{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:SJRDRFTINZ2C7C6FZZGXZHDEUS","short_pith_number":"pith:SJRDRFTI","canonical_record":{"source":{"id":"1509.08163","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-09-28T00:00:49Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"d712c4fd13f3a296bc37d78f02988f8940b874f23473bd396ad536ee7ebe6739","abstract_canon_sha256":"82f188b8cd0e338b565c1f0ce43a2aaac8c45bd29502ee376f87bd5c41ae2229"},"schema_version":"1.0"},"canonical_sha256":"92623896686e742f8bc5ce4d7c9c64a4ac86b1bd2978fca5d1a526e6c4fce446","source":{"kind":"arxiv","id":"1509.08163","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.08163","created_at":"2026-05-18T01:20:18Z"},{"alias_kind":"arxiv_version","alias_value":"1509.08163v3","created_at":"2026-05-18T01:20:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.08163","created_at":"2026-05-18T01:20:18Z"},{"alias_kind":"pith_short_12","alias_value":"SJRDRFTINZ2C","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SJRDRFTINZ2C7C6F","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SJRDRFTI","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:SJRDRFTINZ2C7C6FZZGXZHDEUS","target":"record","payload":{"canonical_record":{"source":{"id":"1509.08163","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-09-28T00:00:49Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"d712c4fd13f3a296bc37d78f02988f8940b874f23473bd396ad536ee7ebe6739","abstract_canon_sha256":"82f188b8cd0e338b565c1f0ce43a2aaac8c45bd29502ee376f87bd5c41ae2229"},"schema_version":"1.0"},"canonical_sha256":"92623896686e742f8bc5ce4d7c9c64a4ac86b1bd2978fca5d1a526e6c4fce446","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:20:18.952155Z","signature_b64":"klHIA1YBJ3Vvj5WSEPNf5QWLJbjQmovK+ZUH8SsxAQesljsleN5xgbM1ytvJQ32vxPvnSUqUm+DeZsEkYsSUAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"92623896686e742f8bc5ce4d7c9c64a4ac86b1bd2978fca5d1a526e6c4fce446","last_reissued_at":"2026-05-18T01:20:18.951509Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:20:18.951509Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.08163","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:20:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rEo+sUJsMithLNoQESusF99vMwEyvbZ8aExv7FUyOKQU7HNCWOscXmSVgrLf+aTEcrJsM6s91eHOnfjzv8dKBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T05:04:10.858630Z"},"content_sha256":"3d1f41468c7d4d8fea3d7814de95362f27aa9930fe763b5f791ad2f5ea607475","schema_version":"1.0","event_id":"sha256:3d1f41468c7d4d8fea3d7814de95362f27aa9930fe763b5f791ad2f5ea607475"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:SJRDRFTINZ2C7C6FZZGXZHDEUS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Formation of current singularity in a topologically constrained plasma","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"physics.plasm-ph","authors_text":"A. Bhattacharjee, Hong Qin, Yao Zhou, Yi-Min Huang","submitted_at":"2015-09-28T00:00:49Z","abstract_excerpt":"Recently a variational integrator for ideal magnetohydrodynamics in Lagrangian labeling has been developed. Its built-in frozen-in equation makes it optimal for studying current sheet formation. We use this scheme to study the Hahm-Kulsrud-Taylor problem, which considers the response of a 2D plasma magnetized by a sheared field under sinusoidal boundary forcing. We obtain an equilibrium solution that preserves the magnetic topology of the initial field exactly, with a fluid mapping that is non-differentiable. Unlike previous studies that examine the current density output, we identify a singul"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.08163","kind":"arxiv","version":3},"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":"2026-05-18T01:20:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mvMa7xkmTzT1HG6kTs9NEo0Xj7h1noMV6rMC5eO9mx+gfBuV9oQ3UbQ2T2a2N3XwUoMAOxCaXrgKTnIF+4CKBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T05:04:10.858979Z"},"content_sha256":"a0d2890ec69f5cd95edd90a2c7b7672bed8aa58364eba2c2951df9b72133562a","schema_version":"1.0","event_id":"sha256:a0d2890ec69f5cd95edd90a2c7b7672bed8aa58364eba2c2951df9b72133562a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SJRDRFTINZ2C7C6FZZGXZHDEUS/bundle.json","state_url":"https://pith.science/pith/SJRDRFTINZ2C7C6FZZGXZHDEUS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SJRDRFTINZ2C7C6FZZGXZHDEUS/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":"2026-06-02T05:04:10Z","links":{"resolver":"https://pith.science/pith/SJRDRFTINZ2C7C6FZZGXZHDEUS","bundle":"https://pith.science/pith/SJRDRFTINZ2C7C6FZZGXZHDEUS/bundle.json","state":"https://pith.science/pith/SJRDRFTINZ2C7C6FZZGXZHDEUS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SJRDRFTINZ2C7C6FZZGXZHDEUS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:SJRDRFTINZ2C7C6FZZGXZHDEUS","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":"82f188b8cd0e338b565c1f0ce43a2aaac8c45bd29502ee376f87bd5c41ae2229","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-09-28T00:00:49Z","title_canon_sha256":"d712c4fd13f3a296bc37d78f02988f8940b874f23473bd396ad536ee7ebe6739"},"schema_version":"1.0","source":{"id":"1509.08163","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.08163","created_at":"2026-05-18T01:20:18Z"},{"alias_kind":"arxiv_version","alias_value":"1509.08163v3","created_at":"2026-05-18T01:20:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.08163","created_at":"2026-05-18T01:20:18Z"},{"alias_kind":"pith_short_12","alias_value":"SJRDRFTINZ2C","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SJRDRFTINZ2C7C6F","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SJRDRFTI","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:a0d2890ec69f5cd95edd90a2c7b7672bed8aa58364eba2c2951df9b72133562a","target":"graph","created_at":"2026-05-18T01:20:18Z","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":"Recently a variational integrator for ideal magnetohydrodynamics in Lagrangian labeling has been developed. Its built-in frozen-in equation makes it optimal for studying current sheet formation. We use this scheme to study the Hahm-Kulsrud-Taylor problem, which considers the response of a 2D plasma magnetized by a sheared field under sinusoidal boundary forcing. We obtain an equilibrium solution that preserves the magnetic topology of the initial field exactly, with a fluid mapping that is non-differentiable. Unlike previous studies that examine the current density output, we identify a singul","authors_text":"A. Bhattacharjee, Hong Qin, Yao Zhou, Yi-Min Huang","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-09-28T00:00:49Z","title":"Formation of current singularity in a topologically constrained plasma"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.08163","kind":"arxiv","version":3},"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":"sha256:3d1f41468c7d4d8fea3d7814de95362f27aa9930fe763b5f791ad2f5ea607475","target":"record","created_at":"2026-05-18T01:20:18Z","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":"82f188b8cd0e338b565c1f0ce43a2aaac8c45bd29502ee376f87bd5c41ae2229","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-09-28T00:00:49Z","title_canon_sha256":"d712c4fd13f3a296bc37d78f02988f8940b874f23473bd396ad536ee7ebe6739"},"schema_version":"1.0","source":{"id":"1509.08163","kind":"arxiv","version":3}},"canonical_sha256":"92623896686e742f8bc5ce4d7c9c64a4ac86b1bd2978fca5d1a526e6c4fce446","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"92623896686e742f8bc5ce4d7c9c64a4ac86b1bd2978fca5d1a526e6c4fce446","first_computed_at":"2026-05-18T01:20:18.951509Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:18.951509Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"klHIA1YBJ3Vvj5WSEPNf5QWLJbjQmovK+ZUH8SsxAQesljsleN5xgbM1ytvJQ32vxPvnSUqUm+DeZsEkYsSUAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:18.952155Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.08163","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3d1f41468c7d4d8fea3d7814de95362f27aa9930fe763b5f791ad2f5ea607475","sha256:a0d2890ec69f5cd95edd90a2c7b7672bed8aa58364eba2c2951df9b72133562a"],"state_sha256":"aebd64b62f72adaff3499c73639562900f46bfd5266198f372a5c555b19aed16"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z/5i0W++3k+X61mNSRTLKUqWqjHzlqRY4QvGJhwLNj/B6W3240KRAf+vS2DPzn2+HQHhERqOr13VuOpKSYA2DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T05:04:10.860975Z","bundle_sha256":"46710fc2ee4d43031620520bf5acda476a8b0655ab1719813af0377cd4c69647"}}