{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:6DIZ7PEXLN7YT3IT5TR7RAQAYW","short_pith_number":"pith:6DIZ7PEX","canonical_record":{"source":{"id":"1804.04677","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2018-04-12T18:11:57Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"3a68f231f6e0e8660464c2c834f9d3e4cba2c78137e41132c94d482a857440d1","abstract_canon_sha256":"08170075e5557620b211da64e6e6c6c1e907ba42fc122ecf26a3adbfeb664b9f"},"schema_version":"1.0"},"canonical_sha256":"f0d19fbc975b7f89ed13ece3f88200c587f1adbf087313b434ab4a4bbcda37be","source":{"kind":"arxiv","id":"1804.04677","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.04677","created_at":"2026-05-18T00:18:35Z"},{"alias_kind":"arxiv_version","alias_value":"1804.04677v1","created_at":"2026-05-18T00:18:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.04677","created_at":"2026-05-18T00:18:35Z"},{"alias_kind":"pith_short_12","alias_value":"6DIZ7PEXLN7Y","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"6DIZ7PEXLN7YT3IT","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"6DIZ7PEX","created_at":"2026-05-18T12:32:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:6DIZ7PEXLN7YT3IT5TR7RAQAYW","target":"record","payload":{"canonical_record":{"source":{"id":"1804.04677","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2018-04-12T18:11:57Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"3a68f231f6e0e8660464c2c834f9d3e4cba2c78137e41132c94d482a857440d1","abstract_canon_sha256":"08170075e5557620b211da64e6e6c6c1e907ba42fc122ecf26a3adbfeb664b9f"},"schema_version":"1.0"},"canonical_sha256":"f0d19fbc975b7f89ed13ece3f88200c587f1adbf087313b434ab4a4bbcda37be","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:35.335761Z","signature_b64":"7DKzlDG+NHYvxQ4hCQA7FAJxKCg8efOlybWT9YnLNOZd6F06+rXK40r9IUXSuyPJwyuzb77lLzqXWDqzpiJ7CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f0d19fbc975b7f89ed13ece3f88200c587f1adbf087313b434ab4a4bbcda37be","last_reissued_at":"2026-05-18T00:18:35.335022Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:35.335022Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.04677","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":"2026-05-18T00:18:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CezFQHt4mYCLjJ0CAUaV2ouARqY1DLT08MvRu3n9lKB4OHPt6UBd1TZ0DcpVoNtv0vbfm6fM00pwnXMp+V1lDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T13:47:10.240777Z"},"content_sha256":"6fdbfb24502ba6bd24285fbe5514f4f6dadc61077f65f442d4ec884630f2f15c","schema_version":"1.0","event_id":"sha256:6fdbfb24502ba6bd24285fbe5514f4f6dadc61077f65f442d4ec884630f2f15c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:6DIZ7PEXLN7YT3IT5TR7RAQAYW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Italian contributions to cosmic-ray physics from Bruno Rossi to the G-Stack. A new window into the inexhaustible wealth of nature","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"physics.hist-ph","authors_text":"Giulio Peruzzi, Sofia Talas","submitted_at":"2018-04-12T18:11:57Z","abstract_excerpt":"From the late 1920s to the early 1950s, cosmic rays were the main instrument to investigate what we now call \"high-energy physics\". In approximately 25 years, an intense experimental and theoretical work brought particle physics from its childhood to its maturity. The data collected at that time played a crucial role in order to outline the quantum theories of fundamental interactions - electromagnetic, weak and strong - and they were an excellent training field for many young scientists. The knowledge acquired on cosmic rays constituted the basis of the extraordinary progresses that were to b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.04677","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":"2026-05-18T00:18:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EuT7Beew3S6PMuNIN2A6DSmubO0FC8oP7JQzu0aYuyLpsS6Ov5pE1Hr1+qIXG4oc1riCw04kSkwMQ203m/djAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T13:47:10.241122Z"},"content_sha256":"ae883fe503235989088145770849c4b2a788b73e1b2511b8cb51ec2536c45ba5","schema_version":"1.0","event_id":"sha256:ae883fe503235989088145770849c4b2a788b73e1b2511b8cb51ec2536c45ba5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6DIZ7PEXLN7YT3IT5TR7RAQAYW/bundle.json","state_url":"https://pith.science/pith/6DIZ7PEXLN7YT3IT5TR7RAQAYW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6DIZ7PEXLN7YT3IT5TR7RAQAYW/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":"2026-07-01T13:47:10Z","links":{"resolver":"https://pith.science/pith/6DIZ7PEXLN7YT3IT5TR7RAQAYW","bundle":"https://pith.science/pith/6DIZ7PEXLN7YT3IT5TR7RAQAYW/bundle.json","state":"https://pith.science/pith/6DIZ7PEXLN7YT3IT5TR7RAQAYW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6DIZ7PEXLN7YT3IT5TR7RAQAYW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:6DIZ7PEXLN7YT3IT5TR7RAQAYW","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":"08170075e5557620b211da64e6e6c6c1e907ba42fc122ecf26a3adbfeb664b9f","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2018-04-12T18:11:57Z","title_canon_sha256":"3a68f231f6e0e8660464c2c834f9d3e4cba2c78137e41132c94d482a857440d1"},"schema_version":"1.0","source":{"id":"1804.04677","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.04677","created_at":"2026-05-18T00:18:35Z"},{"alias_kind":"arxiv_version","alias_value":"1804.04677v1","created_at":"2026-05-18T00:18:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.04677","created_at":"2026-05-18T00:18:35Z"},{"alias_kind":"pith_short_12","alias_value":"6DIZ7PEXLN7Y","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"6DIZ7PEXLN7YT3IT","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"6DIZ7PEX","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:ae883fe503235989088145770849c4b2a788b73e1b2511b8cb51ec2536c45ba5","target":"graph","created_at":"2026-05-18T00:18:35Z","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":"From the late 1920s to the early 1950s, cosmic rays were the main instrument to investigate what we now call \"high-energy physics\". In approximately 25 years, an intense experimental and theoretical work brought particle physics from its childhood to its maturity. The data collected at that time played a crucial role in order to outline the quantum theories of fundamental interactions - electromagnetic, weak and strong - and they were an excellent training field for many young scientists. The knowledge acquired on cosmic rays constituted the basis of the extraordinary progresses that were to b","authors_text":"Giulio Peruzzi, Sofia Talas","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2018-04-12T18:11:57Z","title":"The Italian contributions to cosmic-ray physics from Bruno Rossi to the G-Stack. A new window into the inexhaustible wealth of nature"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.04677","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":"sha256:6fdbfb24502ba6bd24285fbe5514f4f6dadc61077f65f442d4ec884630f2f15c","target":"record","created_at":"2026-05-18T00:18:35Z","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":"08170075e5557620b211da64e6e6c6c1e907ba42fc122ecf26a3adbfeb664b9f","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2018-04-12T18:11:57Z","title_canon_sha256":"3a68f231f6e0e8660464c2c834f9d3e4cba2c78137e41132c94d482a857440d1"},"schema_version":"1.0","source":{"id":"1804.04677","kind":"arxiv","version":1}},"canonical_sha256":"f0d19fbc975b7f89ed13ece3f88200c587f1adbf087313b434ab4a4bbcda37be","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f0d19fbc975b7f89ed13ece3f88200c587f1adbf087313b434ab4a4bbcda37be","first_computed_at":"2026-05-18T00:18:35.335022Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:35.335022Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7DKzlDG+NHYvxQ4hCQA7FAJxKCg8efOlybWT9YnLNOZd6F06+rXK40r9IUXSuyPJwyuzb77lLzqXWDqzpiJ7CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:35.335761Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.04677","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6fdbfb24502ba6bd24285fbe5514f4f6dadc61077f65f442d4ec884630f2f15c","sha256:ae883fe503235989088145770849c4b2a788b73e1b2511b8cb51ec2536c45ba5"],"state_sha256":"f6d6214219a5c396a3f854a4cc2b35daed59d8ce2d6c60f30407eb1f3e4e7f97"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2fZxf72rgman7bVT1WDgtpWkshEAEPnOFWQcVBK0/ekVY9sX1PjbLEJ1vLe2NtVMKuHVaw7gp4Sp0Cp3XQW2BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-01T13:47:10.243106Z","bundle_sha256":"eeca9ef0f4d3c1d357411cc07078c54bda0932c2e65d0037d62ffcae13f19d0f"}}