{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:N3RTPJVY7MM5GIXQUB2LWDINF3","short_pith_number":"pith:N3RTPJVY","canonical_record":{"source":{"id":"0910.4843","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-26T10:00:30Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"9c5e9804d5e2365c6fc2d7988e409e877607025e99a326cc7137618e32ab47a9","abstract_canon_sha256":"8c91ed7019429477cdefa07931d532fab9eaa0b54490964897a195868171c19d"},"schema_version":"1.0"},"canonical_sha256":"6ee337a6b8fb19d322f0a074bb0d0d2efd43b5050abafd321eac9933232e2460","source":{"kind":"arxiv","id":"0910.4843","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4843","created_at":"2026-05-18T03:48:02Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4843v1","created_at":"2026-05-18T03:48:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4843","created_at":"2026-05-18T03:48:02Z"},{"alias_kind":"pith_short_12","alias_value":"N3RTPJVY7MM5","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"N3RTPJVY7MM5GIXQ","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"N3RTPJVY","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:N3RTPJVY7MM5GIXQUB2LWDINF3","target":"record","payload":{"canonical_record":{"source":{"id":"0910.4843","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-26T10:00:30Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"9c5e9804d5e2365c6fc2d7988e409e877607025e99a326cc7137618e32ab47a9","abstract_canon_sha256":"8c91ed7019429477cdefa07931d532fab9eaa0b54490964897a195868171c19d"},"schema_version":"1.0"},"canonical_sha256":"6ee337a6b8fb19d322f0a074bb0d0d2efd43b5050abafd321eac9933232e2460","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:48:02.143849Z","signature_b64":"+K/p8dCPtznDDubcTM2gounxbjM1hDGrY2DSyo3hAEubQz8+ZDnllpKbA9tVVsSJA2WPDx1xEqBlKsf+WHzRBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6ee337a6b8fb19d322f0a074bb0d0d2efd43b5050abafd321eac9933232e2460","last_reissued_at":"2026-05-18T03:48:02.143441Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:48:02.143441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.4843","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":"2026-05-18T03:48:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"53Wu6FsDcbPKbdYtP+zo1tG4AK0F01Idqwet757Ft0mBq/c09QnmTB6+2MCB/0088AtvwAsv3wnCs0PUWQcFCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:20:40.019539Z"},"content_sha256":"225ccd55378ba10a306cad996f5b09683a4de2f9a36c40b9241670062544b3aa","schema_version":"1.0","event_id":"sha256:225ccd55378ba10a306cad996f5b09683a4de2f9a36c40b9241670062544b3aa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:N3RTPJVY7MM5GIXQUB2LWDINF3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement of the atmospheric muon flux with a 4 GeV threshold in the ANTARES neutrino telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.HE","authors_text":"ANTARES Collaboration","submitted_at":"2009-10-26T10:00:30Z","abstract_excerpt":"A new method for the measurement of the muon flux in the deep-sea ANTARES neutrino telescope and its dependence on the depth is presented. The method is based on the observation of coincidence signals in adjacent storeys of the detector. This yields an energy threshold of about 4 GeV. The main sources of optical background are the decay of 40K and the bioluminescence in the sea water. The 40K background is used to calibrate the efficiency of the photo-multiplier tubes."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4843","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":"2026-05-18T03:48:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x8GxvdKgaLO7YfXweio+YleaDKLhAfIrFCEBKyUOIbxq94XqoS4ehzbhYz9ywWMXiRXfxHlT3iNzNPyrlzsjCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:20:40.020430Z"},"content_sha256":"6f59fd46d62bea035ade93e68ecaf6b6a8604401dc20bcbe244adce2100d8b53","schema_version":"1.0","event_id":"sha256:6f59fd46d62bea035ade93e68ecaf6b6a8604401dc20bcbe244adce2100d8b53"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/N3RTPJVY7MM5GIXQUB2LWDINF3/bundle.json","state_url":"https://pith.science/pith/N3RTPJVY7MM5GIXQUB2LWDINF3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/N3RTPJVY7MM5GIXQUB2LWDINF3/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":"2026-05-31T21:20:40Z","links":{"resolver":"https://pith.science/pith/N3RTPJVY7MM5GIXQUB2LWDINF3","bundle":"https://pith.science/pith/N3RTPJVY7MM5GIXQUB2LWDINF3/bundle.json","state":"https://pith.science/pith/N3RTPJVY7MM5GIXQUB2LWDINF3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/N3RTPJVY7MM5GIXQUB2LWDINF3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:N3RTPJVY7MM5GIXQUB2LWDINF3","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":"8c91ed7019429477cdefa07931d532fab9eaa0b54490964897a195868171c19d","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-26T10:00:30Z","title_canon_sha256":"9c5e9804d5e2365c6fc2d7988e409e877607025e99a326cc7137618e32ab47a9"},"schema_version":"1.0","source":{"id":"0910.4843","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4843","created_at":"2026-05-18T03:48:02Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4843v1","created_at":"2026-05-18T03:48:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4843","created_at":"2026-05-18T03:48:02Z"},{"alias_kind":"pith_short_12","alias_value":"N3RTPJVY7MM5","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"N3RTPJVY7MM5GIXQ","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"N3RTPJVY","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:6f59fd46d62bea035ade93e68ecaf6b6a8604401dc20bcbe244adce2100d8b53","target":"graph","created_at":"2026-05-18T03:48:02Z","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":"A new method for the measurement of the muon flux in the deep-sea ANTARES neutrino telescope and its dependence on the depth is presented. The method is based on the observation of coincidence signals in adjacent storeys of the detector. This yields an energy threshold of about 4 GeV. The main sources of optical background are the decay of 40K and the bioluminescence in the sea water. The 40K background is used to calibrate the efficiency of the photo-multiplier tubes.","authors_text":"ANTARES Collaboration","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-26T10:00:30Z","title":"Measurement of the atmospheric muon flux with a 4 GeV threshold in the ANTARES neutrino telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4843","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":"sha256:225ccd55378ba10a306cad996f5b09683a4de2f9a36c40b9241670062544b3aa","target":"record","created_at":"2026-05-18T03:48:02Z","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":"8c91ed7019429477cdefa07931d532fab9eaa0b54490964897a195868171c19d","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-26T10:00:30Z","title_canon_sha256":"9c5e9804d5e2365c6fc2d7988e409e877607025e99a326cc7137618e32ab47a9"},"schema_version":"1.0","source":{"id":"0910.4843","kind":"arxiv","version":1}},"canonical_sha256":"6ee337a6b8fb19d322f0a074bb0d0d2efd43b5050abafd321eac9933232e2460","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6ee337a6b8fb19d322f0a074bb0d0d2efd43b5050abafd321eac9933232e2460","first_computed_at":"2026-05-18T03:48:02.143441Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:48:02.143441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+K/p8dCPtznDDubcTM2gounxbjM1hDGrY2DSyo3hAEubQz8+ZDnllpKbA9tVVsSJA2WPDx1xEqBlKsf+WHzRBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:48:02.143849Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.4843","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:225ccd55378ba10a306cad996f5b09683a4de2f9a36c40b9241670062544b3aa","sha256:6f59fd46d62bea035ade93e68ecaf6b6a8604401dc20bcbe244adce2100d8b53"],"state_sha256":"1351abebf04fb6e9cc9dcee665582f3e2933c535d3cc14704ba19233bb5dcfb3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/NTNXmPap3mChszA16r6+j/b5FH8yf8ndrMbJqPkLPSPkKh4teL90gwvenSArXd/R9BKFNLAI0rwPAV6x0mFBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T21:20:40.025217Z","bundle_sha256":"70ec468fb54c3cb5cc7b7f69fe1a6e6928e0f2796e10702b5435effa044c444d"}}