{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:KQG2W5MKLHYSHTXC4S3NL5HTSS","short_pith_number":"pith:KQG2W5MK","canonical_record":{"source":{"id":"0910.4187","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-21T23:44:44Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"d3cf5082752eb9abcff21c9d6713d0521d97b7250bbc800f2b56a903de3cccb9","abstract_canon_sha256":"26f2d0a9437aeb8fc8b940014f0a8e563b888fc2d7623d6cf6d98a0178c80126"},"schema_version":"1.0"},"canonical_sha256":"540dab758a59f123cee2e4b6d5f4f3949f6bc9749e09479525ebb106ddec74e9","source":{"kind":"arxiv","id":"0910.4187","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4187","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4187v1","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4187","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"pith_short_12","alias_value":"KQG2W5MKLHYS","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"KQG2W5MKLHYSHTXC","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"KQG2W5MK","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:KQG2W5MKLHYSHTXC4S3NL5HTSS","target":"record","payload":{"canonical_record":{"source":{"id":"0910.4187","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-21T23:44:44Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"d3cf5082752eb9abcff21c9d6713d0521d97b7250bbc800f2b56a903de3cccb9","abstract_canon_sha256":"26f2d0a9437aeb8fc8b940014f0a8e563b888fc2d7623d6cf6d98a0178c80126"},"schema_version":"1.0"},"canonical_sha256":"540dab758a59f123cee2e4b6d5f4f3949f6bc9749e09479525ebb106ddec74e9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:13.035562Z","signature_b64":"qLik4Dv1Aa3DrOeWXTugMlyIoO65lOG6bAZuXcZH8KL/vNfvhXlXZxOWOumF4iwI5WhUATXeicXNm644Vmp/Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"540dab758a59f123cee2e4b6d5f4f3949f6bc9749e09479525ebb106ddec74e9","last_reissued_at":"2026-05-18T02:11:13.034627Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:13.034627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.4187","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":"2026-05-18T02:11:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xtW5YuwtZOh3SSdtwfXdSVfpi1MZuJryKUVbtjQ6X4JmXpRqBjQXK+fF6V6Xbx8QBSgJrt1EMETGYwzH8L58AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T07:40:04.152780Z"},"content_sha256":"f7088f6bc11ad700d6c270a30878c2038f435f7706dae7e214ebacfa48f68423","schema_version":"1.0","event_id":"sha256:f7088f6bc11ad700d6c270a30878c2038f435f7706dae7e214ebacfa48f68423"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:KQG2W5MKLHYSHTXC4S3NL5HTSS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Jem-Euso Mission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.HE","authors_text":"The JEM-EUSO Collaboration, Yoshiyuki Takahashi","submitted_at":"2009-10-21T23:44:44Z","abstract_excerpt":"JEM-EUSO is a space science mission to explore extreme energies and physics of the Universe. Its instrument will watch the dark-side of the earth and will detect UV photons emitted from the extensive air shower caused by an Ultra-High Energy Cosmic Rays (UHECRs above 10^18 eV), or Extremely High Energy Cosmic Ray (EHECR) particle (e.g., above about 10^20 eV). Such a high-rigidity particles as the latter arrives almost in a straight-line from its origin through the magnetic fields of our Milky Way Galaxy and is expected to allow us to trace the source location by its arrival direction. This nat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4187","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":"2026-05-18T02:11:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yhsjw6oSQM3K/NyMrO3OGFjCHnZunNfTdhmPRU5/AkUKWpd85NP0yJMbNH36j8X0lUKd5OwQ6Jp6CotlSKKWCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T07:40:04.153133Z"},"content_sha256":"8003ed683b6f79346b4303bbd161016cefa2e2cb9343a29718fbc1710a3cc14d","schema_version":"1.0","event_id":"sha256:8003ed683b6f79346b4303bbd161016cefa2e2cb9343a29718fbc1710a3cc14d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KQG2W5MKLHYSHTXC4S3NL5HTSS/bundle.json","state_url":"https://pith.science/pith/KQG2W5MKLHYSHTXC4S3NL5HTSS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KQG2W5MKLHYSHTXC4S3NL5HTSS/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":"2026-06-27T07:40:04Z","links":{"resolver":"https://pith.science/pith/KQG2W5MKLHYSHTXC4S3NL5HTSS","bundle":"https://pith.science/pith/KQG2W5MKLHYSHTXC4S3NL5HTSS/bundle.json","state":"https://pith.science/pith/KQG2W5MKLHYSHTXC4S3NL5HTSS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KQG2W5MKLHYSHTXC4S3NL5HTSS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:KQG2W5MKLHYSHTXC4S3NL5HTSS","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":"26f2d0a9437aeb8fc8b940014f0a8e563b888fc2d7623d6cf6d98a0178c80126","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-21T23:44:44Z","title_canon_sha256":"d3cf5082752eb9abcff21c9d6713d0521d97b7250bbc800f2b56a903de3cccb9"},"schema_version":"1.0","source":{"id":"0910.4187","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4187","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4187v1","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4187","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"pith_short_12","alias_value":"KQG2W5MKLHYS","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"KQG2W5MKLHYSHTXC","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"KQG2W5MK","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:8003ed683b6f79346b4303bbd161016cefa2e2cb9343a29718fbc1710a3cc14d","target":"graph","created_at":"2026-05-18T02:11:13Z","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":"JEM-EUSO is a space science mission to explore extreme energies and physics of the Universe. Its instrument will watch the dark-side of the earth and will detect UV photons emitted from the extensive air shower caused by an Ultra-High Energy Cosmic Rays (UHECRs above 10^18 eV), or Extremely High Energy Cosmic Ray (EHECR) particle (e.g., above about 10^20 eV). Such a high-rigidity particles as the latter arrives almost in a straight-line from its origin through the magnetic fields of our Milky Way Galaxy and is expected to allow us to trace the source location by its arrival direction. This nat","authors_text":"The JEM-EUSO Collaboration, Yoshiyuki Takahashi","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-21T23:44:44Z","title":"The Jem-Euso Mission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4187","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:f7088f6bc11ad700d6c270a30878c2038f435f7706dae7e214ebacfa48f68423","target":"record","created_at":"2026-05-18T02:11:13Z","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":"26f2d0a9437aeb8fc8b940014f0a8e563b888fc2d7623d6cf6d98a0178c80126","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-21T23:44:44Z","title_canon_sha256":"d3cf5082752eb9abcff21c9d6713d0521d97b7250bbc800f2b56a903de3cccb9"},"schema_version":"1.0","source":{"id":"0910.4187","kind":"arxiv","version":1}},"canonical_sha256":"540dab758a59f123cee2e4b6d5f4f3949f6bc9749e09479525ebb106ddec74e9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"540dab758a59f123cee2e4b6d5f4f3949f6bc9749e09479525ebb106ddec74e9","first_computed_at":"2026-05-18T02:11:13.034627Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:11:13.034627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qLik4Dv1Aa3DrOeWXTugMlyIoO65lOG6bAZuXcZH8KL/vNfvhXlXZxOWOumF4iwI5WhUATXeicXNm644Vmp/Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T02:11:13.035562Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.4187","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f7088f6bc11ad700d6c270a30878c2038f435f7706dae7e214ebacfa48f68423","sha256:8003ed683b6f79346b4303bbd161016cefa2e2cb9343a29718fbc1710a3cc14d"],"state_sha256":"c3c5864a1883c59d4845a5a1ef0b71f0723d83d1796444009842f37dd55e42bd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4bY37lpsv1xa2CQoS8uDYJ3kTwOrxzjRI9qF/CzCpt9c464g+pvtMM/43troGYvlYLMG1Zn9cKIEYc+7Uz2gDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T07:40:04.155025Z","bundle_sha256":"a169f4bf9159b479bd0a73720cf0fe0b25e9f510b728075e9f11ed0fa75953bf"}}