{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:NSL5HT57HVM6XIV3EZQNVDOX3W","short_pith_number":"pith:NSL5HT57","canonical_record":{"source":{"id":"1007.4925","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-07-28T11:03:25Z","cross_cats_sorted":["nlin.CD","physics.plasm-ph"],"title_canon_sha256":"ec121ad98979e356d5a5191b6e089ff70e0a94a44161d2da92f7bb2f0364f7df","abstract_canon_sha256":"d95be696c06d1e117c53e1957334900698fce99c6260f49a6af880f5e12d598c"},"schema_version":"1.0"},"canonical_sha256":"6c97d3cfbf3d59eba2bb2660da8dd7dd95af179ec5997dbd46d3423dea53ea21","source":{"kind":"arxiv","id":"1007.4925","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.4925","created_at":"2026-05-18T02:06:09Z"},{"alias_kind":"arxiv_version","alias_value":"1007.4925v1","created_at":"2026-05-18T02:06:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.4925","created_at":"2026-05-18T02:06:09Z"},{"alias_kind":"pith_short_12","alias_value":"NSL5HT57HVM6","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NSL5HT57HVM6XIV3","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NSL5HT57","created_at":"2026-05-18T12:26:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:NSL5HT57HVM6XIV3EZQNVDOX3W","target":"record","payload":{"canonical_record":{"source":{"id":"1007.4925","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-07-28T11:03:25Z","cross_cats_sorted":["nlin.CD","physics.plasm-ph"],"title_canon_sha256":"ec121ad98979e356d5a5191b6e089ff70e0a94a44161d2da92f7bb2f0364f7df","abstract_canon_sha256":"d95be696c06d1e117c53e1957334900698fce99c6260f49a6af880f5e12d598c"},"schema_version":"1.0"},"canonical_sha256":"6c97d3cfbf3d59eba2bb2660da8dd7dd95af179ec5997dbd46d3423dea53ea21","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:09.334189Z","signature_b64":"s5cR4wZffZzqCSVQVZwjTNs+xkpJA1sKO4hj9u0mT7AXSDV8iWBclE4vyeu4c/Rf5jqXNXVT11vzDSKCa8KmAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c97d3cfbf3d59eba2bb2660da8dd7dd95af179ec5997dbd46d3423dea53ea21","last_reissued_at":"2026-05-18T02:06:09.333469Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:09.333469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1007.4925","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":"2026-05-18T02:06:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sK7Ve5+IDOOTMRgEOtVnFjzmD3/pFuGPyMuFFuiBsKmZo0d4KFkcwHs7egVcr4V/L/ykdToNToqlBzBImNzwDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:23:34.844453Z"},"content_sha256":"260f0353d887481590dde04775c31181fc3fc5d6e39dbff1b1a1d4c542ebe132","schema_version":"1.0","event_id":"sha256:260f0353d887481590dde04775c31181fc3fc5d6e39dbff1b1a1d4c542ebe132"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:NSL5HT57HVM6XIV3EZQNVDOX3W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Topological Constraints on Magnetic Relaxation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nlin.CD","physics.plasm-ph"],"primary_cat":"astro-ph.SR","authors_text":"A. L. Wilmot-Smith, A. R. Yeates, G. Hornig","submitted_at":"2010-07-28T11:03:25Z","abstract_excerpt":"The final state of turbulent magnetic relaxation in a reversed field pinch is well explained by Taylor's hypothesis. However, recent resistive-magnetohydrodynamic simulations of the relaxation of braided solar coronal loops have led to relaxed fields far from the Taylor state, despite the conservation of helicity. We point out the existence of an additional topological invariant in any flux tube with non-zero field: the topological degree of the field line mapping. We conjecture that this constrains the relaxation, explaining why only one of three example simulations reaches the Taylor state."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.4925","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":"2026-05-18T02:06:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cJBfTYJX7pY/EWv+7udu/Akidc0APKRGiHK5dpHHa6CUrlhu8LCtVbjMfFL9Xca8QqNzwrRBf26k2pS3zCsLBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:23:34.844821Z"},"content_sha256":"9c583b2148f34ee1f3b730d5c32606784580e13e22d81d2ffb634f3bff1d2c0e","schema_version":"1.0","event_id":"sha256:9c583b2148f34ee1f3b730d5c32606784580e13e22d81d2ffb634f3bff1d2c0e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NSL5HT57HVM6XIV3EZQNVDOX3W/bundle.json","state_url":"https://pith.science/pith/NSL5HT57HVM6XIV3EZQNVDOX3W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NSL5HT57HVM6XIV3EZQNVDOX3W/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":"2026-06-03T18:23:34Z","links":{"resolver":"https://pith.science/pith/NSL5HT57HVM6XIV3EZQNVDOX3W","bundle":"https://pith.science/pith/NSL5HT57HVM6XIV3EZQNVDOX3W/bundle.json","state":"https://pith.science/pith/NSL5HT57HVM6XIV3EZQNVDOX3W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NSL5HT57HVM6XIV3EZQNVDOX3W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:NSL5HT57HVM6XIV3EZQNVDOX3W","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":"d95be696c06d1e117c53e1957334900698fce99c6260f49a6af880f5e12d598c","cross_cats_sorted":["nlin.CD","physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-07-28T11:03:25Z","title_canon_sha256":"ec121ad98979e356d5a5191b6e089ff70e0a94a44161d2da92f7bb2f0364f7df"},"schema_version":"1.0","source":{"id":"1007.4925","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.4925","created_at":"2026-05-18T02:06:09Z"},{"alias_kind":"arxiv_version","alias_value":"1007.4925v1","created_at":"2026-05-18T02:06:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.4925","created_at":"2026-05-18T02:06:09Z"},{"alias_kind":"pith_short_12","alias_value":"NSL5HT57HVM6","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NSL5HT57HVM6XIV3","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NSL5HT57","created_at":"2026-05-18T12:26:10Z"}],"graph_snapshots":[{"event_id":"sha256:9c583b2148f34ee1f3b730d5c32606784580e13e22d81d2ffb634f3bff1d2c0e","target":"graph","created_at":"2026-05-18T02:06:09Z","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 final state of turbulent magnetic relaxation in a reversed field pinch is well explained by Taylor's hypothesis. However, recent resistive-magnetohydrodynamic simulations of the relaxation of braided solar coronal loops have led to relaxed fields far from the Taylor state, despite the conservation of helicity. We point out the existence of an additional topological invariant in any flux tube with non-zero field: the topological degree of the field line mapping. We conjecture that this constrains the relaxation, explaining why only one of three example simulations reaches the Taylor state.","authors_text":"A. L. Wilmot-Smith, A. R. Yeates, G. Hornig","cross_cats":["nlin.CD","physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-07-28T11:03:25Z","title":"Topological Constraints on Magnetic Relaxation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.4925","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":"sha256:260f0353d887481590dde04775c31181fc3fc5d6e39dbff1b1a1d4c542ebe132","target":"record","created_at":"2026-05-18T02:06:09Z","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":"d95be696c06d1e117c53e1957334900698fce99c6260f49a6af880f5e12d598c","cross_cats_sorted":["nlin.CD","physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-07-28T11:03:25Z","title_canon_sha256":"ec121ad98979e356d5a5191b6e089ff70e0a94a44161d2da92f7bb2f0364f7df"},"schema_version":"1.0","source":{"id":"1007.4925","kind":"arxiv","version":1}},"canonical_sha256":"6c97d3cfbf3d59eba2bb2660da8dd7dd95af179ec5997dbd46d3423dea53ea21","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c97d3cfbf3d59eba2bb2660da8dd7dd95af179ec5997dbd46d3423dea53ea21","first_computed_at":"2026-05-18T02:06:09.333469Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:06:09.333469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s5cR4wZffZzqCSVQVZwjTNs+xkpJA1sKO4hj9u0mT7AXSDV8iWBclE4vyeu4c/Rf5jqXNXVT11vzDSKCa8KmAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:06:09.334189Z","signed_message":"canonical_sha256_bytes"},"source_id":"1007.4925","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:260f0353d887481590dde04775c31181fc3fc5d6e39dbff1b1a1d4c542ebe132","sha256:9c583b2148f34ee1f3b730d5c32606784580e13e22d81d2ffb634f3bff1d2c0e"],"state_sha256":"0a481520df65714d4a09fbf3fba7e31f63e4ca301bf6d6503a139f489db62b32"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RjiU2HLuE0HHGwD3SdNMh0yZ1v9KBKIym7ttROWGCzPgmGkddNs7vqG/Ijjo5R8E7P4M8AChr6UrYtPGnhEpCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T18:23:34.846702Z","bundle_sha256":"3a27f5c2da4614cb2d5e6446988405d70896110f54182506b18aec144e846bca"}}