{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:HF7G72WQVV6PV3H74S7IHIS6IM","short_pith_number":"pith:HF7G72WQ","canonical_record":{"source":{"id":"1203.3971","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-03-18T16:48:07Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"380780300a8d68d97dcb2774e64ea6774c9e56a51cc15d764c3e78984cf4e6fd","abstract_canon_sha256":"f2bd89227b0b965bdcd8785e53711fc9ea60e00874cd709ac60be520ac6bb752"},"schema_version":"1.0"},"canonical_sha256":"397e6fead0ad7cfaecffe4be83a25e4320927039c953a6b92b4f53986e603282","source":{"kind":"arxiv","id":"1203.3971","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.3971","created_at":"2026-05-18T03:55:55Z"},{"alias_kind":"arxiv_version","alias_value":"1203.3971v1","created_at":"2026-05-18T03:55:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.3971","created_at":"2026-05-18T03:55:55Z"},{"alias_kind":"pith_short_12","alias_value":"HF7G72WQVV6P","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HF7G72WQVV6PV3H7","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HF7G72WQ","created_at":"2026-05-18T12:27:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:HF7G72WQVV6PV3H74S7IHIS6IM","target":"record","payload":{"canonical_record":{"source":{"id":"1203.3971","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-03-18T16:48:07Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"380780300a8d68d97dcb2774e64ea6774c9e56a51cc15d764c3e78984cf4e6fd","abstract_canon_sha256":"f2bd89227b0b965bdcd8785e53711fc9ea60e00874cd709ac60be520ac6bb752"},"schema_version":"1.0"},"canonical_sha256":"397e6fead0ad7cfaecffe4be83a25e4320927039c953a6b92b4f53986e603282","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:55:55.804167Z","signature_b64":"pk2qIRMzm+aTz43i8MlQcc/NLBNkG36zbdNgfEOEUrLLm9P9bf5L8kZlblhymqMbOz/vvN3turShB+bjsJkwBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"397e6fead0ad7cfaecffe4be83a25e4320927039c953a6b92b4f53986e603282","last_reissued_at":"2026-05-18T03:55:55.803547Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:55:55.803547Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.3971","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":"2026-05-18T03:55:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HLahxY8n6+hvSkvftHmBW/HkrqVSASuirQmI+WszMRrx2y3NixU4MyWyTDTkR5HGtoLdIy0peUF2XLKdxGnbDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T05:27:58.263763Z"},"content_sha256":"3f836b8edcef1eaddcd57a1a149234e77e79e39f5444c081bf12c79198d56a16","schema_version":"1.0","event_id":"sha256:3f836b8edcef1eaddcd57a1a149234e77e79e39f5444c081bf12c79198d56a16"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:HF7G72WQVV6PV3H74S7IHIS6IM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Experimental evidence for the sensitivity of the air-shower radio signal to the longitudinal shower development","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"A. Chiavassa, A. Haungs, A. Horneffer, A. Saftoiu, A. Schmidt, A. Weindl, B. Fuchs, C. Grupen, C. Morello, C. R\\\"uhle, D. Fuhrmann, D. Heck, D. Huber, D. Kang, E. Cantoni, F. Di Pierro, F.G. Schr\\\"oder, G.C. Trinchero, G. Toma, H. Bozdog, H. Falcke, H. Gemmeke, H.J. Mathes, H. Rebel, H. Schieler, I.M. Brancus, J.A. Zensus (LOPES Collaboration), J. Bl\\\"umer, J.C. Arteaga, J. Kuijpers, J. Oehlschl\\\"ager, J. Rautenberg, J.R. H\\\"orandel, J. Wochele, J. Zabierowski, K. Bekk, K. Daumiller, K.-H. Kampert, K. Link, L. B\\\"ahren, M. Bertaina, M. Finger, M. Ludwig, M. Melissas, M. Roth, M. Wommer, N. Palmieri, O. Kr\\\"omer, O. Sima, P. Buchholz, P. Doll, P.G. Isar, P.L. Biermann, P. Luczak, R. Engel, T. Huege, T. Pierog, V. de Souza, W.D. Apel","submitted_at":"2012-03-18T16:48:07Z","abstract_excerpt":"We observe a correlation between the slope of radio lateral distributions, and the mean muon pseudorapidity of 59 individual cosmic-ray-air-shower events. The radio lateral distributions are measured with LOPES, a digital radio interferometer co-located with the multi-detector-air-shower array KASCADE-Grande, which includes a muon-tracking detector. The result proves experimentally that radio measurements are sensitive to the longitudinal development of cosmic-ray air-showers. This is one of the main prerequisites for using radio arrays for ultra-high-energy particle physics and astrophysics."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.3971","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":"2026-05-18T03:55:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FTUtClueVIGhJhSFxiNanlT8mU/IhSiT+Xt1X0qPx7O2dCExQ0NqQxM2o/dpvvjmTwOwC3lokr1eUdES8C6HBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T05:27:58.264490Z"},"content_sha256":"ab7dc61ccae219531a91829968cd4070998c7377c841b083b14a6fa67112340e","schema_version":"1.0","event_id":"sha256:ab7dc61ccae219531a91829968cd4070998c7377c841b083b14a6fa67112340e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HF7G72WQVV6PV3H74S7IHIS6IM/bundle.json","state_url":"https://pith.science/pith/HF7G72WQVV6PV3H74S7IHIS6IM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HF7G72WQVV6PV3H74S7IHIS6IM/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":"2026-06-10T05:27:58Z","links":{"resolver":"https://pith.science/pith/HF7G72WQVV6PV3H74S7IHIS6IM","bundle":"https://pith.science/pith/HF7G72WQVV6PV3H74S7IHIS6IM/bundle.json","state":"https://pith.science/pith/HF7G72WQVV6PV3H74S7IHIS6IM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HF7G72WQVV6PV3H74S7IHIS6IM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:HF7G72WQVV6PV3H74S7IHIS6IM","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":"f2bd89227b0b965bdcd8785e53711fc9ea60e00874cd709ac60be520ac6bb752","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-03-18T16:48:07Z","title_canon_sha256":"380780300a8d68d97dcb2774e64ea6774c9e56a51cc15d764c3e78984cf4e6fd"},"schema_version":"1.0","source":{"id":"1203.3971","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.3971","created_at":"2026-05-18T03:55:55Z"},{"alias_kind":"arxiv_version","alias_value":"1203.3971v1","created_at":"2026-05-18T03:55:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.3971","created_at":"2026-05-18T03:55:55Z"},{"alias_kind":"pith_short_12","alias_value":"HF7G72WQVV6P","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HF7G72WQVV6PV3H7","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HF7G72WQ","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:ab7dc61ccae219531a91829968cd4070998c7377c841b083b14a6fa67112340e","target":"graph","created_at":"2026-05-18T03:55:55Z","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 observe a correlation between the slope of radio lateral distributions, and the mean muon pseudorapidity of 59 individual cosmic-ray-air-shower events. The radio lateral distributions are measured with LOPES, a digital radio interferometer co-located with the multi-detector-air-shower array KASCADE-Grande, which includes a muon-tracking detector. The result proves experimentally that radio measurements are sensitive to the longitudinal development of cosmic-ray air-showers. This is one of the main prerequisites for using radio arrays for ultra-high-energy particle physics and astrophysics.","authors_text":"A. Chiavassa, A. Haungs, A. Horneffer, A. Saftoiu, A. Schmidt, A. Weindl, B. Fuchs, C. Grupen, C. Morello, C. R\\\"uhle, D. Fuhrmann, D. Heck, D. Huber, D. Kang, E. Cantoni, F. Di Pierro, F.G. Schr\\\"oder, G.C. Trinchero, G. Toma, H. Bozdog, H. Falcke, H. Gemmeke, H.J. Mathes, H. Rebel, H. Schieler, I.M. Brancus, J.A. Zensus (LOPES Collaboration), J. Bl\\\"umer, J.C. Arteaga, J. Kuijpers, J. Oehlschl\\\"ager, J. Rautenberg, J.R. H\\\"orandel, J. Wochele, J. Zabierowski, K. Bekk, K. Daumiller, K.-H. Kampert, K. Link, L. B\\\"ahren, M. Bertaina, M. Finger, M. Ludwig, M. Melissas, M. Roth, M. Wommer, N. Palmieri, O. Kr\\\"omer, O. Sima, P. Buchholz, P. Doll, P.G. Isar, P.L. Biermann, P. Luczak, R. Engel, T. Huege, T. Pierog, V. de Souza, W.D. Apel","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-03-18T16:48:07Z","title":"Experimental evidence for the sensitivity of the air-shower radio signal to the longitudinal shower development"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.3971","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":"sha256:3f836b8edcef1eaddcd57a1a149234e77e79e39f5444c081bf12c79198d56a16","target":"record","created_at":"2026-05-18T03:55:55Z","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":"f2bd89227b0b965bdcd8785e53711fc9ea60e00874cd709ac60be520ac6bb752","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-03-18T16:48:07Z","title_canon_sha256":"380780300a8d68d97dcb2774e64ea6774c9e56a51cc15d764c3e78984cf4e6fd"},"schema_version":"1.0","source":{"id":"1203.3971","kind":"arxiv","version":1}},"canonical_sha256":"397e6fead0ad7cfaecffe4be83a25e4320927039c953a6b92b4f53986e603282","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"397e6fead0ad7cfaecffe4be83a25e4320927039c953a6b92b4f53986e603282","first_computed_at":"2026-05-18T03:55:55.803547Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:55:55.803547Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pk2qIRMzm+aTz43i8MlQcc/NLBNkG36zbdNgfEOEUrLLm9P9bf5L8kZlblhymqMbOz/vvN3turShB+bjsJkwBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:55:55.804167Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.3971","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3f836b8edcef1eaddcd57a1a149234e77e79e39f5444c081bf12c79198d56a16","sha256:ab7dc61ccae219531a91829968cd4070998c7377c841b083b14a6fa67112340e"],"state_sha256":"fce39bc3e2540e599eb1e98f7177c39a1965137b121917ffb1e9abdb95af9e91"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1rF2wAlK2anc3YyYvpys1igMIg4DDywZ/ghqDdzlgH/WJuwrBE62Weuqku8IPtgz2s/4Lf6IgPiNauw0vFTlCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T05:27:58.269198Z","bundle_sha256":"77251794d07b1456b443207cd67a474ed7ca20c7ca6255c2f51133fbaa01262a"}}