{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:3YR7AEC5LX5RYD5MWBLGM43QWE","short_pith_number":"pith:3YR7AEC5","canonical_record":{"source":{"id":"1410.5267","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-10-20T13:31:10Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"98187e44c44fd7b9d60c92d4d54915b6ea7ef569e7cbc7a9d631a5238cabded9","abstract_canon_sha256":"768ebfcb4f38091ebf9c65f7ea550ceff4a746c06a0068352cde97daf7b3177c"},"schema_version":"1.0"},"canonical_sha256":"de23f0105d5dfb1c0facb056667370b135843cb4b4b8442a25313ed46d554f10","source":{"kind":"arxiv","id":"1410.5267","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.5267","created_at":"2026-05-18T02:39:39Z"},{"alias_kind":"arxiv_version","alias_value":"1410.5267v1","created_at":"2026-05-18T02:39:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.5267","created_at":"2026-05-18T02:39:39Z"},{"alias_kind":"pith_short_12","alias_value":"3YR7AEC5LX5R","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"3YR7AEC5LX5RYD5M","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"3YR7AEC5","created_at":"2026-05-18T12:28:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:3YR7AEC5LX5RYD5MWBLGM43QWE","target":"record","payload":{"canonical_record":{"source":{"id":"1410.5267","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-10-20T13:31:10Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"98187e44c44fd7b9d60c92d4d54915b6ea7ef569e7cbc7a9d631a5238cabded9","abstract_canon_sha256":"768ebfcb4f38091ebf9c65f7ea550ceff4a746c06a0068352cde97daf7b3177c"},"schema_version":"1.0"},"canonical_sha256":"de23f0105d5dfb1c0facb056667370b135843cb4b4b8442a25313ed46d554f10","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:39:39.864802Z","signature_b64":"OExW2rrInNXHdAXaGtM0GglpXPF8FhT4yeTpewrMHsuUz/SHcomRpuZwFf8JSOSY/S2bm/z5Za9DjJ5lpsahAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"de23f0105d5dfb1c0facb056667370b135843cb4b4b8442a25313ed46d554f10","last_reissued_at":"2026-05-18T02:39:39.864227Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:39:39.864227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1410.5267","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":"2026-05-18T02:39:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kw/WWwv6Pjri/JWn62INNf1N6oU38xYrIIEf1SQne7QVmqlgsHxZH86IuKI2ysR1GZkNuGpxk4fuYzPte0+gAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:47:10.000441Z"},"content_sha256":"95231b944269795b0add44a9a902af900a29fb378e5d91cac248c67b3367a95a","schema_version":"1.0","event_id":"sha256:95231b944269795b0add44a9a902af900a29fb378e5d91cac248c67b3367a95a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:3YR7AEC5LX5RYD5MWBLGM43QWE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Drilling deep in South Pole Ice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"physics.ins-det","authors_text":"Rolf Nahnhauer, Timo Karg","submitted_at":"2014-10-20T13:31:10Z","abstract_excerpt":"To detect the tiny flux of ultra-high energy neutrinos from active galactic nuclei or from interactions of highest energy cosmic rays with the microwave background photons needs target masses of the order of several hundred cubic kilometers. Clear Antarctic ice has been discussed as a favorable material for hybrid detection of optical, radio and acoustic signals from ultra-high energy neutrino interactions. To apply these technologies at the adequate scale hundreds of holes have to be drilled in the ice down to depths of about 2500 m to deploy the corresponding sensors. To do this on a reasona"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.5267","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":"2026-05-18T02:39:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"93r8xjs/oTaw4dOZmU356xf8a2Zw8ASo2z8vj752nmA08tT7aaIF+ryI6HIofwg817Q8Cz3T1wRg3gUXbjwJCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:47:10.001106Z"},"content_sha256":"c01b1f98c254b60d5ed0d5be499a16ae545661fec250da4489eced4802319b60","schema_version":"1.0","event_id":"sha256:c01b1f98c254b60d5ed0d5be499a16ae545661fec250da4489eced4802319b60"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3YR7AEC5LX5RYD5MWBLGM43QWE/bundle.json","state_url":"https://pith.science/pith/3YR7AEC5LX5RYD5MWBLGM43QWE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3YR7AEC5LX5RYD5MWBLGM43QWE/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":"2026-06-05T01:47:10Z","links":{"resolver":"https://pith.science/pith/3YR7AEC5LX5RYD5MWBLGM43QWE","bundle":"https://pith.science/pith/3YR7AEC5LX5RYD5MWBLGM43QWE/bundle.json","state":"https://pith.science/pith/3YR7AEC5LX5RYD5MWBLGM43QWE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3YR7AEC5LX5RYD5MWBLGM43QWE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:3YR7AEC5LX5RYD5MWBLGM43QWE","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":"768ebfcb4f38091ebf9c65f7ea550ceff4a746c06a0068352cde97daf7b3177c","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-10-20T13:31:10Z","title_canon_sha256":"98187e44c44fd7b9d60c92d4d54915b6ea7ef569e7cbc7a9d631a5238cabded9"},"schema_version":"1.0","source":{"id":"1410.5267","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.5267","created_at":"2026-05-18T02:39:39Z"},{"alias_kind":"arxiv_version","alias_value":"1410.5267v1","created_at":"2026-05-18T02:39:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.5267","created_at":"2026-05-18T02:39:39Z"},{"alias_kind":"pith_short_12","alias_value":"3YR7AEC5LX5R","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"3YR7AEC5LX5RYD5M","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"3YR7AEC5","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:c01b1f98c254b60d5ed0d5be499a16ae545661fec250da4489eced4802319b60","target":"graph","created_at":"2026-05-18T02:39:39Z","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":"To detect the tiny flux of ultra-high energy neutrinos from active galactic nuclei or from interactions of highest energy cosmic rays with the microwave background photons needs target masses of the order of several hundred cubic kilometers. Clear Antarctic ice has been discussed as a favorable material for hybrid detection of optical, radio and acoustic signals from ultra-high energy neutrino interactions. To apply these technologies at the adequate scale hundreds of holes have to be drilled in the ice down to depths of about 2500 m to deploy the corresponding sensors. To do this on a reasona","authors_text":"Rolf Nahnhauer, Timo Karg","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-10-20T13:31:10Z","title":"Drilling deep in South Pole Ice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.5267","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":"sha256:95231b944269795b0add44a9a902af900a29fb378e5d91cac248c67b3367a95a","target":"record","created_at":"2026-05-18T02:39:39Z","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":"768ebfcb4f38091ebf9c65f7ea550ceff4a746c06a0068352cde97daf7b3177c","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-10-20T13:31:10Z","title_canon_sha256":"98187e44c44fd7b9d60c92d4d54915b6ea7ef569e7cbc7a9d631a5238cabded9"},"schema_version":"1.0","source":{"id":"1410.5267","kind":"arxiv","version":1}},"canonical_sha256":"de23f0105d5dfb1c0facb056667370b135843cb4b4b8442a25313ed46d554f10","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"de23f0105d5dfb1c0facb056667370b135843cb4b4b8442a25313ed46d554f10","first_computed_at":"2026-05-18T02:39:39.864227Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:39:39.864227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OExW2rrInNXHdAXaGtM0GglpXPF8FhT4yeTpewrMHsuUz/SHcomRpuZwFf8JSOSY/S2bm/z5Za9DjJ5lpsahAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:39:39.864802Z","signed_message":"canonical_sha256_bytes"},"source_id":"1410.5267","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:95231b944269795b0add44a9a902af900a29fb378e5d91cac248c67b3367a95a","sha256:c01b1f98c254b60d5ed0d5be499a16ae545661fec250da4489eced4802319b60"],"state_sha256":"e8c01f7e8e852485764a1c24c435b35e3875fc6a9281a273a2e193f01b030227"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iyT1+2xUFkrLnkGPOYbBpBBBp5KogRU3t7o7Deel0BaTEiTmpvBHRm2U+a1zjl00TK3tlJ67QzB8OTFqIJErCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T01:47:10.004260Z","bundle_sha256":"ff7bfe576e865de038430b479eb76e8c13e6e33cf229da367fc1d2df9e07d2bd"}}