{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:SZQZPG3L4J7CIYIUNHC3WSUMOL","short_pith_number":"pith:SZQZPG3L","canonical_record":{"source":{"id":"1811.02956","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2018-11-07T16:08:14Z","cross_cats_sorted":[],"title_canon_sha256":"81a03314ee9b8060071822c8835ea59eef7344c91c91f2f9ba7273780de9fdab","abstract_canon_sha256":"124065d4c3731bfb943f1217fce118887e965247c00bed77f74d0f835a2e31ef"},"schema_version":"1.0"},"canonical_sha256":"9661979b6be27e24611469c5bb4a8c72c98cd95b6a512d3ccf63830aee8eac67","source":{"kind":"arxiv","id":"1811.02956","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.02956","created_at":"2026-05-18T00:00:17Z"},{"alias_kind":"arxiv_version","alias_value":"1811.02956v1","created_at":"2026-05-18T00:00:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.02956","created_at":"2026-05-18T00:00:17Z"},{"alias_kind":"pith_short_12","alias_value":"SZQZPG3L4J7C","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SZQZPG3L4J7CIYIU","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SZQZPG3L","created_at":"2026-05-18T12:32:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:SZQZPG3L4J7CIYIUNHC3WSUMOL","target":"record","payload":{"canonical_record":{"source":{"id":"1811.02956","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2018-11-07T16:08:14Z","cross_cats_sorted":[],"title_canon_sha256":"81a03314ee9b8060071822c8835ea59eef7344c91c91f2f9ba7273780de9fdab","abstract_canon_sha256":"124065d4c3731bfb943f1217fce118887e965247c00bed77f74d0f835a2e31ef"},"schema_version":"1.0"},"canonical_sha256":"9661979b6be27e24611469c5bb4a8c72c98cd95b6a512d3ccf63830aee8eac67","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:17.659427Z","signature_b64":"o3N79OCoB1GuCAS8p9qzUWeUYc+YRNxbi+h098Y+188Zpq8e1TmTpG4VVWAxjiWpE5nvQKZufCqDXQNXip2KDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9661979b6be27e24611469c5bb4a8c72c98cd95b6a512d3ccf63830aee8eac67","last_reissued_at":"2026-05-18T00:00:17.658747Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:17.658747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.02956","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":"2026-05-18T00:00:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0puEw7KSfcpbK8KM7Gh9uebkB7+wvYYx6jpMyht0KUvOzUaMlWd1cCK/5BG68SQNg1jFd1YmVC9vL73uwiZsCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T22:38:01.918050Z"},"content_sha256":"f6180d5b412b32a573a85bcdd4eaaf4f9eb0740d2aa6177be1b14e957e30b07f","schema_version":"1.0","event_id":"sha256:f6180d5b412b32a573a85bcdd4eaaf4f9eb0740d2aa6177be1b14e957e30b07f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:SZQZPG3L4J7CIYIUNHC3WSUMOL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sample entropy of sEMG signals at different stages of rectal cancer treatment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"Jakub Spiechowicz, Jerzy Salowka, Lukasz Machura, Michal Nowakowski, Paulina Trybek","submitted_at":"2018-11-07T16:08:14Z","abstract_excerpt":"Information theory provides a spectrum of nonlinear methods capable of grasping an internal structure of a signal together with an insight into its complex nature. In this work, we discuss the usefulness of the selected entropy techniques for a description of the information carried by the surface electromyography signals during colorectal cancer treatment. The electrical activity of the external anal sphincter can serve as a potential source of knowledge of the actual state of the patient who underwent a common surgery for rectal cancer in the form of anterior or lower anterior resection. The"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02956","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":"2026-05-18T00:00:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JXw1t1+r80nmMW8gbs8EzIjNktG5C30q3e7F0uvLOttAYWbiTD/51opsQ8EuCE38UYglMSgaLnSjwlAYQcMUBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T22:38:01.918408Z"},"content_sha256":"5161ce3252efa2ea616c8c9f90f4b2891ad70c44ea1c54660ffcba722fb8fc79","schema_version":"1.0","event_id":"sha256:5161ce3252efa2ea616c8c9f90f4b2891ad70c44ea1c54660ffcba722fb8fc79"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SZQZPG3L4J7CIYIUNHC3WSUMOL/bundle.json","state_url":"https://pith.science/pith/SZQZPG3L4J7CIYIUNHC3WSUMOL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SZQZPG3L4J7CIYIUNHC3WSUMOL/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":"2026-06-20T22:38:01Z","links":{"resolver":"https://pith.science/pith/SZQZPG3L4J7CIYIUNHC3WSUMOL","bundle":"https://pith.science/pith/SZQZPG3L4J7CIYIUNHC3WSUMOL/bundle.json","state":"https://pith.science/pith/SZQZPG3L4J7CIYIUNHC3WSUMOL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SZQZPG3L4J7CIYIUNHC3WSUMOL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SZQZPG3L4J7CIYIUNHC3WSUMOL","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":"124065d4c3731bfb943f1217fce118887e965247c00bed77f74d0f835a2e31ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2018-11-07T16:08:14Z","title_canon_sha256":"81a03314ee9b8060071822c8835ea59eef7344c91c91f2f9ba7273780de9fdab"},"schema_version":"1.0","source":{"id":"1811.02956","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.02956","created_at":"2026-05-18T00:00:17Z"},{"alias_kind":"arxiv_version","alias_value":"1811.02956v1","created_at":"2026-05-18T00:00:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.02956","created_at":"2026-05-18T00:00:17Z"},{"alias_kind":"pith_short_12","alias_value":"SZQZPG3L4J7C","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SZQZPG3L4J7CIYIU","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SZQZPG3L","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:5161ce3252efa2ea616c8c9f90f4b2891ad70c44ea1c54660ffcba722fb8fc79","target":"graph","created_at":"2026-05-18T00:00:17Z","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":"Information theory provides a spectrum of nonlinear methods capable of grasping an internal structure of a signal together with an insight into its complex nature. In this work, we discuss the usefulness of the selected entropy techniques for a description of the information carried by the surface electromyography signals during colorectal cancer treatment. The electrical activity of the external anal sphincter can serve as a potential source of knowledge of the actual state of the patient who underwent a common surgery for rectal cancer in the form of anterior or lower anterior resection. The","authors_text":"Jakub Spiechowicz, Jerzy Salowka, Lukasz Machura, Michal Nowakowski, Paulina Trybek","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2018-11-07T16:08:14Z","title":"Sample entropy of sEMG signals at different stages of rectal cancer treatment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02956","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:f6180d5b412b32a573a85bcdd4eaaf4f9eb0740d2aa6177be1b14e957e30b07f","target":"record","created_at":"2026-05-18T00:00:17Z","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":"124065d4c3731bfb943f1217fce118887e965247c00bed77f74d0f835a2e31ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2018-11-07T16:08:14Z","title_canon_sha256":"81a03314ee9b8060071822c8835ea59eef7344c91c91f2f9ba7273780de9fdab"},"schema_version":"1.0","source":{"id":"1811.02956","kind":"arxiv","version":1}},"canonical_sha256":"9661979b6be27e24611469c5bb4a8c72c98cd95b6a512d3ccf63830aee8eac67","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9661979b6be27e24611469c5bb4a8c72c98cd95b6a512d3ccf63830aee8eac67","first_computed_at":"2026-05-18T00:00:17.658747Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:17.658747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o3N79OCoB1GuCAS8p9qzUWeUYc+YRNxbi+h098Y+188Zpq8e1TmTpG4VVWAxjiWpE5nvQKZufCqDXQNXip2KDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:17.659427Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.02956","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6180d5b412b32a573a85bcdd4eaaf4f9eb0740d2aa6177be1b14e957e30b07f","sha256:5161ce3252efa2ea616c8c9f90f4b2891ad70c44ea1c54660ffcba722fb8fc79"],"state_sha256":"e6cf3fbee41ef5dca34874a1dd9095e6ba7b9d25361683f1631895858ea914ae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iRzodHRY5L1ZPdAGAeK291DZcp+n4mMXldnFGRzspfw/Wm1OXsoN5t5E4mRu5NpJxsUrjALZs6HYGj6HHwmlCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T22:38:01.920281Z","bundle_sha256":"fb2ae825c9ba411c98db7e4be69f9bf79ffec199c94efebdc8c96629e7bf3204"}}