{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:UHQ6H54YVVU6R4WIQBLTCUJKS3","short_pith_number":"pith:UHQ6H54Y","canonical_record":{"source":{"id":"1011.3902","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-11-17T07:40:15Z","cross_cats_sorted":[],"title_canon_sha256":"3a789dcbcfe0e7f639f6442ec5d50345da5441d4e28edb3a8cd407998e39b61c","abstract_canon_sha256":"2ab7a7b116315a17e6e57d1f05a6deddb3b85b9f5f18d19075c9d33b0007baeb"},"schema_version":"1.0"},"canonical_sha256":"a1e1e3f798ad69e8f2c8805731512a96fbc9e990ed97c58c2c44c1f800f9cc5e","source":{"kind":"arxiv","id":"1011.3902","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.3902","created_at":"2026-05-18T04:32:35Z"},{"alias_kind":"arxiv_version","alias_value":"1011.3902v2","created_at":"2026-05-18T04:32:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.3902","created_at":"2026-05-18T04:32:35Z"},{"alias_kind":"pith_short_12","alias_value":"UHQ6H54YVVU6","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"UHQ6H54YVVU6R4WI","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"UHQ6H54Y","created_at":"2026-05-18T12:26:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:UHQ6H54YVVU6R4WIQBLTCUJKS3","target":"record","payload":{"canonical_record":{"source":{"id":"1011.3902","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-11-17T07:40:15Z","cross_cats_sorted":[],"title_canon_sha256":"3a789dcbcfe0e7f639f6442ec5d50345da5441d4e28edb3a8cd407998e39b61c","abstract_canon_sha256":"2ab7a7b116315a17e6e57d1f05a6deddb3b85b9f5f18d19075c9d33b0007baeb"},"schema_version":"1.0"},"canonical_sha256":"a1e1e3f798ad69e8f2c8805731512a96fbc9e990ed97c58c2c44c1f800f9cc5e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:32:35.882849Z","signature_b64":"r3puPyax9zJeNy+dPzEXj1UdwjE/Q9DcT2P6vzX/7TnoWP/lY4NCsHLw6dt4Ifi2ZkoVzjzxzZjPi3pD3xT6CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a1e1e3f798ad69e8f2c8805731512a96fbc9e990ed97c58c2c44c1f800f9cc5e","last_reissued_at":"2026-05-18T04:32:35.882467Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:32:35.882467Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1011.3902","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":"2026-05-18T04:32:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AUPMv4Nq0ZQe1kclzFp5VB7E+lpThNkQ4cGXuJ0mLXSmPdQLfrH3neqtsIAK/9gtD3sg33XqMff+TdyxnIqWAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T10:56:02.459771Z"},"content_sha256":"237686f7a249fc69ad98a2c6af72d7ebde211563d8609c93dae07bce1e4f0615","schema_version":"1.0","event_id":"sha256:237686f7a249fc69ad98a2c6af72d7ebde211563d8609c93dae07bce1e4f0615"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:UHQ6H54YVVU6R4WIQBLTCUJKS3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhancement of the Yakutsk array by atmospheric Cherenkov telescopes to study cosmic rays above $10^{15}$ eV","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A.A. Ivanov, I.Ye. Sleptsov, M.I. Pravdin, S.P. Knurenko, Z.E. Petrov","submitted_at":"2010-11-17T07:40:15Z","abstract_excerpt":"The aim of the Yakutsk array enhancement project is to create an instrument to study the highest-energy galactic cosmic rays (CRs) -- their sources, energy spectrum, and mass composition. Additionally, there will be unique capabilities for investigations in the transition region between galactic and extragalactic components of CRs. Using the well-developed imaging atmospheric Cherenkov telescope technique adapted to the energy region $E>10^{15}$ eV, we plan to measure the longitudinal structure parameters of the shower, e.g., angular and temporal distributions of the Cherenkov signal related t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.3902","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":""},"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":"2026-05-18T04:32:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E+FqtthovrAVcBiWPC4a80UGbPw0204Gu6c+y1M0a/wgMJI9dUCjaR8zuF7xs7Y1sa0lQN1M0AJK7i4ERjveDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T10:56:02.460123Z"},"content_sha256":"33a904fd94b3a4ae230d6f6f67f5f43c39ee7abda9d222507d34055198ccdd84","schema_version":"1.0","event_id":"sha256:33a904fd94b3a4ae230d6f6f67f5f43c39ee7abda9d222507d34055198ccdd84"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UHQ6H54YVVU6R4WIQBLTCUJKS3/bundle.json","state_url":"https://pith.science/pith/UHQ6H54YVVU6R4WIQBLTCUJKS3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UHQ6H54YVVU6R4WIQBLTCUJKS3/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":"2026-06-09T10:56:02Z","links":{"resolver":"https://pith.science/pith/UHQ6H54YVVU6R4WIQBLTCUJKS3","bundle":"https://pith.science/pith/UHQ6H54YVVU6R4WIQBLTCUJKS3/bundle.json","state":"https://pith.science/pith/UHQ6H54YVVU6R4WIQBLTCUJKS3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UHQ6H54YVVU6R4WIQBLTCUJKS3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:UHQ6H54YVVU6R4WIQBLTCUJKS3","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":"2ab7a7b116315a17e6e57d1f05a6deddb3b85b9f5f18d19075c9d33b0007baeb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-11-17T07:40:15Z","title_canon_sha256":"3a789dcbcfe0e7f639f6442ec5d50345da5441d4e28edb3a8cd407998e39b61c"},"schema_version":"1.0","source":{"id":"1011.3902","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.3902","created_at":"2026-05-18T04:32:35Z"},{"alias_kind":"arxiv_version","alias_value":"1011.3902v2","created_at":"2026-05-18T04:32:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.3902","created_at":"2026-05-18T04:32:35Z"},{"alias_kind":"pith_short_12","alias_value":"UHQ6H54YVVU6","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"UHQ6H54YVVU6R4WI","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"UHQ6H54Y","created_at":"2026-05-18T12:26:15Z"}],"graph_snapshots":[{"event_id":"sha256:33a904fd94b3a4ae230d6f6f67f5f43c39ee7abda9d222507d34055198ccdd84","target":"graph","created_at":"2026-05-18T04:32:35Z","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 aim of the Yakutsk array enhancement project is to create an instrument to study the highest-energy galactic cosmic rays (CRs) -- their sources, energy spectrum, and mass composition. Additionally, there will be unique capabilities for investigations in the transition region between galactic and extragalactic components of CRs. Using the well-developed imaging atmospheric Cherenkov telescope technique adapted to the energy region $E>10^{15}$ eV, we plan to measure the longitudinal structure parameters of the shower, e.g., angular and temporal distributions of the Cherenkov signal related t","authors_text":"A.A. Ivanov, I.Ye. Sleptsov, M.I. Pravdin, S.P. Knurenko, Z.E. Petrov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-11-17T07:40:15Z","title":"Enhancement of the Yakutsk array by atmospheric Cherenkov telescopes to study cosmic rays above $10^{15}$ eV"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.3902","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":"sha256:237686f7a249fc69ad98a2c6af72d7ebde211563d8609c93dae07bce1e4f0615","target":"record","created_at":"2026-05-18T04:32:35Z","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":"2ab7a7b116315a17e6e57d1f05a6deddb3b85b9f5f18d19075c9d33b0007baeb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-11-17T07:40:15Z","title_canon_sha256":"3a789dcbcfe0e7f639f6442ec5d50345da5441d4e28edb3a8cd407998e39b61c"},"schema_version":"1.0","source":{"id":"1011.3902","kind":"arxiv","version":2}},"canonical_sha256":"a1e1e3f798ad69e8f2c8805731512a96fbc9e990ed97c58c2c44c1f800f9cc5e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1e1e3f798ad69e8f2c8805731512a96fbc9e990ed97c58c2c44c1f800f9cc5e","first_computed_at":"2026-05-18T04:32:35.882467Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:32:35.882467Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r3puPyax9zJeNy+dPzEXj1UdwjE/Q9DcT2P6vzX/7TnoWP/lY4NCsHLw6dt4Ifi2ZkoVzjzxzZjPi3pD3xT6CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:32:35.882849Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.3902","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:237686f7a249fc69ad98a2c6af72d7ebde211563d8609c93dae07bce1e4f0615","sha256:33a904fd94b3a4ae230d6f6f67f5f43c39ee7abda9d222507d34055198ccdd84"],"state_sha256":"c3c339dca74d03c3386114bdf1ece40e774fec49642265b072f238d341102b47"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RYhNS1WYpyoXQ/1WyQX+Kusb6B81P9rM2LpQ8X8/jZBt1SPJ/i/SvXj7/yQHl77tW7Y6raQ1tLZ6fbOAqRF7AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T10:56:02.462132Z","bundle_sha256":"92751fb0be35fd551f011ff5348a6271a87b82a05246e7fe7dfc919349fb50ad"}}