{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:Z7Y7VLJA76SPP3MLBGE5G625W7","short_pith_number":"pith:Z7Y7VLJA","canonical_record":{"source":{"id":"2607.06946","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-07-08T03:15:56Z","cross_cats_sorted":[],"title_canon_sha256":"e7da8debf105eb250648e223e624c3473436fb7ea7aebaed2d8991f1a5581080","abstract_canon_sha256":"8ff0eefcba7e082c7f613902444c00c819f375bf1348f2ad620218b22bbd750e"},"schema_version":"1.0"},"canonical_sha256":"cff1faad20ffa4f7ed8b0989d37b5db7c430e2ab85c9107dc3acb91ca38fec15","source":{"kind":"arxiv","id":"2607.06946","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.06946","created_at":"2026-07-09T00:19:40Z"},{"alias_kind":"arxiv_version","alias_value":"2607.06946v1","created_at":"2026-07-09T00:19:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.06946","created_at":"2026-07-09T00:19:40Z"},{"alias_kind":"pith_short_12","alias_value":"Z7Y7VLJA76SP","created_at":"2026-07-09T00:19:40Z"},{"alias_kind":"pith_short_16","alias_value":"Z7Y7VLJA76SPP3ML","created_at":"2026-07-09T00:19:40Z"},{"alias_kind":"pith_short_8","alias_value":"Z7Y7VLJA","created_at":"2026-07-09T00:19:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:Z7Y7VLJA76SPP3MLBGE5G625W7","target":"record","payload":{"canonical_record":{"source":{"id":"2607.06946","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-07-08T03:15:56Z","cross_cats_sorted":[],"title_canon_sha256":"e7da8debf105eb250648e223e624c3473436fb7ea7aebaed2d8991f1a5581080","abstract_canon_sha256":"8ff0eefcba7e082c7f613902444c00c819f375bf1348f2ad620218b22bbd750e"},"schema_version":"1.0"},"canonical_sha256":"cff1faad20ffa4f7ed8b0989d37b5db7c430e2ab85c9107dc3acb91ca38fec15","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-09T00:19:40.860743Z","signature_b64":"+4EPgi8mQ6XA5TlGl9jRjySJANQfVZVm4Z0pdHLbme9NECCYn0oycTmzePeSciqRmshpbM+7TMP9MEolm8spDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cff1faad20ffa4f7ed8b0989d37b5db7c430e2ab85c9107dc3acb91ca38fec15","last_reissued_at":"2026-07-09T00:19:40.860348Z","signature_status":"signed_v1","first_computed_at":"2026-07-09T00:19:40.860348Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.06946","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":"2026-07-09T00:19:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qFKoGVxBzEU3ldbaASZ/5WAx7MQZ8y6Ox6SEjOkYeiSSMXlY+86UU8i0UlMaCbjcVI8RPJ+2VnN8L2MQtZ1vAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T16:04:47.754023Z"},"content_sha256":"0ad7135f538bee0fb50c4bbf7dfeb5d815b437a0ebeab7b0f7d16772b7518ad5","schema_version":"1.0","event_id":"sha256:0ad7135f538bee0fb50c4bbf7dfeb5d815b437a0ebeab7b0f7d16772b7518ad5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:Z7Y7VLJA76SPP3MLBGE5G625W7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultrafast proton radiography of the magnetic fields generated by a laser-driven coil current","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Gennady Fiksel, Hantao Ji, Lan Gao, Michelle Evans, Noel Alfonso, William Fox","submitted_at":"2026-07-08T03:15:56Z","abstract_excerpt":"Magnetic fields generated by a current flowing through a U-shaped coil connecting two copper foils were measured using ultrafast proton radiography. Two $\\sim$1.25 kJ, 1-ns laser pulses propagated through laser entrance holes in the front foil, and were focused to the back foil with an intensity of $\\sim$3 $\\times$ 10$^{16}$ W$/$cm$^{2}$. The intense laser-solid interaction induced a high voltage between the copper foils and generated a large current in the connecting coil. The proton data show $\\sim$40-50 Tesla magnetic fields at the center of the coil $\\sim$3-4 ns after laser irradiation. Th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.06946","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.06946/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-09T00:19:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wtM3cn+/L6c2oImSNH2uzhVhSBLgjjQfdHYNM2kgM0VQbD+gnDqLUpWRPar7lZSz3AHHfSthLVpwvLI1dF/GBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T16:04:47.754950Z"},"content_sha256":"e791a4925954346f4fff4acff40794e636b214f01368a7bb5b3ed9414b821667","schema_version":"1.0","event_id":"sha256:e791a4925954346f4fff4acff40794e636b214f01368a7bb5b3ed9414b821667"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z7Y7VLJA76SPP3MLBGE5G625W7/bundle.json","state_url":"https://pith.science/pith/Z7Y7VLJA76SPP3MLBGE5G625W7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z7Y7VLJA76SPP3MLBGE5G625W7/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":"2026-08-18T16:04:47Z","links":{"resolver":"https://pith.science/pith/Z7Y7VLJA76SPP3MLBGE5G625W7","bundle":"https://pith.science/pith/Z7Y7VLJA76SPP3MLBGE5G625W7/bundle.json","state":"https://pith.science/pith/Z7Y7VLJA76SPP3MLBGE5G625W7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z7Y7VLJA76SPP3MLBGE5G625W7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:Z7Y7VLJA76SPP3MLBGE5G625W7","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":"8ff0eefcba7e082c7f613902444c00c819f375bf1348f2ad620218b22bbd750e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-07-08T03:15:56Z","title_canon_sha256":"e7da8debf105eb250648e223e624c3473436fb7ea7aebaed2d8991f1a5581080"},"schema_version":"1.0","source":{"id":"2607.06946","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.06946","created_at":"2026-07-09T00:19:40Z"},{"alias_kind":"arxiv_version","alias_value":"2607.06946v1","created_at":"2026-07-09T00:19:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.06946","created_at":"2026-07-09T00:19:40Z"},{"alias_kind":"pith_short_12","alias_value":"Z7Y7VLJA76SP","created_at":"2026-07-09T00:19:40Z"},{"alias_kind":"pith_short_16","alias_value":"Z7Y7VLJA76SPP3ML","created_at":"2026-07-09T00:19:40Z"},{"alias_kind":"pith_short_8","alias_value":"Z7Y7VLJA","created_at":"2026-07-09T00:19:40Z"}],"graph_snapshots":[{"event_id":"sha256:e791a4925954346f4fff4acff40794e636b214f01368a7bb5b3ed9414b821667","target":"graph","created_at":"2026-07-09T00:19:40Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.06946/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Magnetic fields generated by a current flowing through a U-shaped coil connecting two copper foils were measured using ultrafast proton radiography. Two $\\sim$1.25 kJ, 1-ns laser pulses propagated through laser entrance holes in the front foil, and were focused to the back foil with an intensity of $\\sim$3 $\\times$ 10$^{16}$ W$/$cm$^{2}$. The intense laser-solid interaction induced a high voltage between the copper foils and generated a large current in the connecting coil. The proton data show $\\sim$40-50 Tesla magnetic fields at the center of the coil $\\sim$3-4 ns after laser irradiation. Th","authors_text":"Gennady Fiksel, Hantao Ji, Lan Gao, Michelle Evans, Noel Alfonso, William Fox","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-07-08T03:15:56Z","title":"Ultrafast proton radiography of the magnetic fields generated by a laser-driven coil current"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.06946","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":"sha256:0ad7135f538bee0fb50c4bbf7dfeb5d815b437a0ebeab7b0f7d16772b7518ad5","target":"record","created_at":"2026-07-09T00:19:40Z","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":"8ff0eefcba7e082c7f613902444c00c819f375bf1348f2ad620218b22bbd750e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-07-08T03:15:56Z","title_canon_sha256":"e7da8debf105eb250648e223e624c3473436fb7ea7aebaed2d8991f1a5581080"},"schema_version":"1.0","source":{"id":"2607.06946","kind":"arxiv","version":1}},"canonical_sha256":"cff1faad20ffa4f7ed8b0989d37b5db7c430e2ab85c9107dc3acb91ca38fec15","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cff1faad20ffa4f7ed8b0989d37b5db7c430e2ab85c9107dc3acb91ca38fec15","first_computed_at":"2026-07-09T00:19:40.860348Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-09T00:19:40.860348Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+4EPgi8mQ6XA5TlGl9jRjySJANQfVZVm4Z0pdHLbme9NECCYn0oycTmzePeSciqRmshpbM+7TMP9MEolm8spDA==","signature_status":"signed_v1","signed_at":"2026-07-09T00:19:40.860743Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.06946","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ad7135f538bee0fb50c4bbf7dfeb5d815b437a0ebeab7b0f7d16772b7518ad5","sha256:e791a4925954346f4fff4acff40794e636b214f01368a7bb5b3ed9414b821667"],"state_sha256":"8be7035bc4501983cde7452defa41ab184094803220d2b918bfc7b417729947c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v5tCB3ABDbvM/HUmkC7k3HotKzHMYkhtPAIzWcKSP2QEVlTofx9OY1LqhvOraWAVW0XJN7GllnUtRuc8SoDlDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T16:04:47.761108Z","bundle_sha256":"9687776a659c9bb26efd410273f539f85eb5ced66b940b218ffbf75768f5e746"}}