{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:SSOA4ECOWFGSSVHCE6INMKFT2H","short_pith_number":"pith:SSOA4ECO","canonical_record":{"source":{"id":"2006.10348","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-18T08:14:20Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"904751ee276877d70004a523bf46c169e5f57e79b7b44e2f736f3b14939f0443","abstract_canon_sha256":"ffc9366259464d5c4bccb6306666c712bbd9eb3b25404214b903d7cebc71a7e8"},"schema_version":"1.0"},"canonical_sha256":"949c0e104eb14d2954e22790d628b3d1cca6344c8ec69567ca52efb574610ae9","source":{"kind":"arxiv","id":"2006.10348","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.10348","created_at":"2026-07-05T03:46:55Z"},{"alias_kind":"arxiv_version","alias_value":"2006.10348v2","created_at":"2026-07-05T03:46:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.10348","created_at":"2026-07-05T03:46:55Z"},{"alias_kind":"pith_short_12","alias_value":"SSOA4ECOWFGS","created_at":"2026-07-05T03:46:55Z"},{"alias_kind":"pith_short_16","alias_value":"SSOA4ECOWFGSSVHC","created_at":"2026-07-05T03:46:55Z"},{"alias_kind":"pith_short_8","alias_value":"SSOA4ECO","created_at":"2026-07-05T03:46:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:SSOA4ECOWFGSSVHCE6INMKFT2H","target":"record","payload":{"canonical_record":{"source":{"id":"2006.10348","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-18T08:14:20Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"904751ee276877d70004a523bf46c169e5f57e79b7b44e2f736f3b14939f0443","abstract_canon_sha256":"ffc9366259464d5c4bccb6306666c712bbd9eb3b25404214b903d7cebc71a7e8"},"schema_version":"1.0"},"canonical_sha256":"949c0e104eb14d2954e22790d628b3d1cca6344c8ec69567ca52efb574610ae9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:46:55.697481Z","signature_b64":"vmGLguNOgwV4jWhwEtyBhgGygIHd7GV9YZlcP77yFDEcgjR/SV4K5RJktcLuPRn66zdDroSWmzUfJf6yq9QzBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"949c0e104eb14d2954e22790d628b3d1cca6344c8ec69567ca52efb574610ae9","last_reissued_at":"2026-07-05T03:46:55.697037Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:46:55.697037Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.10348","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:46:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V7yUh4RZiVvy6HyIkJ+pXllNWZcVhDbB9EDXCSGmxJZnA3X/CjsNivKTw1JrgO/G+mk19g47naSB2jRtw83aBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T03:59:40.047675Z"},"content_sha256":"b4d5d87e0c3f8017c1ae21fc8b1044d578d8232f04d00817e7ac83e82e645bec","schema_version":"1.0","event_id":"sha256:b4d5d87e0c3f8017c1ae21fc8b1044d578d8232f04d00817e7ac83e82e645bec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:SSOA4ECOWFGSSVHCE6INMKFT2H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radio interferometry applied to the observation of cosmic-ray induced extensive air showers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.HE","authors_text":"Harm Schoorlemmer, Washington R. Carvalho Jr","submitted_at":"2020-06-18T08:14:20Z","abstract_excerpt":"We developed a radio interferometric technique for the observation of extensive air showers initiated by cosmic particles. In this proof-of-principle study we show that properties of extensive air showers can be derived with high accuracy in a straightforward manner. When time synchronisation below $\\sim$1 ns between different receivers can be achieved, direction reconstruction resolution of $< 0.2^\\circ$ and resolution on the depth of shower maximum of $<10$ g/cm$^2$ are obtained over the full parameter range studied, with even higher accuracy for inclined incoming directions. In addition, by"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.10348","kind":"arxiv","version":2},"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/2006.10348/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":"2026-07-05T03:46:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uD6BezJoMbU4TAc0vX2Qwb0fXJsEW0bEN6acYL9r7k2HNHdvzKWxe/kX3ZT1vqynnlvBBqvYDYX5fymcAMO8CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T03:59:40.048517Z"},"content_sha256":"06de8f57a7e6baa6a588d9c84e582620a7425076cf7d3ede797e8392c2c9ac41","schema_version":"1.0","event_id":"sha256:06de8f57a7e6baa6a588d9c84e582620a7425076cf7d3ede797e8392c2c9ac41"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SSOA4ECOWFGSSVHCE6INMKFT2H/bundle.json","state_url":"https://pith.science/pith/SSOA4ECOWFGSSVHCE6INMKFT2H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SSOA4ECOWFGSSVHCE6INMKFT2H/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":"2026-08-20T03:59:40Z","links":{"resolver":"https://pith.science/pith/SSOA4ECOWFGSSVHCE6INMKFT2H","bundle":"https://pith.science/pith/SSOA4ECOWFGSSVHCE6INMKFT2H/bundle.json","state":"https://pith.science/pith/SSOA4ECOWFGSSVHCE6INMKFT2H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SSOA4ECOWFGSSVHCE6INMKFT2H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:SSOA4ECOWFGSSVHCE6INMKFT2H","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":"ffc9366259464d5c4bccb6306666c712bbd9eb3b25404214b903d7cebc71a7e8","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-18T08:14:20Z","title_canon_sha256":"904751ee276877d70004a523bf46c169e5f57e79b7b44e2f736f3b14939f0443"},"schema_version":"1.0","source":{"id":"2006.10348","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.10348","created_at":"2026-07-05T03:46:55Z"},{"alias_kind":"arxiv_version","alias_value":"2006.10348v2","created_at":"2026-07-05T03:46:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.10348","created_at":"2026-07-05T03:46:55Z"},{"alias_kind":"pith_short_12","alias_value":"SSOA4ECOWFGS","created_at":"2026-07-05T03:46:55Z"},{"alias_kind":"pith_short_16","alias_value":"SSOA4ECOWFGSSVHC","created_at":"2026-07-05T03:46:55Z"},{"alias_kind":"pith_short_8","alias_value":"SSOA4ECO","created_at":"2026-07-05T03:46:55Z"}],"graph_snapshots":[{"event_id":"sha256:06de8f57a7e6baa6a588d9c84e582620a7425076cf7d3ede797e8392c2c9ac41","target":"graph","created_at":"2026-07-05T03:46:55Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2006.10348/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We developed a radio interferometric technique for the observation of extensive air showers initiated by cosmic particles. In this proof-of-principle study we show that properties of extensive air showers can be derived with high accuracy in a straightforward manner. When time synchronisation below $\\sim$1 ns between different receivers can be achieved, direction reconstruction resolution of $< 0.2^\\circ$ and resolution on the depth of shower maximum of $<10$ g/cm$^2$ are obtained over the full parameter range studied, with even higher accuracy for inclined incoming directions. In addition, by","authors_text":"Harm Schoorlemmer, Washington R. Carvalho Jr","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-18T08:14:20Z","title":"Radio interferometry applied to the observation of cosmic-ray induced extensive air showers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.10348","kind":"arxiv","version":2},"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:b4d5d87e0c3f8017c1ae21fc8b1044d578d8232f04d00817e7ac83e82e645bec","target":"record","created_at":"2026-07-05T03:46:55Z","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":"ffc9366259464d5c4bccb6306666c712bbd9eb3b25404214b903d7cebc71a7e8","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-18T08:14:20Z","title_canon_sha256":"904751ee276877d70004a523bf46c169e5f57e79b7b44e2f736f3b14939f0443"},"schema_version":"1.0","source":{"id":"2006.10348","kind":"arxiv","version":2}},"canonical_sha256":"949c0e104eb14d2954e22790d628b3d1cca6344c8ec69567ca52efb574610ae9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"949c0e104eb14d2954e22790d628b3d1cca6344c8ec69567ca52efb574610ae9","first_computed_at":"2026-07-05T03:46:55.697037Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:46:55.697037Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vmGLguNOgwV4jWhwEtyBhgGygIHd7GV9YZlcP77yFDEcgjR/SV4K5RJktcLuPRn66zdDroSWmzUfJf6yq9QzBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:46:55.697481Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.10348","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b4d5d87e0c3f8017c1ae21fc8b1044d578d8232f04d00817e7ac83e82e645bec","sha256:06de8f57a7e6baa6a588d9c84e582620a7425076cf7d3ede797e8392c2c9ac41"],"state_sha256":"14caec088ff3a694b5a27a192774522b788cd102ee644b76bd49f6887114bc8e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VOhiswACvToZTH47P4IBcjR77B6LUbwRo41xjPmD07Sfce8kOI2Kc9LxbyOUxh2pTPU2+aKfeokopt9PD3q8Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T03:59:40.053464Z","bundle_sha256":"dffa5a20b59f019f33361a0cd09112bae9472743c268c6f4e39f9e86dd6e0b5a"}}