{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:3LGIKKURZUUB5JA4MFZN2MFZZH","short_pith_number":"pith:3LGIKKUR","canonical_record":{"source":{"id":"cond-mat/9911073","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"1999-11-05T02:46:18Z","cross_cats_sorted":["q-bio"],"title_canon_sha256":"291bc5e8e2b25aaf5b33599866d21b3ceb56fc1e2d7cbb19d2f89113860a89b9","abstract_canon_sha256":"86b334ccb40a4f532cf9d1b0755dccd68f96a5b3b5a1f67f37a0b3d5dca4f80c"},"schema_version":"1.0"},"canonical_sha256":"dacc852a91cd281ea41c6172dd30b9c9ccae8a722af317f1b89ac35a8cf0d738","source":{"kind":"arxiv","id":"cond-mat/9911073","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9911073","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9911073v1","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9911073","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"pith_short_12","alias_value":"3LGIKKURZUUB","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"3LGIKKURZUUB5JA4","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"3LGIKKUR","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:3LGIKKURZUUB5JA4MFZN2MFZZH","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/9911073","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"1999-11-05T02:46:18Z","cross_cats_sorted":["q-bio"],"title_canon_sha256":"291bc5e8e2b25aaf5b33599866d21b3ceb56fc1e2d7cbb19d2f89113860a89b9","abstract_canon_sha256":"86b334ccb40a4f532cf9d1b0755dccd68f96a5b3b5a1f67f37a0b3d5dca4f80c"},"schema_version":"1.0"},"canonical_sha256":"dacc852a91cd281ea41c6172dd30b9c9ccae8a722af317f1b89ac35a8cf0d738","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:19.731483Z","signature_b64":"a8tlScUBaLktjUrEGfSaaHqX7VCegxrXu/hECXO93wt5kQjhIqCGY60xmNT6JCHP607R2kWUuJNPE7ih/OtyCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dacc852a91cd281ea41c6172dd30b9c9ccae8a722af317f1b89ac35a8cf0d738","last_reissued_at":"2026-05-18T01:09:19.730725Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:19.730725Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/9911073","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":"2026-05-18T01:09:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hVuUUd5hPj200zmn5mUtxteG/BT0cmPMpJN6tWOmm7ql+RSyWEzPebYY9vpWyPQyYtOMsWKg+wEGL30oaBBaDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T16:57:40.925272Z"},"content_sha256":"206a4eccc9613e8c18ee467532af67cedfc19c551e9e0e96fd1aa667d342acda","schema_version":"1.0","event_id":"sha256:206a4eccc9613e8c18ee467532af67cedfc19c551e9e0e96fd1aa667d342acda"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:3LGIKKURZUUB5JA4MFZN2MFZZH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sleep-Wake Differences in Scaling Behavior of the Human Heartbeat: Analysis of Terrestrial and Long-Term Space Flight Data","license":"","headline":"","cross_cats":["q-bio"],"primary_cat":"cond-mat.stat-mech","authors_text":"Armin Bunde, Ary L. Goldberger, H. Eugene Stanley, Janice Fritsch-Yelle, Lu\\'is A. N. Amaral, Plamen Ch. Ivanov, Roman M. Baevsky, Shlomo Havlin","submitted_at":"1999-11-05T02:46:18Z","abstract_excerpt":"We compare scaling properties of the cardiac dynamics during sleep and wake periods for healthy individuals, cosmonauts during orbital flight, and subjects with severe heart disease. For all three groups, we find a greater degree of anticorrelation in the heartbeat fluctuations during sleep compared to wake periods. The sleep-wake difference in the scaling exponents for the three groups is comparable to the difference between healthy and diseased individuals. The observed scaling differences are not accounted for simply by different levels of activity, but appear related to intrinsic changes i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9911073","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":"2026-05-18T01:09:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uUbT6wF21cHF6MmEZB1c4SSAidcFpBR27gTMSnPB7/X/30MJVwxxfHK9YqowzvgJd0+OIfzLfwy0RYByfiTQBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T16:57:40.925642Z"},"content_sha256":"d5e2541eb5c94d54a2ba4a334d5b029c6823deeab7b84b204eea270976f69c3a","schema_version":"1.0","event_id":"sha256:d5e2541eb5c94d54a2ba4a334d5b029c6823deeab7b84b204eea270976f69c3a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3LGIKKURZUUB5JA4MFZN2MFZZH/bundle.json","state_url":"https://pith.science/pith/3LGIKKURZUUB5JA4MFZN2MFZZH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3LGIKKURZUUB5JA4MFZN2MFZZH/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":"2026-05-30T16:57:40Z","links":{"resolver":"https://pith.science/pith/3LGIKKURZUUB5JA4MFZN2MFZZH","bundle":"https://pith.science/pith/3LGIKKURZUUB5JA4MFZN2MFZZH/bundle.json","state":"https://pith.science/pith/3LGIKKURZUUB5JA4MFZN2MFZZH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3LGIKKURZUUB5JA4MFZN2MFZZH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:3LGIKKURZUUB5JA4MFZN2MFZZH","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":"86b334ccb40a4f532cf9d1b0755dccd68f96a5b3b5a1f67f37a0b3d5dca4f80c","cross_cats_sorted":["q-bio"],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"1999-11-05T02:46:18Z","title_canon_sha256":"291bc5e8e2b25aaf5b33599866d21b3ceb56fc1e2d7cbb19d2f89113860a89b9"},"schema_version":"1.0","source":{"id":"cond-mat/9911073","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9911073","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9911073v1","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9911073","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"pith_short_12","alias_value":"3LGIKKURZUUB","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"3LGIKKURZUUB5JA4","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"3LGIKKUR","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:d5e2541eb5c94d54a2ba4a334d5b029c6823deeab7b84b204eea270976f69c3a","target":"graph","created_at":"2026-05-18T01:09:19Z","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":"We compare scaling properties of the cardiac dynamics during sleep and wake periods for healthy individuals, cosmonauts during orbital flight, and subjects with severe heart disease. For all three groups, we find a greater degree of anticorrelation in the heartbeat fluctuations during sleep compared to wake periods. The sleep-wake difference in the scaling exponents for the three groups is comparable to the difference between healthy and diseased individuals. The observed scaling differences are not accounted for simply by different levels of activity, but appear related to intrinsic changes i","authors_text":"Armin Bunde, Ary L. Goldberger, H. Eugene Stanley, Janice Fritsch-Yelle, Lu\\'is A. N. Amaral, Plamen Ch. Ivanov, Roman M. Baevsky, Shlomo Havlin","cross_cats":["q-bio"],"headline":"","license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"1999-11-05T02:46:18Z","title":"Sleep-Wake Differences in Scaling Behavior of the Human Heartbeat: Analysis of Terrestrial and Long-Term Space Flight Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9911073","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":"sha256:206a4eccc9613e8c18ee467532af67cedfc19c551e9e0e96fd1aa667d342acda","target":"record","created_at":"2026-05-18T01:09:19Z","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":"86b334ccb40a4f532cf9d1b0755dccd68f96a5b3b5a1f67f37a0b3d5dca4f80c","cross_cats_sorted":["q-bio"],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"1999-11-05T02:46:18Z","title_canon_sha256":"291bc5e8e2b25aaf5b33599866d21b3ceb56fc1e2d7cbb19d2f89113860a89b9"},"schema_version":"1.0","source":{"id":"cond-mat/9911073","kind":"arxiv","version":1}},"canonical_sha256":"dacc852a91cd281ea41c6172dd30b9c9ccae8a722af317f1b89ac35a8cf0d738","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dacc852a91cd281ea41c6172dd30b9c9ccae8a722af317f1b89ac35a8cf0d738","first_computed_at":"2026-05-18T01:09:19.730725Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:19.730725Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a8tlScUBaLktjUrEGfSaaHqX7VCegxrXu/hECXO93wt5kQjhIqCGY60xmNT6JCHP607R2kWUuJNPE7ih/OtyCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:19.731483Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/9911073","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:206a4eccc9613e8c18ee467532af67cedfc19c551e9e0e96fd1aa667d342acda","sha256:d5e2541eb5c94d54a2ba4a334d5b029c6823deeab7b84b204eea270976f69c3a"],"state_sha256":"d7bd665221ff0ef0133a75967df6097938a893d87e0089db45888025e508db81"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TLD7xdhWnCYf0JLIXRJDxCenfbKH4zT9vaoYwKyqIhr5VyEPFp2cc2VZozHfuj2K8efv5lbeAAGU6S+rgE4XBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T16:57:40.928031Z","bundle_sha256":"e245918f27feb8a05ce6d5dfdd3f5e4b0635d8afe50f44c0e418fed429ca8ddf"}}