96AOOeNNA9DfQXDBTYChAcs+KBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a466e9971226d0a5901ca8b1ba27bf9a56b61856aa42eca8a065edab39850cd6","last_reissued_at":"2026-05-17T23:42:44.752219Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:44.752219Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.09037","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":"2026-05-17T23:42:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9aFh0CJ2EhcwQMTt6bj5HIv7Ev0sSl0VEL8QI5uwRkxnvL2iv4FJDlPGEIAheB457aPTsYd1AGCeXIfSVIsvDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:44:47.530338Z"},"content_sha256":"3c4191149133de051ef32baf995176941b5e4a88f46cfb8e99be9dce6b269046","schema_version":"1.0","event_id":"sha256:3c4191149133de051ef32baf995176941b5e4a88f46cfb8e99be9dce6b269046"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:URTOTFYSE3IKLEA4VCY3UJ57TJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Beaconless Asymmetric Energy-Efficient Time Synchronization Scheme for Resource-Constrained Multi-Hop Wireless Sensor Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.PF"],"primary_cat":"cs.NI","authors_text":"Alan Marshall, Eng Gee Lim, Kyeong Soo Kim, Sanghyuk Lee, Xintao Huan","submitted_at":"2019-06-21T10:01:11Z","abstract_excerpt":"The ever-increasing number of WSN deployments based on a large number of battery-powered, low-cost sensor nodes, which are limited in their computing and power resources, puts the focus of WSN time synchronization research on three major aspects, i.e., accuracy, energy consumption and computational complexity. In the literature, the latter two aspects have not received much attention compared to the accuracy of WSN time synchronization. Especially in multi-hop WSNs, intermediate gateway nodes are overloaded with tasks for not only relaying messages but also a variety of computations for their "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.09037","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":"2026-05-17T23:42:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ttjG3Mzw5EKvn4m8e7dgeJWOMQ4lOzTAxTfLx+MlG9cR8+qWuyj76zSXjo5+GRo896WaMoZLQKMShgBbtUepBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:44:47.531013Z"},"content_sha256":"e2251af26cefb6f46933458713b6dfde140bb850f5717e99b742ed78e018dd26","schema_version":"1.0","event_id":"sha256:e2251af26cefb6f46933458713b6dfde140bb850f5717e99b742ed78e018dd26"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/URTOTFYSE3IKLEA4VCY3UJ57TJ/bundle.json","state_url":"https://pith.science/pith/URTOTFYSE3IKLEA4VCY3UJ57TJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/URTOTFYSE3IKLEA4VCY3UJ57TJ/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":"2026-05-28T20:44:47Z","links":{"resolver":"https://pith.science/pith/URTOTFYSE3IKLEA4VCY3UJ57TJ","bundle":"https://pith.science/pith/URTOTFYSE3IKLEA4VCY3UJ57TJ/bundle.json","state":"https://pith.science/pith/URTOTFYSE3IKLEA4VCY3UJ57TJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/URTOTFYSE3IKLEA4VCY3UJ57TJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:URTOTFYSE3IKLEA4VCY3UJ57TJ","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":"5856cf02870cef7572498a5cb0168056663cc08a2f1a053c3e598a1aa6afe0ec","cross_cats_sorted":["cs.PF"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-06-21T10:01:11Z","title_canon_sha256":"9dce76fa84183f85879a5a66f10ee1b1d69aa0f4de47fb3b35953c00dc0a96ab"},"schema_version":"1.0","source":{"id":"1906.09037","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.09037","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"arxiv_version","alias_value":"1906.09037v1","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.09037","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"pith_short_12","alias_value":"URTOTFYSE3IK","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"URTOTFYSE3IKLEA4","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"URTOTFYS","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:e2251af26cefb6f46933458713b6dfde140bb850f5717e99b742ed78e018dd26","target":"graph","created_at":"2026-05-17T23:42:44Z","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 ever-increasing number of WSN deployments based on a large number of battery-powered, low-cost sensor nodes, which are limited in their computing and power resources, puts the focus of WSN time synchronization research on three major aspects, i.e., accuracy, energy consumption and computational complexity. In the literature, the latter two aspects have not received much attention compared to the accuracy of WSN time synchronization. Especially in multi-hop WSNs, intermediate gateway nodes are overloaded with tasks for not only relaying messages but also a variety of computations for their ","authors_text":"Alan Marshall, Eng Gee Lim, Kyeong Soo Kim, Sanghyuk Lee, Xintao Huan","cross_cats":["cs.PF"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-06-21T10:01:11Z","title":"A Beaconless Asymmetric Energy-Efficient Time Synchronization Scheme for Resource-Constrained Multi-Hop Wireless Sensor Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.09037","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":"sha256:3c4191149133de051ef32baf995176941b5e4a88f46cfb8e99be9dce6b269046","target":"record","created_at":"2026-05-17T23:42:44Z","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":"5856cf02870cef7572498a5cb0168056663cc08a2f1a053c3e598a1aa6afe0ec","cross_cats_sorted":["cs.PF"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-06-21T10:01:11Z","title_canon_sha256":"9dce76fa84183f85879a5a66f10ee1b1d69aa0f4de47fb3b35953c00dc0a96ab"},"schema_version":"1.0","source":{"id":"1906.09037","kind":"arxiv","version":1}},"canonical_sha256":"a466e9971226d0a5901ca8b1ba27bf9a56b61856aa42eca8a065edab39850cd6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a466e9971226d0a5901ca8b1ba27bf9a56b61856aa42eca8a065edab39850cd6","first_computed_at":"2026-05-17T23:42:44.752219Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:44.752219Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QnuLTXj2mIbUy2dFjFn7jWqxUDaWumbnzyL4fqDvZPsa60E5ZBo/jhNq5ZK96AOOeNNA9DfQXDBTYChAcs+KBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:44.752837Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.09037","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c4191149133de051ef32baf995176941b5e4a88f46cfb8e99be9dce6b269046","sha256:e2251af26cefb6f46933458713b6dfde140bb850f5717e99b742ed78e018dd26"],"state_sha256":"4b18376affbda57e971be6f36c43f6441bb51b584be96ebb98c26e254d75aabe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rn0W8VoLUC9LRHLCGr8r+Tx1qB8NqNteMuSuMjUQ5RXFDiklZ1jza3i6W0gxJU/93IoLLgeiEbV3CVlQp4SmDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T20:44:47.534839Z","bundle_sha256":"c5f4af7f2ebfe0286e2a4951ee6c6f8cbd6555e1dc01840c154e16be42db0998"}}